WPB commonly refers to Welded Pipe Beveling, a process in which the edges of a welded pipe are prepared with a bevel for welding. It ensures a smooth and strong joint in pipeline construction. Additionally, WPB can also refer to a material grade in pipe fittings, specifically in the context of ASTM A234 standard, where WPB stands for "Wrought Pipe Butt-weld." It's a standard specification for carbon steel and alloy steel pipe fittings for moderate and high-temperature service.
ASTM A106 A53, API 5L grade B A234 WPB and Grade B is common carbon steel material of pipe fitting., The ASTM A234 A234M is a standard specification.
WP = Welded Pipe ; B and C are grades. As per ASME these are Wrought products (Grades B and C) (since the welded pipe is a misleading terminology , in fact it could have been weldable pipes) Both are same with some material composition difference.
he designations "WPB" and "WPL6" refer to different specifications for pipe fittings.
WPB: This designation stands for "Wrought Pipe Fittings, Carbon Steel." It is a standard specification for carbon steel pipe fittings that are used in pressure piping and pressure vessel service at moderate temperatures.
WPL6: This designation is specific to low-temperature service. It stands for "Wrought Low-Temperature Pipe Fittings, Carbon Steel" and is intended for use in low-temperature applications, typically -50°F [-45°C].
