We can supply Boiler Seamless Carbon Steel Pipe,ASTM A 106GRB,A 53, DIN 2448,API 5L standard,aslo we have 8000tons stocks pipeBo We can supply Boiler Seamless Carbon Steel Pipe,ASTM A 106GRB,A 53, DIN 2448,API 5L standard,aslo we have 8000tons stocks pipe. Seamless Steel Pipe1) Standard: GB DIN ASTM EN BS AND SO ONa) O.D.: 21.3mm-711mmb) Wall thickness: 0.5 - 55mm2) Application: pipe used for ...