Metal Casting Zone Info Blog

Archive for October, 2010

Making sand cores for a greensand mould using Sodium Silicate and CO2 to harden the sand.

How about the cast iron & pig iron prices in China

As a metal foundry in China, we always keep our eyes on the updated pig iron prices. At the same time, we also provided the updated cast iron prices on Dandong Foundry’s website. In this way, our clients and visitors can learn about the latest prices about grey iron casting, ductile iron casting and pig iron in China.

As for the pig iron prices, we got them from those websites we often used. We have compared their prices with our purchased prices. So, these prices are accurate and representative.

As for the cast iron prices, we have quoted them by gray iron castings by green sand casting process and resin sand casting process. And likewise for the ductile iron castings.

However, you must know that these prices are just average prices, which are just for your reference. There are many factors will affect the prices of iron castings. Such as the unit weight, the annual demand, the structure complexity, material requirements, surface and inside requirements, dimensional requirements etc. So, if you need accurate quotations, you should contact the manufacturers and send the drawings and requirements to them. The incautious inquiry and quotations will affect the both profits for the buyer and seller.

What is the relations between cast iron and pig iron?

There are direct relations between them. In other words, if the pig iron rises 100 USD/ton, then the cast iron prices will rises 100 USD/ton too. Therefore, pig iron prices will largely affect the iron casting prices.

By the way, the different degrees for the gray iron and ductile iron will also affect their prices. The higher degrees will require higher costs. As for the gray iron, the GG 15, GG20, GG25 should have similar prices, but the GG30 and GG35 should have higher prices. As for the ductile iron, the GGG50 should have higher price than GGG40. The GGG60 and GGG70, GGG80 will have more higher prices. Why? The higher degrees will require higher requirement and technical capability. Moreover, the higher degrees will mean the difficulty to recycle the materials. In other words, as for the GG20 materials, we can reuse their casting head (gate and feed) to make GG20 again. Since we make GG20 materials everyday, so the inferior products can be our raw materials again. However, the higher degree materials have to wait for making the same materials again.

For the updated cast iron & pig iron prices, please check Dandong Foundry.

Basics of cleaning and maintenance of cast iron cookware. I will post several videos on seasoning, removing rust, ect… This is just the basics on how to keep your cast iron looking good and well seasoned. At the end of the video, it cut-off at “What is seasoning” – This is a message I sent to fellow YouTuber, MinhSaChau, explaining the term: When a cast iron pan is completely bare – with no oil or anything on it – It will be gray in color, like gun metal. When it is in this unprotected state, any small amout of moisture, humidity or water will cause it to rust… and rust rather quickly. “Seasoning” means that layers of oil have been allowed to bond to the metal. The more layers of oil, the better the bond is… This is what seasoning is… The more you cook with your pans, the more of these layers of oil/coating will build-up and protect that gray metal. A pan that is well seasoned will be very black and smooth in color. It will be as good or better than teflon-coating as far as non-stick performance. : ) I have another video that will help show this – what seasoning and non-stick performance of even just a little seasoning can do.
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Ductile Iron Application

The scope of ductile iron application can be divided into four fields: First, pressure pipes and fittings. Second, the automobile industry. Third, agriculture, road and construction applications. Fourth, general engineering.

1. Pressure pipes and fittings

Ductile iron pipe has been used to transport water and other liquids, which testifies to the ball better than gray cast iron pipe. Because cast iron has excellent strength and toughness. These physical characteristics make the pipeline withstand the high operating pressure, and can withstand the excavation near pipelines and municipal construction and transportation requirements.

2. Automotive applications

The automotive industry is the second largest ductile iron casting application fields. Ductile iron has been used in cars in the three main areas: first, the car engine parts, second, gears and bushings, third, suspension, brakes and steering. Almost all crankshafts of the Ford Motor Company have been manufactured by ductile iron. Most of the worldwide cars are fitted with ductile iron crankshaft, instead of forged steel crankshaft.

3. Agriculture, road and construction applications

Modern agriculture requires a reliable and long service life of agricultural machinery. The entire agricultural industry are widely using ductile iron castings including tractor parts, plows, brackets, clamps and pulleys. For other types of agricultural machinery including bulldozers, moved into machines, cranes and compressors, ductile iron castings in these areas have a very wide range of applications.

