02551Stanford University

Threaded or socket weld (2 inch and smaller): ANSI B16.11 forged carbon steel, ASTM A105, 3000# class. Butt-Welded (2.5 inch and larger): ANSI B16.9, ASTM A234 WPB, schedule to match pipe. All pipe fittings that are in tunnels, trenches, and conduit systems shall be butt welded. ................
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