ASTM A334 Grade 8 Welded Carbon and Alloy-Steel Tubes/pipes
 

A334 Standard Specification for Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service.

ASTM A334 Grade 8 specification covers several grades of minimum wall-thickness, seamless and welded, carbon and alloy-steel tubes intended for use at low temperatures. Some product sizes may not be available under this specification because heavier wall thicknesses have an adverse affect on low-temperature impact properties.

A Elongation of Grade 11 is for all walls and for small sizes tested in full section.
B The following table gives the calculated minimum values

The size of ASTM A334 Grade 8 carbon and alloy welded pipe/tube
ERW; outer diameter:21.3-660mm thickness:6-25mm
LSAW; outer diameter:325-1524mm thickness:6-50mm
SSAW: outer diameter:219-3200mm thickness:5-25mm