4. General engineering applications

The machine tool industry is using the excellent engineering performance of the ductile iron to design complex machine parts. Ductile iron has high tensile strength and yield strength, and good mechanical processing properties, thus allowing production of lighter castings to keep a good rigidity. Similarly, the strength and toughness of ductile iron has made it to be widely used in all kinds of hand tools such as wrenches, clamps and gauges etc.

Paper manufacturing industry is using the high strength and high elastic modulus of ductile iron. These properties can reduce the weight of the pressure drum and drying drum.

Therefore, ductile iron castings have been widely used in many industrial areas worldwide. With the continuous development of metal founding, the application of ductile iron must be wider in the future.

This article was from Dandong Foundry Blog.

Do you ever mind how ductile pipes are made which we often see them in underground drainage’s. Watch this video.
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Fireplace Screens and Accessories

Fireplace Screens and Tools

Your fireplace can indeed bring years of enjoyment, but you should have the proper tools to make the fire building process as simple and easy as possible. Just like a lot of things we really enjoy, fireplaces take effort and time to keep working effectively and available for use whenever we like. Quality is indeed in the details, as noted at http://www.fireplacescreensetc.com, so be sure your hearth is ready. Here are certain fireplace supplies to keep in mind as you’re shopping for your fireplace hearth.

Wood baskets make terrific fireplace accessories and can be both stylish and convenient. You’ll find that these hearth accessories are made to go with other fireplace accessories like your tools and screen. If you get an accentuating basket, you will both complement the hearth decor while at the same time keep wood close by for those nights when you don’t want to run outdoors for it from storage. You will want to purchase a log carrier that will transport logs from the exterior rack to the basket by the fireplace. A carrier allows you to not only carry more wood to the house, but it can also keep your floors and clothes cleaner.

Fireplace screens, like any accessory for your hearth, must first be the correct size for your individual fireplace. Next, they should accentuate other fireplace accessories or you’ll just be filling the area with mismatching items that will detract from the feel and look of the space. You should keep in mind purely decorative glass firescreens do not prevent sparks from damaging your floor, and they will be destroyed if you place them in front of a roaring fire. So, always consider how you plan on using the screen then begin shopping for the screen that best suits your preferences, budget, and decor.

Today, andirons are generally used for decorative reasons to improve the look of your hearth, but they also might be used for practical purposes instead of fireplace grates. Solid Brass Andirons stand straight-up and always have some type of shank running perpendicular that can raise logs off the hearth floor. This special fireplace accessory may have either short or long shanks. A shank that is longer holds more firewood so you can build a bigger fire. Most of these wood holding accessories are specifically designed to add to or improve the decor of your existing hearth. For instance, two cat andirons may display eyes that reflect and light up while a fire is going in the fireplace producing a radiant effect that adds personality to the decor.

For a fire to function properly, it’s got to be able to breathe. A fire will receive the bulk of its oxygen from below, which is a reason for having a fireplace grate or perhaps an andiron. A fireplace grate will bring the logs off of the bottom of the hearth to help the fire breathe and keep on burning. The size of your grate will depend upon how large the fireplace opening is. Some grates are designed for more firewood but usually they will allow between 5-6 medium-sized logs to sit inside. You’ll want the length of the grate to be at least 4-6 inches short of the size of the hearth opening so the oxygen can properly feed the fire.

Fireplace hearth tools should have at least a poker, shovel, and a broom. You will need to keep your hearth area clean because the ash will smother fires making it really difficult to keep a good flame alive. The purpose of the poker is to move logs about so that the wood burns more evenly. If you don’t have these essential tools, you won’t be able to competently maintain or handle a fire.

Fireplace firebacks started in Europe and later were brought to the Americas during the Colonial period and are again gaining popularity for both their aesthetic appeal as well as functional use. Cast iron firebacks are fixed inside the fireplace toward it’s backwall. Their purpose is to trap the heat as well as conserve the backwall. Instead of permitting a greater part of the heat to escape up the chimney the firebacks absorb the heat. Then, for hours after the fire has died out, a fireback will continue to circulate heat throughout the space.

While there are several details that must be considered as you operate a fireplace, in reality the hearth will likely bring you more joy than any fixture in your house. Just make sure you always use a grate or andirons to elevate wood from the floor and to keep the space clean by using your fireplace accessories and tools. Avoid flying sparks by using a fireplace screen and always remember, a clean hearth is a happy hearth!

