American Petroleum Institute

Specification for FABRICATED STRUCTURAL STEEL PIPE - First Edition; SUPP 2: February 1972
 N STD 2B

Annotation

Coverage. This specification covers the fabrication of structural steel pipe formed from plate steel, with longitudinal and circumferential butt-welded seams, in sizes 16 in. OD and larger, with wall thicknesses 3/8 in. and greater, generally up to 40 feet in length, suitable for use in the construction of welded offshore fixed platforms. Pipe fabricated under this specification is intended to be used primarily in piling and main structural members, including tubular truss joints, where internal stiffeners are not required.

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