ASTM A234 WPB is a standard specification for piping fittings made from carbon steel and carbon-manganese steel materials, it's a common material of carbon steel pipe fittings. "WPB" stands for "wrought pipe fitting of black" .
One of the significant advantages of ASTM A234 WPB material is its excellent corrosion resistance. The material can withstand harsh industrial environments and is resistant to rust, corrosion, and wear and tear. It is also heat resistant, making it suitable for use in high-temperature applications. The fittings use A234 WPB material mostly found in oil and gas industry, petrochemicals, power plant, shipbuilding, and other industrial applications. These fittings are used to connect pipes, valves, and other equipment to form a piping system.
A234 WPB pipe fittings are available in various types, such as elbows, tees, reducers, stub-ends, caps, and crosses. These fittings are manufactured based on the ASME B16.9 and MSS SP-75 standards.
ASTM A234 WPB chemical composition
| Grade |
C |
Mn |
P≤ |
S≤ |
Si |
Cr |
Mo≤ |
Ni≤ |
Cu≤ |
| WPB |
0.3max |
0.29-1.06 |
0.05 |
0.058 |
0.1min |
0.4max |
0.15 |
0.4 |
0.4 |
Fittings made from bar or plate may have 0.35 max carbon.
Fittings made from forgings may have 0.35 max carbon and 0.35 max silicon with no minimum.
For each reduction of 0.01 % below the specifified carbon maximum, an increase of 0.06 % manganese above the specifified maximum will be permitted, up to a maximum of 1.65 %.
The sum of Copper, Nickel, Chromium, and Molybdenum shall not exceed 1.00 %.
The sum of Chromium and Molybdenum shall not exceed 0.32 %.
In addition to its durability, ASTM A234 WPB material is easy to work with, and it can be fabricated into various shapes and sizes to meet the specific needs of different applications. The material can be easily welded, bent, and threaded, which makes it a cost-efficient option for industries that require a lot of piping fittings.
Furthermore, ASTM A234 WPB material is compatible with almost all types of piping systems, whether they are in refineries, chemical plants, power stations, or water treatment facilities.
Many countries around the world use A234 WPB material and fittings. The need is increasing day by day, and there is a high demand for these fittings as they are crucial to several industries' functioning. Countries like the United States, Canada, India, China, Japan, South Africa, Brazil, and many others require A234 WPB fittings for various applications.