Author’s Bio

Pamela Tice currently owns numerous niche home decor stores. You may find more on andirons along with how to build a perfect fire by searching Fireplacescreensetc.com. now.

Just a few examples of the fantastic range of Firebacks available, including cast iron firebacks for open fires available at The FireBack Company www.thefirebackcompany.co.uk. Sizes go from up to 16″ all the way through to over 30″.
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Ductile iron pipe

Dimensions

Ductile iron pipe is sized according to a dimensionless term known as the Pipe Size or Nominal Diameter (known by its French abbreviation, DN). This is roughly equivalent to the pipe’s internal diameter in inches or millimeters. However, it is the external diameter of the pipe that is kept constant between changes in wall thickness, in order to maintain compatibility in joints and fittings, and consequently the internal diameter does vary, sometimes significantly, from its nominal size. Nominal pipe sizes vary from 3 inches up to 64 inches, in increments of at least 1 inch, in the USA.

Pipe dimensions are standardised to the mutually incompatible AWWA C151 (U.S. Customary Units) in the USA, ISO 2531 / EN 545/598 (metric) in Europe, and AS/NZS 2280 (metric) in Australia and New Zealand. Although both metric, European and Australian are not compatible and pipes of identical nominal diameters have quite different dimensions.

North America

Pipe dimensions according to the American AWWA C-151

Pipe Size

Outside Diameter (in)

3

3.96

4

4.80

6

6.90

8

9.05

10

11.10

12

13.20

14

15.30

16

17.40

18

19.50

20

21.60

24

25.80

30

32.00

Europe

European pipe is standardized to ISO 2531 and its descendent specifications EN 545 (potable water) and EN 598 (sewage). European pipes are sized to approximately match the internal diameter of the pipe, following internal lining, to the nominal diameter. ISO 2531 maintains dimensional compatibility with older German cast iron pipes. Older British pipes, however, which used the incompatible imperial standard, BS 78, require adapter pieces when connecting to newly installed pipe. Coincidentally, the British harmonization with European pipe standards occurred at approximately the same time as its transition to ductile iron, so almost all cast iron pipe is imperial, and all ductile pipe, metric.

DN

Outside Diameter (mm)

Wall thickness (mm)

Class 40

K9

K10

40

56

4.8

6.0

6.0

50

66

4.8

6.0

6.0

60

77

4.8

6.0

6.0

65

82

4.8

6.0

6.0

80

98

4.8

6.0

6.0

100

118

4.8

6.0

6.0

125

144

4.8

6.0

6.0

150

170

5.0

6.0

6.5

200

222

5.4

6.3

7.0

250

274

5.8

6.8

7.5

300

326

6.2

7.2

8.0

350

378

7.0

7.7

8.5

400

429

7.8

8.1

9.0

450

480

-

8.6

9.5

500

532

-

9.0

10.0

600

635

-

9.9

11.0

700

738

-

10.8

12.0

800

842

-

11.7

13.0

900

945

-

12.6

14.0

1000

1048

-

13.5

15.0

1100

1152

-

14.4

16.0

1200

1255

-

15.3

17.0

1400

1462

-

17.1

19.0

1500

1565

-

18.0

20.0

1600

1668

-

18.9

21.0

1800

1875

-

20.7

23.0

2000

2082

-

22.5

25.0

Australia

Australian and New Zealand pipes are sized to an independent specification, AS/NZS 2280, that while adopting the nomenclature of European standards, is not compatible. Australia adopted at an early point the imperial British cast iron pipe standard BS 78, and when this was retired on British adoption of ISO 2531, rather than similarly harmonizing with Europe, Australia opted for a ‘soft’ conversion from imperial units to metric, published as AS/NSZ 2280, with the physical outer diameters remaining unchanged, allowing continuity of manufacture and backwards compatibility. A result is that the inner diameters of lined pipe differ widely from the nominal diameter and hydraulic calculations do require some knowledge of the pipe standard.

