SA234 WP22 alloy seamless pipe fittings
Size 1/2"TO 24"(seamless), 26" TO 48" (welded)
Pressure SCH 5S TO SCH 160, XXS
Connection Butt Welding
Standard ANSI, JIS, DIN, EN, ISO, GB, SH AND HG
Packing wooden cases or customerized
Production Capacity 1000 Tons per month
Product Range: 45, 90, 180 degree,2D,3D,4D,5D,6D.......
Standard: ASTM A234
Maaterial:; WP22 CL1 CL3
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, % |
Element |
Eccentric Reducer |
Cap |
C |
0.12 |
0.10 |
Si |
0.26 |
0.28 |
Mn |
0.43 |
0.45 |
S |
0.008 |
0.006 |
P |
0.012 |
0.010 |
Cr |
2.15 |
2.18 |
Ni |
0.06 |
0.05 |
Cu |
0.05 |
0.05 |
Mo |
0.94 |
0.95 |
V |
0.02 |
0.02 |
AL |
0.006 |
0.008 |
Mechanical Properties
Mechanical |
Eccentric Reducer |
Cap |
Yield Strength(Mpa) |
345 |
350 |
Tensile Strength(Mpa) |
525 |
520 |
Elongation(%) |
32 |
33 |
Hardness(HB) |
157 |
150 |
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.