Pipe elbows
Pipe elbows are versatile pipe fittings used to make turns in piping systems, available in various angles and materials.
ASTM A234 WPB Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service.
ASTM A234 WPB refers to a specific grade of carbon steel pipe fittings, which are widely used in pressure piping and pressure vessel fabrication for service at moderate and elevated temperatures.
ASTM A234 WPB is a widely accepted standard for manufacturing carbon steel pipe fittings that are safe and reliable for use in various industrial applications.
ASTM A234 covers wrought carbon steel and alloy steel fittings (both seamless and welded) that are covered by the latest revision of various industry standards, including ASME B16.9, B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, and MSS-SP-97. These fittings are typically used for conveying fluids and gases under high pressure and high temperature conditions.
ASTM A234 specification has many grades, with WPB being the most common grade used for medium and high-temperature pipelines.
ASTM A234 WPB is a specification for wrought carbon steel and alloy steel fittings of seamless and welded construction, intended for moderate and high-temperature service. The WPB grade typically refers to carbon steel pipe fittings such as elbows, reducers, tees, and caps, used in pressure piping systems and pressure vessels.
The ASTM A234 WPB fittings are essential components in piping systems for transporting fluids under high pressure and temperature conditions. Their durability and strength make them suitable for a variety of industrial applications, ensuring safety and efficiency. For further details or specific requirements, it is recommended to consult a certified supplier.
ASTM A234 WPB pipe fittings are widely used in various industrial applications, such as:
ASTM A234 WPB is the most prevalent carbon steel grade for ASME B16.9 pipe fittings. Hot-formed WPB fittings upon which the final forming operation is completed at a temperature above 1150°F [620°C] and below 1800°F [980°C] need not be heat treated provided they are cooled in still air. Hot-formed WPB fittings finished at temperature in excess of 1800°F [980°C] shall subsequently be annealed, normalized, or normalized and tempered. Cold-formed WPB fittings, upon which the final forming operation is completed at a temperature below 1150°F [620°C], shall be normalized, or shall be stress relieved at 1100 to 1275 °F [595 to 690 °C]. The WPB fittings produced by fusion welding and having a nominal wall thickness at the welded joint of 3/4″ [19 mm] or greater shall be post-weld heat treated at 1100 to 1250 °F [595 to 675 °C].
| Grade | Type | C | Si | S | P | Mn | Cr | Ni | Mo | Other | ób | ós | δ5 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WPB | 0.3 | 0.1min | 0.058 | 0.05 | 0.29-1.06 | 0.4 | 0.4 | 0.15 | V:0.06;Nb:0.02 | 415-585 | 240 | 22 | 197 |
For each reduction of 0.01% below the specified C maximum, an increase of 0.06% Mn above the specified maximum will be permitted, up to a maximum of 1.35%.
The sum of Cu, Ni, Cr, and Mo shall not exceed 1.00%.
The sum of Cr and Mo shall not exceed 0.32%.
The maximum carbon equivalent (C.E.) shall be 0.50, based on heat analysis and the formula C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.
| Item | Tensile Strength (KSI) | Yield Strength (KSI) |
|---|---|---|
| WPB | 60 | 35 |
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