... authentication 3standards: ASTM,GB,DIN,JIS 4First-class quality NAME:Structure pipeOD: 1/4---28inch. WT: SCH20 SCH30 SCH 40 SCH80 ... service, petroleum cracking, chemical fertilizer equipment,drawing-oil-equipment and structure purposes.Packing: Bundles, seaworthy packing Main Export Market: Middle East ...