Malleable Iron vs Forged Iron Pipe Fittings

07 Sep.,2022

 

carbon steel nipple

We get this question a lot from customers who are often trying to determine if they should use malleable iron fittings, wrought iron threaded fittings or socket weld fittings. Malleable iron fittings are the lighter fittings in the pressure classes. They are manufactured for light industrial and plumbing use up to 300 psi. Some malleable fittings such as floor flange, lateral, street tee and bullhead tees are not commonly available in forged iron.

 

Malleable cast iron offers more ductility, which is often necessary in light industrial use. Malleable cast iron fittings are not suitable for welding (if you need to weld something on).

Elbow- Beaded Black Malleable Iron Pipe Fittings with Ribs BS Thread

Elbow- Beaded Black Malleable Iron Pipe Fittings with Ribs BS Thread

Black fittings, also known as black malleable pipe fittings, are used to convey gas and water. They are connected to black iron and black steel pipe to form a tighter seal than black steel fittings.

 

Black malleable iron fittings are available in nominal pipe diameters of up to 6 inches, but are more commonly available in 4 inches. Ductile fittings include elbows, tees, couplings and floor flanges. Floor flanges are very popular for securing items to the floor and we sells a wide range of malleable cast iron fittings online which can be found here.

 

Malleable iron pipe fitting: round caps, elbows,   tees, sockets, bends, nipples, unions, crosses, flanges, plugs, backnuts,  crosses over, etc.

 

Cap- Hot-dipped Galvanized Malleable Iron Pipe Fittings with BS Thread

Caps

Malleable cast iron cap fittings have thicker walls and can withstand higher pressures than Class 150 fittings. Models are suitable for use with air, water, oil, gas and steam. For use with suitably rated fittings. Forged steel black and galvanised cap fittings provide you with a simple, economical installation solution for water and oil in applications in the chemical, petrochemical, pulp, paper, shipbuilding, waste incineration and semiconductor industries. Black and galvanised malleable iron fittings are interchangeable with black cast iron or steel. For low pressure piping applications including air, water, natural gas and steam.

 

90 degree street elbow

Black and galvanised malleable iron - Class 150 elbows are interchangeable with black cast iron or steel.

For low pressure piping applications including air, water, gas and steam. Galvanised fittings are rust and corrosion resistant, Malleable Iron - street elbows are designed with thick walls to withstand higher pressures than Class 150 fittings. They have NPT threads and are suitable for use with air, water, oil, gas and steam.

 

Elbow- Plain Cold Galvanized Malleable Iron Pipe Fittings with BS Thread

 

Forged Iron Pipe Fittings are available as socket weld pipe fitting or threaded pipe fitting. Forged fittings are made from A105 (carbon steel), stainless steel or nickel alloys. These fittings are thicker and heavier and are suitable for heavy industrial use. Threaded pipe fittings and socket weld pipe fittings are available up to 4 inch nominal pipe size.

 

Forged Iron Threaded or Socket Weld Fittings are more expensive in sizes bigger than 2 inch compared to their malleable iron or butt weld counter parts.

 

Malleable iron fittings and threaded pipe fittings differ in material metallurgy, pressure rating and application. It is important to make the appropriate choice between them for the intended application.

 

We are one of the leading manufacturers and exporters on malleable iron pipe fittings and casting in China. We mainly have five series of products: Malleable Iron Pipe Fittings, Steel pipe, Carbon Steel Pipe Fitting. Moreover, our factory is capable of developing the mould which enables us to produce customized products as per the requirements of the clients′ drawings.If you want to know more information about  malleable iron fittings for sale, welcome to contact us.