Grade:SA234 WPB, SA234 WPC
A234 WPB steel pipe fittings mean the pipe fitting which material is ASTM A234 WPB , they are used for the pressure piping systems of moderate and high temperature services. ASTM A234 is the standard of pipe fittings material , it indicates the materials properties of different kinds of carbon steel and alloy steel, WPB is one of the steel grade in this standard . W means weldable, P means pressure, B is grade b ,refer to the minimum yield strength , like the astm A106 A53, Gr.B or API 5L Gr.B. A234 WPB is the most common carbon steel pipe fittings material .
The regular products of A234 WPB pipe fittings are elbows, tees, reducers, caps, cross . There are seamless and ERW A234 WPB pipe fittings, the seamless A234 WPB pipe fittings means the fittings are made from the seamless steel pipes, ERW means the fittings are made from ERW steel pipes . Welded A234 WPB pipe fittings mean the large sizes fittings which are pieces welded from steel plates.
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 .