What is the manufacturing process of ASTM A234 WPB pipe fittings?

The process of A234 WPB pipe fittings manufacturing is called “wrought” which means it could be casted or forged. Usually the ASTM A234 WPB elbows , tees, reducers are made from steel pipes,the caps are made from plates. But the large sizes pipe fittings are commonly manufactured in pieces and welded together .

ASTM A234 is standard of the pipe fitting material. However, this is indicating the properties of the material of various kinds of alloy steel and carbon steel. WPB is a steel grade in which W stands for weldable, B is grading B and P stands for pressure. Thus it is referring minimum yield strength.

What is ASTM A234 WPB

ASTM A234 is Standard Specification for steel pipe fittings includes carbon and alloy steel material for moderate and high temperature services. It covers steel fittings of seamless and welded types. Steel Pipe fittings are applied in pressure pipelines and in pressure vessel fabrications. These fittings material consist of killed steel, forgings, bars, plates, seamless or HFW (fusion welded) pipe products, with filler metal added.

ASTM A234 includes wrought carbon steel and alloy steel fittings of seamless and welded construction covered by the latest revision of ASTM B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, and MSS-SP-97. etc.

As we know, ASTM A234 steel pipe fittings are used in pressure piping and in pressure vessel fabrication, for services at moderate and elevated temperatures. The fittings material in this standard consist of killed steel, forgings, bars, plates, seamless or fusion-welded tubular products with filler metal added.

In this standard it covers the specification of elbows, tees, reducers, caps and cross, it usually adopt butt welding ends.

Grades in ASTM A234

ASTM A234 specification has many grades, such as WPB, WPC, WP5, WP9 WP11, WP12, WP22, WP91 and so on.

In these standard Grade WPB is the most common material used for medium and high temperature pipelines. W means weldable, P means pressure, B is grade b, refer to the minimum yield strength.

The source raw material of ASTM A234 WPB steel pipe fittings may be from steel pipe, such as ASTM A106 Gr.B and C. Also from steel plate, as ASTM A285 Gr.C, ASTM A516 Gr 70, ASTM A572 etc.

ASTM A234 WPB steel pipe fitting chemical and mechanical features

Grade WPB fittings made from the steel pipes or plates maximum C is 0.35%.

Forging fittings Carbon content 0.35% maximum and Silicon content 0.35% maximum, no minimum.

For each reduce of 0.01 of Carbon content, Manganese maximum content increase 0.06%, up to the maximum 1.35% for Mn.

Copper, Nickel, Niobium and Molybdenum sum content shall not exceed 1.00%.

Niobium + Molybdenum shall not exceed 0.32%.

Get in touch

Welcome to Sunny Steel Enterprise Ltd.

Sunny Steel provide a wide range of steel products as Steel pipes, Seamless tube and seamless pipes, Alloy pipes, Pipe fittings, Composite steel pipe used in the industry, construction etc.


Contact Form

Name

Email *

Message *

Popular posts from this blog

Barred Tee

Image
A barred tee is a tee or any fitting with a branch used in pipelines that is pigged and has a restriction bar welded internally preventing the pig from traveling down a branch connection. Barred tee is a pipe fitting that is used in a pig launcher or receiver system in a piping system to ensure the pig could pass the branch safely. Design considerations for barred tee The barred tee will be used when there is a requirement for pigging. Thus, many of its applications can be found in the pipeline or in the subsea field. The bar plates that welded internally at the branch are to avoid the pig from changing direction or getting stuck at the branch outlet. The design of the bar plates must be in sufficient quantity, thickness and adequately spaced to ensure the smoothness for the pig to run through the main pipe, and at the same time not affecting the flow that was meant to flow through the branch. Normal practice is to ensure that the opening in the branch pipeline after gui
Read more

How to Calculate a Pipe Bend?

Image
Pipe fittings are necessary to join together pipes, or to change the direction of an existing pipe. Pipes and pipe fittings are made of a variety of materials, depending on the fluid or gas being transported. Most pipe fittings tend to be either threaded or able to slip over the pipes they connect. Whether you are using steel pipes of PVC pipes, a chemical solvent is required to create a seal between the pipe and the fittings. Measure the required length of the pipe to be installed, keeping in mind the extra length required where the pipe will be inserted into the fitting. Mark this length on the pipe. How to Calculate a Pipe Bend Whether you are bending pipe for running electrical conduit or a metal project, calculating the bend for the start and end point can be an important factor. While there are different types of pipe benders on the market, they all share a common identification for the operation. Identified on all pipe benders is the size of pipe the unit will bend alon
Read more

Saddle previously

Image
Saddle previously is the ventilation ducts 'crotch tee', its shaped like pants, there Equal and unequal diameter, the formal name is "tube tapered pants tee." Carbon steel saddle previously There is no standard size, to be based on three tube spacing center line of the front and graphic design draw graphics, Lofting produced, lofting a certain degree of difficulty. We are manufacturer of Saddle previously and supply high quality Saddle previously in both large and small quantities worldwide & offer you the best prices in the market. Size range: 1/2 to 72 inches Sheet metal is engaging, steel welding. Industrial Processes Type: Sweepolet Saddle, Steel Saddle, Carbon Steel Saddle, Stainless Steel Saddle, Alloy Steel Saddle Applications of saddle previously: Saddle previously is to replace the existing tee fitting, the use of flexibility, praised by domestic and foreign markets. Saddle pre
Read more