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Document Designation and Title Year Select Item(s) A139/A139M Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over) 04 A139 Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over) 00 A139 Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over) 96