Chinese Wholesale Welding Schedule 40 Black Pipe - ASTM A234 WPB & WPC pipe fittings including elbows, tee, reducers – Spiral
Chinese Wholesale Welding Schedule 40 Black Pipe - ASTM A234 WPB & WPC pipe fittings including elbows, tee, reducers – Spiral Detail:
Chemical Composition of ASTM A234 WPB & WPC
Element |
Content, % |
|
ASTM A234 WPB |
ASTM A234 WPC |
|
Carbon [C] |
≤0.30 |
≤0.35 |
Manganese [Mn] |
0.29-1.06 |
0.29-1.06 |
Phosphorus [P] |
≤0.050 |
≤0.050 |
Sulfur [S] |
≤0.058 |
≤0.058 |
Silicon [Si] |
≥0.10 |
≥0.10 |
Chromium [Cr] |
≤0.40 |
≤0.40 |
Molybdenum [Mo] |
≤0.15 |
≤0.15 |
Nickel [Ni] |
≤0.40 |
≤0.40 |
Copper [Cu] |
≤0.40 |
≤0.40 |
Vanadium [V] |
≤0.08 |
≤0.08 |
*The Carbon Equivalent [C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15] shall be no greater than 0.50 and shall be reported on MTC.
Mechanical Properties of ASTM A234 WPB & WPC
ASTM A234 Grades |
Tensile Strength, min. |
Yield Strength, min. |
Elongation %, min |
|||
ksi |
MPa |
ksi |
MPa |
Longitudinal |
Transverse |
|
WPB |
60 |
415 |
35 |
240 |
22 |
14 |
WPC |
70 |
485 |
40 |
275 |
22 |
14 |
*1. WPB and WPC pipe fittings manufactured from plates shall have a minimum elongation of 17%.
*2. Unless required, hardness value doesn’t need to be reported.
Manufacture
The ASTM A234 carbon steel pipe fittings may be made from seamless pipes, welded pipes or plates by shaping operations of pressing, piercing, extruding, bending, fusion welding, machining, or by a combination of two or more these operations. All welds including welds in tubular products from which fittings are made shall be made in accordance with ASME Section IX. Post-weld heat treatment at 1100 to 1250°F[595 to 675°C] and radiographic examination shall be performed after the welding process.
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