... A106/A53 GRB, ST3 DIN 1629 st45 seamless pipe for water Marking :P/O No,SPEC. Grade,Size, Heat ... customers’ requirementsTechnicsCold draw and hot rolledSurfaceBlack painting.anti-corrosion oil.galvanized or as per required by customerEndsPlastic ... centra-station, boiler, powerstation,shiping military,chemical industry, environment protection, traffic, food industry, medical equipement and so on. MOQ5 ...