... in 1994, is a leading manufacturer and exporter of stainless steel welding pipe/tube, outer diameter less than 219mm. We professionally produce ... applicable field: heat-exchangers, condensers, pipe fittings, electric power ,paper making, medicine, etc.3) Stainless steel materials: TP304, TP304L, TP316L, TP321 ... status: heat treatment5) Annual production capacity: 1800 tons welded stainless steel pipe