Nominal Size (DN)

Outside Diameter (mm)

Nominal Wall Thickness (mm)

PN 20

PN 35

Flange Class

100

122

-

5.0

7.0

150

177

-

5.0

8.0

200

232

-

5.0

8.0

225

259

5.0

5.2

9.0

250

286

5.0

5.6

9.0

300

345

5.0

6.3

10.0

375

426

5.1

7.3

10.0

450

507

5.6

8.3

11.0

500

560

6.0

9.0

12.0

600

667

6.8

10.3

13.0

750

826

7.9

12.2

15.0

Joints

Individual lengths of ductile iron pipe are joined either by flanges, couplings, or some form of spigot and socket arrangement.

Flanges

Flanges are flat rings around the end of pipes, which mate with an equivalent flange from another pipe, the two being held together by bolts usually passed through holes drilled through the flanges. A deformable gasket, usually elastomeric, placed between raised faces on the mating flanges provides the seal. Flanges are designed to a large number of specifications that differ due to dimensional variations in pipes sizes, and pressure requirements, but also due to independent standards development. In the U.S. flanges are ‘threaded’ and can be ‘welded’ onto the pipe. In the European market flanges are often welded on to the pipe. Flanges are available in a standard 125 lb. bolt pattern as well as a 250 lb. bolt pattern (steel bolt pattern). Both are usually rated at 250 PSI. A flanged joint is rigid and can bear both tension and compression as well as a limited degree of shear and bending. It is also dismantlable once constructed. Flanged joints cannot, however, be reliably used for buried pipe due to the possibility of soil movement placing very large bending loads on the joint.

Current flange standards used in the water industry are ANSI B16.1 in the USA, EN 1092 in Europe, and AS/NZS 4087 in Australia and New Zealand.

Spigot and Socket

Spigot and sockets involve a normal pipe end, the spigot, being inserted into the socket or ‘bell’ of another pipe or fitting with a seal being made between the two within the socket. Normal spigot and socket joints do not allow direct metal to metal contact with all forces being transmitted through the elastomeric seal. They can consequently flex and allow some degree of rotation, allowing pipes to shift and relieve stresses imposed by soil movement. The corollary is that unrestrained spigot and socket joints transmit essentially no compression or tension along the axis of the pipe and little shear. Any bends, tees or valves therefore require either a restrained joint or, more commonly, thrust blocks, which transmit the forces as compression into the surrounding soil.

A large number of different socket and seals exist. The most modern is the ‘push-joint’ or ‘slip-joint’, whereby the socket and rubber seal is designed to allow the pipe spigot to be, after lubrication, simply pushed into the socket. Push joints remain proprietary designs. The most common are the Tyton joint, developed by U.S. Pipe, the Fastite, by the American Cast Iron Pipe Co., and the Rapid, by Saint-Gobain PAM, which is marketed outside the U.S. Restrained joint systems are available too. Each of the four U.S. manufacturers has their own proprietary restrained joint system that generally involves a “boltless system”. Clow Water Systems has the Super-Lock joint, Pacific States Cast Iron Pipe Co. has the Thrust-Lock system, Griffin Pipe Products has the Snap-Lock joint, U.S. Pipe has the TR-Flex joint, and American Cast Iron Pipe has the Flex-Ring joint. Also available are locking gasket systems. Available for the standard ‘push-joint’ systems are the Sure Stop gasket by McWane, Field Lok by U.S. Pipe, and Fast Grip by American Cast Iron Pipe Co. These locking gasket systems work on the “Chinese Box” principle where you can push the pipe together, but will be unable to pull it apart (without using a special tool or blow torch on the gasket).

Manufacture

Ductile iron pipe is produced by a technique known as centrifugal casting, originally developed by Dimitr Sensaud deLavaud for cast iron pipe in 1918. The molten ductile iron is poured into a rapidly spinning water-cooled mold. Centrifugal force results in an even spread of iron around the circumference.

Internal Coatings

Ductile iron pipe is somewhat resistant to internal corrosion in potable water and less aggressive forms of sewage. However, even where pipe material loss and consequently pipe wall reduction is slow, the deposition of corrosion products on the internal pipe wall can dramatically reduce the effective internal diameter and effectively choke flow, increasing pumping costs and lowering system pressure, long before the pipe itself is at risk of failure. A variety of linings are available to reduce or eliminate corrosion, including cement mortar, polyurethane and polyethylene. Of these, cement mortar lining is by far the most common.

