1.Heat Exchanger Stainless Steel Pipe 2.Mterial:Yongxing Special Steel 3.Standard:ASTM,ASME,GB,JIS,DIN,EN. 4.Mterial:Yongxing Huzhou Dapu ... stainless steel seamless pipe respectively.Heat Exchanger Stainless Steel PipeNameHeat Exchanger Stainless Steel PipeStandardASTM A213,ASTM A312,ASTM A269,ASTM A778,ASTM A790,DIN 17456,DIN 17458 ...