We can supply Boiler Seamless Carbon Steel Pipe,ASTM A 106GRB,A 53 ... 8000tons stocks pipeBo We can supply Boiler Seamless Carbon Steel Pipe,ASTM A 106GRB,A 53, DIN 2448 ... standard,aslo we have 8000tons stocks pipe. Seamless Steel Pipe1) Standard: GB DIN ASTM EN BS ... 5 - 55mm2) Application: pipe used for mechanical structure, hydraulic pressure, pneumaticlinear actuator3) Material: 10#, 20#, 35#, 45#, ...