Cement Mortar Linings

The predominant form of lining for water applications is cement mortar centrifugallly applied during manufacturing. The cement mortar comprises a mixture of cement and sand to a ratio of between 1:2 and 1:3.5. For potable water, portland cement is used, for sewage it is common to use sulfate resisting or high alumina cement.

Cement mortar linings have been found to dramatically reduce internal corrosion. A DIPRA survey has demonstrated that the Hazen-Williams factor of cement lining remains between 130 and 151 with only slight reduction with age.

External Coatings

Unprotected ductile iron, similarly to cast iron, is intrinsically resistant to corrosion in most, although not all, soils. Nonetheless, due to frequent lack of information on soil aggressiveness, and to extend the installed life of buried pipe, ductile iron pipe is commonly protected by one or more external coatings. In the U.S. and Australia, loose polyethylene sleeving is preferred. In Europe, standards recommend a more sophisticated system of directly bonded zinc coatings overlaid by a finishing layer be used in conjunction with polyethylene sleeving.

Polyethylene Sleevings

Polyethylene sleeving was first developed by CIPRA (since 1979, DIPRA) in the U.S. in 1951 for use in highly corrosive soil in Birmingham, Alabama. It was employed more widely in the U.S. in the late 1950s and first employed in the U.K. in 1965 and Australia in the mid 1960′s.

Polyethylene sleeving comprises a loose sleeve of polyethylene sheet that completely wraps the pipe, including the bells of any joints. Sleeving inhibits corrosion by a number of mechanisms. It physically separates the pipe from soil particles, preventing direct galvanic corrosion. By providing an impermeable barrier to ground water, the sleeve also inhibits the diffusion of oxygen to the ductile iron surface and limits the availability of electrolytes that would accelerate corrosion. It provides a homogeneous environment along the pipe surface so that corrosion occurs evenly over the pipe. Finally, the sleeve restricts the availability of nutrients which could support sulfate-reducing bacteria, inhibiting microbially-induced corrosion. Sleeving is not designed to be completely water-tight but rather to greatly restrict the movement of water to and from the pipe surface. Water present beneath the sleeve and in contact with the pipe surface is rapidly deoxygenated and depleted of nutrients and forms a stable environment in which limited further corrosion occurs. An improperly installed sleeve that continues to allow the free flow of ground water is not effective in inhibiting corrosion.

Polyethylene sleeves are available in a number of materials. The most common contemporary compositions are linear low-density polyethylene film which requires an 8 mil or 200 m thickness and high-density cross-laminated polyethylene film which requires only a 4 mil or 100 m thickness. The latter may or may not be reinforced with a scrim layer.

Polyethylene sleeving does have limitations. In European practice, its use in the absence of additional zinc and epoxy protective coatings is discouraged where natural soil resistivity is below 750 ohm/cm, where resistivity is below 1500 ohm/cm and the soil is frequently water logged, where there are additional artificial soil contaminants or where there are stray currents. Due to the vulnerability of polyethylene to UV degradation, sleeving, or sleeved pipe should also not be stored in sunlight, although carbon pigments included in the sleeving can provide some limited protection.

Polyethylene sleeving is standardised according to ISO 8180 internationally, AWWA C105 in the U.S., BS 6076 in the U.K. and AS 3680 and AS 3681 in Australia.

Zinc Coatings

In Europe, ductile iron pipe is typically manufactured with a zinc coating overlaid by an either bituminous or polymer, normally epoxy, finishing layer. EN 545/598 mandates a minimum zinc content of 135 g/m2 (with local minima of 110 g/m2 at 99.99% purity), and a minimum average finishing layer thickness of 70 m (with local minima of 50 m) although some manufacturers, notably Saint-Gobain PAM considerably exceed these thicknesses.

No current AWWA standards are available for bonded coatings (zinc, coal tar epoxy, tape-wrap systems as seen on steel pipe) for ductile iron pipe, DIPRA does not endorse bonded coatings and AWWA M41 generally views them unfavourably, recommending they be used only in conjunction with cathodic protection .

Bituminous Coatings

As noted, zinc coatings are generally not employed in the U.S. and Australia. In order to protect ductile iron pipe prior to installation, pipe is instead supplied with a temporary 1 mil or 25 m thick bituminous coating. This coating is not intended to provide protection once the pipe is installed.

