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ASTM A234 WP22 Pipe Fittings

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ASTM A234 WP22 Pipe Fittings Supplied to an Australian Client

ASTM A234 WP22 Class 1 eccentric reducers

ASTM A234 WP22 Class 1 eccentric reducers, 2-1/2″x2″ XS.

ASTm A234 WP22 Class 1 caps

ASTM A234 WP22 Class 1 caps, 2-1/2″ SCH80, acc. to ASME B16.9.

All fittings are made from Cr-Mo low alloy steel grade WP22 Class1(raw material mill – BaoSteel) with butt welding ends. Photos were taken before heat treatment and sandblasting & painting. These fittings are supplied to a power plant in Australia.

Chemical Composition

The Chemical Composition of WP22 pipe fittings, %
ElementEccentric ReducerCap
C0.120.10
Si0.260.28
Mn0.430.45
S0.0080.006
P0.0120.010
Cr2.152.18
Ni0.060.05
Cu0.050.05
Mo0.940.95
V0.020.02
AL0.0060.008

Mechanical Properties

MechanicalEccentric ReducerCap
Yield Strength(Mpa)345350
Tensile Strength(Mpa)525520
Elongation(%)3233
Hardness(HB)157150

Heat Treatment & Inspection

Both the ASTM A234 WP22 reducers and caps were heat treated by the method of normalizing and tempering. The normalizing temperature was at 940°C while the tempering temperature was at 740°C. After heat treatment, ultrasonic tests were implemented to ensure the fittings are free of defection.

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