... , 300 series O.D: 10-273mm Certification: ISO square steel pipe The main productsCold draw welded stainless steel, cold draw welded ... stainless steel pipe, cold draw welded stainless steel pipesGrade304, 304L, 304H, 310S, 316 ... customers’ requirementsApplicationsFluid and gas transport, structure, boiler, heat-exchanger, super heater