Producers

U.S.

In the United States ductile iron pipe is manufactured by McWane Inc.(consisting of four foundries – McWane Cast Iron Pipe Co., Clow Water Systems Company,Atlantic States Cast Iron Pipe Co. & Pacific States Cast Iron Pipe Co.), Griffin Pipe Products, U.S. Pipe & Foundry, and American Cast Iron Pipe Co. The primary headquarters for three of these four companies are based in Birmingham, AL.

Europe

Saint-Gobain PAM, a subsidiary of Saint-Gobain and the world’s largest ductile iron pipe manufacturer, is predominant in Europe. Saint-Gobain PAM formed in 1970 following the merger of Saint-Gobain and the company Pont–Mousson (PAM). Saint-Gobain PAM’s ductile iron pipe factory in the town of Pont–Mousson remains the world’s largest.

Australia

In Australia, Tyco Flow Control Pacific, a subsidiary of Tyco International, is by a wide margin the largest Australian manufacturer of DICL, after having purchased Tubemakers Water and its single Yennora Manufacturing Facility in Sydney’s west, from BHP in 1999.

Industry Associations

In the United States ductile iron pipe is often promoted to municipalities and consulting engineers by DIPRA, which is the Ductile Iron Pipe Research Association. Their focus is to promote the benefits of using ductile iron pipe on utility projects (water & sewer) over alternate products like PVC, PCCP, and HDPE.

Environmental

Ductile iron pipe in the developed world is normally manufactured exclusively from scrap steel. Ductile iron pipe itself can be recycled. In the U.S. with the growing ‘Green’ movement ductile iron pipe is in a natural position to regain market share lost to its largest competitor, the PVC industry, over the past 40 years. PVC pipe has negative environmental issues ranging from carcinogens produced at resin plants to the burning of it releasing dioxins into the atmosphere to its carbon footprint.

Colloquialisms

As a commonly used construction material ductile iron pipe has assumed various colloquial shortened names. In America it is commonly referred to as ‘ductile’, in the UK, by the initials, ‘DI’, and in Australia as the acronym, DICL (Ductile Iron – Cement Lined), pronounced ‘dickle’.

Notes

^ a b c Moser, A. P. and Folkman, Steven L. (2008) Buried Pipe Design (3rd edition) McGraw-Hill, New York, p. 336-337, ISBN 978-0-07-147689-8

^ a b IGN 4-50-03 – Operating Guidelines for the Use of Site-Applied, Factory Applied and Reinforced Factory Applied Polyethylene Sleeving on Ductile Iron Pipeline Systems
^ AWWA Manual M41 – Ductile-Iron Pipe and Fittings

External links

Official Web Site of Clow Water Systems Co.

Official Web Site of the Ductile Iron Pipe Research Association

Official Web Site of McWane Inc.

The history ductile iron manufacture in Australia

WSAA assessment of Saint-Gobain PAM pipe

Categories: Piping | Water industryHidden categories: Articles lacking sources from July 2008 | All articles lacking sources

Our K-9s are guaranteed to tell you if your imported cast iron meets the standard. www.roscosdogs.com
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How to make a casting from making the sand mould to the finished item. The video has been edited to fit the 10 minute time limit of You tube. It takes much longer than this!

Cast Iron Guttering System: 5 Steps to its Installation

Rainwater gutter system is not a common sight in the old homes, but however nowadays installation of guttering system has become a necessity while constructing a new home or renovating it. Now the most important thing is how to install the gutters whether its cast iron guttering or aluminium guttering in old buildings or houses and how easy or difficult is the installation.

Installing gutters can either be a very easy or a very difficult affair depending on the type of rainwater gutter (aluminium gutters, cast iron gutters, steel gutters etc) and the brand of the gutter that’s been purchased. The builders and designers always prefer buying cast iron guttering system from reputed online shops. There are some companies and suppliers that even provide the facility to install cast iron gutters easily and at a reasonable rate.

Nowadays the most popular, cost effective and durable guttering system comprises of cast iron material. This type of rainwater gutters is generally easy to install. So, it’s a DIY or do-it-yourself project. This means you may not require the help of a professional while installing the cast iron rainwater gutters. If you are not aware of the step by step processes of installing cast iron guttering system, read below:

Step 1

The first thing that you need to do to install cast iron rainwater gutters is to measure out the slope length of the eaves. After measuring out the length and the slope, go for buying the gutters. There are many online shops available for your essential cast iron rainwater systems needs.

