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Steel Pipe for Shipbuilding Product specifications Standard:ASTM A213, ASTM A312,ASTM A789, GB/T 14976-2002,GB/T 12771-2000 Grade:TP304/L/H, TP316/L/Ti, TP317/L, TP321/H, TP347H, TP310S, UNS S31803�...