... exporter of stainless steel welding pipe/tube, outer diameter less than 219mm. We professionally produce welded stainless steel pipes, and we ... ASTM A3122)Product applications and applicable field: heat-exchangers, condensers, pipe fittings, electric power ,paper making, medicine, etc.3) Stainless ... ) delivery status: heat treatment5) Annual production capacity: 1800 tons welded stainless steel pipe