API 2B pdf download Specification for the Fabrication of Structural Steel Pipe 3.2fabricator:The person,firm, company,or corpora-tion executing the contract or agreement with the purchaser tofabricate the structural steel pipe under this specification.3.3girth weld: A circumferential butt-welded seamlying in a plane perpendicular to the longitudinal axis ofthe pipe,used to join tubular sections into lengths ofstraight pipe. 3.4longitudinal seam: A butt-welded seam...