Step 2

After buying the gutter, measure the length and cut it to match the eaves.

Step 3

After cutting the cast iron gutter attach the hanging brackets. These hanging brackets are parts that are hooked into the eaves and are then attached to the rainwater gutter for stability purposes.

Step 4

Once the cast iron guttering system is installed, it’s essential for the downspout to be placed. The cast iron rainwater gutter usually doesn’t have any special place for a downspout. Thus you yourself need to cut a square hole for the spout. After cutting down the hole, measure it and cut out to size the spout. Its best to perform a test fit of the downspout before its final assembly. When you come to the decision that the downspout can fit, fit it in its place.

Step 5

After installing the downspout, connect all the parts and corners of the cast iron gutter. You can also install leaf guards at places where trees are situated to check clogging up of your cast iron guttering system.

So, rainwater gutters installation is not so hard whether it’s the installation of cast iron or aluminium gutters. You only need to have proper knowledge and instructions regarding the material and how to install it. However, there are many companies offering the installation facility of rainwater gutters. It’s advisable to take the services of an installation expert for installing a new guttering system in your home than doing it all by yourself. If urgent installation is required, then follow the above-mentioned steps.

www.vermontironstove.com The WildFire Elm testing program continues with a new tool to measure the surface temperature and give valuable information on how hot various parts of the stove are. Ongoing testing on the secondary air tube system. Vermont Iron Stove, makers and suppliers of parts for all Elm wood stoves, Moretown, Vermont
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The current situation and development of China cast iron valve products

Cast iron valves have nearly 100 years of history in China, but only has made significant development in the latest 10 years. According to statistics, in the latest 10 years, the domestic iron valves, fittings have annual production from 0.2 million tons to 0.8 million tons, the average annual increase rate is about 20%. According to the information, cast iron valve applications generally can be divided into eight areas: waste water drains, building water supply, building drains, buried pipes, gas pipelines, electrical pipe, agricultural pipe, industrial pipe, etc. . The construction and drainage are fastest growing, followed by housing and agricultural development, but underground drainage pipes and pipelines still have big gap from foreign countries. 

However, cast iron valves and other fittings in China’s development are still behind comparatively. The producers of cast iron pipe fittings are still small and medium-sized enterprises.

In addition, there is no unified product technical and quality standards for China cast iron pipe fittings. Because of this, the quality of current cast iron pipe fittings is far from satisfactory, especially cast iron valves, its production costs are relatively as high as steel pipe fittings, so unable to meet the needs of many fields.

Market demand for cast iron valve products mainly from two aspects: First, supporting the use of cast iron pipe; Second, cast iron valves has good durability, fatigue resistance and corrosion resistance, and have good advantages of processing efficiency. Overseas, the cast iron valve has been widely used in chemical, pharmaceutical, food processing, indoor and outdoor plumbing, mechanical and electrical products, agriculture and other fields.

This article was from Dandong Foundry Blog.

For the whole article, please check Dandong Foundry Blog.

How to remove cast iron pipe

Difficulties of Painting Your Own Cast Iron Radiators

Cast iron radiators are often supplied in either primer undercoat paint or alternatively a finished top coat to protect and finish the radiator. If you choose to paint the radiators yourself and have them delivered in a primer undercoat you will need to paint two top coats onto the primer.

It is often tempting to leave the cast iron radiator finished in just the primer however this is not advisable as primer paint is designed to be an undercoat to protect the bare metal of the radiator from rusting in readiness for a top finishing coat. Primer paint is also not as smooth as top coat paint as it is designed for the top coat to be attracted and easily applied to the primer. As the primer is not smooth it is very difficult to dust or remove marks which can leave your cast iron radiator looking unsightly.

The best paint to use as a top coat is oil based paint which is durable to a high heat to avoid cracking or pealing of the paint as the radiator becomes hot and then cold. Cast iron radiators are usually supplied custom built and ready to install which raises the problem of being able to reach all areas of the radiator sections giving further difficulty in gaining an even coverage of paint. Once the radiator is in situ, painting behind the radiator is not easy to achieve due to the narrow spacing between each section of the radiator.

