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Everything You Need To Know About Malleable Iron Pipe Fittings

Dec. 03, 2021

Malleable Iron Pipe Fitting


What are malleable iron pipe fittings?

Malleable iron pipe fittings are those fittings having the property of malleability. This is a physical property of metals and metalloids, or any kind of matter. We call a metal malleable when it can easily be deformed, especially by hammering or rolling, without cracking the metal. Malleability is important to form pressing materials such as metals and plastics.


Types of malleable pipe fittings

There are various pipe fittings that are made of malleable materials. Some of the common malleable fittings are:

  • Pipe Cap

  • Pipe coupling

  • Pipe Elbow

  • Pipe Nipples

  • Pipe Plug

  • Pipe Tee

  • Pipe Union


What are malleable iron pipe fittings made of?

Malleable iron, just like cast iron is produced by a casting method but they are actually quite different from each other. Although Malleable iron fittings start out as cast iron fittings, they are then transformed into a much more durable malleable iron through a heating process.

● White cast iron

White cast iron was used in both cast iron and malleable iron fittings. White cast iron has a presence of cement that gives off a white surface, hence the name. White cast iron is too brittle for many structural applications but with its good hardness and abrasion resistance, it can be used in many applications including teeth of a backhoe's digging bucket and lifter bars in ball mills. This material is also relatively low cost.

● Malleable cast iron

Malleable iron starts out as white iron casting but is then treated at a heat of roughly 1,650°F, 900°C. Malleable iron contains more blunt boundaries as opposed to flakes, which eliminates the stress concentration problems that grey cast iron can cause. Malleable iron has properties that are very similar to mild steel.

● Ductile cast iron

Ductile cast iron is a more recent development. Small amounts of magnesium are added. Ductile iron is very similar to malleable iron, but parts can be cast larger compared to malleable iron where there is a limit of how large the part sections can be cast. Blue, electrostatic epoxy paint is added to items like pitless spools, well seals, and well caps for corrosion resistance.


Manufacturing Process

Malleable iron fittings are made using the most sophisticated metallurgical and processing controls. These fittings are usually made through casting and an automatic precision pattern extrusion. Malleability occurs due to metallic bonding present in most metals. The varieties of free electrons formed during the loss of electrons emerging from the outer-most electron shells of the metal atoms lead to layers of the metal sliding over one another. This process makes the metal malleable.


From the manufacturer of malleable iron pipe fittings in China

Shijiazhuang Donghuan Malleable Iron Castings Co., Ltd. manufactures pipe joints of various wall thicknesses and materials for many industries.  Our factory cooperates with many well-known companies. We are a professional manufacturer of Malleable iron pipe fittings in China, with moreover 30 years in this field. Competitive price, best quality, abundant stock, and fast delivery are our great advantage. Hope that we may build business cooperation in the future.