... OD:25.4-304.8mm Standard: GB, BS, ASTM A53-2007, API5L 3PE Welded Steel Pipe1. Out ... /T 3091-2001, BS1387-1985, DIN EN10025, EN10219, ASTM SCH40, ASTMSCH804. Surface Finish: Galvanized, electro galvanized, black1 ... , St14, St33,St37, St44, ST52ASTM A 53: Gr. A, Gr B, Gr C, Gr.DAPI 5L: A, B, X42, X46, X52, ... L360, L390, L415, L450, L485, L555ASTM A252: Gr.1 Gr.2 Gr.3 Size range:Outer Diamter: 25.4mm - 304. ...