Using a brush to paint a cast iron radiator can cause brush marks and again even coverage is difficult to achieve. If you have decided to paint with a brush and are unhappy with the finish, it is very difficult to remove the paint with the only successful method being shot blasting which would require un-plumbing of the radiator and taking to a specialist shot blaster which can turn out to be a costly exercise and may well cause leakage problems to occur.

The best and most aesthetically pleasing method to paint a radiator is to wet spray each section of the radiator before the sections are built together to create the desired length of radiator you require to heat your room sufficiently. Spray painting each section separately allows all areas of the sections to be reached easily and the spray gives an even coverage. It is therefore recommended to have a specialist to paint a traditional cast iron radiator already built and in situ or to have your reproduction cast iron radiator supplied custom painted by a reputable supplier.

Certain specialist cast iron radiator suppliers, such as Paladin Radiators, have mastered the art of distressed and high light paint effects, adding value and interest to your cast iron radiator. These effects are difficult to achieve at home unless you hire a professional paint specialist.

Always check that the primer paint your cast iron radiator coated with will be compatible with your chosen top coat paint, a reputable dealer of cast iron radiators should be able to advise what primer has been applied and what top coat paints are applicable.

Steel Frame No need to build concrete walls CE certificate Main Motor Direct Drive – 20 HP (220V 3 phase 60Amp.)+/- 5% regulated 30 kW Engine Speed 1450RPM Cutting speed variable Production Rate 10 in 3cm (1 1/4″) granite in less than 60 seconds Cutting Thickness 4″-7″ (auto cut computerized) Step Cutting (Two way cutting) Over all damnations (L x W x H) 20′ x 16′ x 8.5′ Table Turn/Tilt Powered tilting 85° & Power rotating 0° – 360° Hydraulic (Stopping at 45° & 90° Automatic) Blade Tilt 0-45° (Hydraulic) Blade Size 16″ – 24″ Cut Length 126″ x 78 Features Laser guide, Cast iron bridge, Wired Remote control Microcomputer controlled, Hydraulic fluid water cooled Touch Screen (LCD) Control Panel, All machine parts imported to China and standard all over the world, Spare parts available in our warehouse LA Water With auto. stop 4 Gall/min Shipping Stocked in the West cost Warranty 1 Year parts & Labor Purchase Options Financing Available for 60 month Options Availability In Stock (CA, Los Angeles 1 left at this price)
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Ductile iron in China

Ductile iron is also known as nodular cast iron, spheroidal graphite iron, spherulitic iron.

Ductile iron is a kind of spherical graphite cast iron. The globalization and inoculation processes effectively improved the mechanical properties, particularly increased plasticity and toughness, which is higher than the strength of carbon steel.

Ductile iron is a kind of malleable iron. Ductile iron in the graphite shape was spherical. As the spherical graphite metal matrix separated the role of smaller, so it has high strength, ductility and toughness, so a wider application, in some cases can replace the carbon steel. Ductile iron is widely used in construction tools, equipment manufacturing, such as flat-panel buttons, butterfly buckle, wall nuts, washers and other fields.

Carbon steel has less than 0.3% carbon content, while the cast iron and ductile iron with carbon content the amount of at least 3%. The low-carbon steel makes the existence of carbon as free graphite sheet structure will not form. Cast iron in the natural form of carbon free form of graphite sheets. During inoculation period, the graphite sheet change through special processing methods into a tiny ball. This improvement made after the ball made of cast iron ductile iron and steel than the more superior compared to the physical properties.

Ductile Iron Grade:
ASTM A536 – 60-40-18, 65-45-12, 70-50-05;
DIN 1693 – GGG40, GGG50; DIN EN 1563 – EN-GJS-350, EN-GJS-400-15, EN-GJS-450-10, EN-GJS-500-7;
ISO 1083 – 400-15, 400-18, 450-10, 500-7;
JIS G5502 – FCD400-15, FCD400-18, FCD450-10, FCD500-7;
BS 2789 – 400/18, 420/12, 450/10, 500/7.

For more information about ductile iron products, please check Dandong Foundry’s Blog.

For more information about our company, please check Dandong Foundry

This is the Sandvik Coromant CoroMill 490 three inch facemill with ten inserts rough milling a nodular cast iron part on a Mazak
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