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Hebei haihao high pressure flange & pipe fitting group was established in 1982, located in Mengcun County the hometown of pipe fittings in China.


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What is the ASTM A234 WP22 pipe fitting?

ASTM A234 WP22 pipe fitting means the pipe fitting which material is ASTM A234 WP22,they are used for the pressure piping systems of moderate and high temperature services.ASTM A234 is the standard of pipe fittings steel material,WP22 is one of the steel grade in this standard.W means weldable,P means pressure,22 is the grade.

Chemical Composition (%) of ASTM A234 WP22

Grade C Mn P S Si Cr Mo
WP22 Class1 0.05-0.15 0.3-0.6 ≤0.04 ≤0.04 ≤0.5 1.9-2.6 0.87-1.13
WP22 Class3 _ _ _ _ _ _ _

Mechanical properties of ASTM A234 WP22

Item Tensile Strength KSI(MPa) Yield Strength KSI(MPa)
WP22 Class1 60-85(415-585) ≥30(205)
WP22 Class3 75-100(520-690) ≥45(310)


Type of the ASTM A234
WP22 steel pipe fittings:

The regular products of A234 WP22 pipe fittings are elbows,tees,reducers,caps,cross.There are seamless and ERW A234 WP22 pipe fittings,the seamless A234 WP22 pipe fittings means the fittings are made from the seamless steel pipes,ERW means the fittings are made from ERW steel pipes.Welded A234 WP22 pipe fittings mean the large sizes fittings which are pieces welded from steel plates.

Manufacturing process ofASTM A234 WP22 steel pipe fittings:

The process of A234 WP22 pipe fittings manufacturing is called “wrought” which means it is casted or forged.Usually the ASTM A234 WP22 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.

Hebei Haihao Group has more than 20 years experiences in ASTM A234 WP22 pipe fittings manufacturing,we can supply all the range of the fittings including the elbows,tees,reducers and caps of high quality and soon delivery.

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