Hot Dip Galvanized Seamless Steel Pipe Manufacturer p355nl2 yelp
P355N, P355NL1, P355NL2 Delivery Condition Formed, Normalized, Normalized and Tempered, Quenched and Tempered, (Annealed & Pickled for Stainless Steel Pipes) Finish of pipe Hot Rolled No.1 Mill Finish, Polished, Mirror, Matte, 240 Grit, 400 Grit, 500 Grit for Stainless Steel Pipes Hot dipped galvanized with zinc 200~260g/m2;
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forged steel properties astm 4140 gb 42crmo din 42crmo4