... , ASTM, API Outer Diameter: 18 - 460 mm Thickness: 3 - 60 mm Product NameASTM STANDARD Carbon Steel PipeBrandZHONGYE Steel Pipe ( By ourself ... 4/8),45#(DIN CK45),16mn(ST52.4) etc.b. JIS Standard10#(STPG38,STS38,STB30,STB33,Stb35), 20#(STPG42 ... C),20#(ASTM A106/53 Gr.B, A178-C,A210-A-1,A315-B,AISI1020),45#(AISI1045), 16mn(ASTM ... hesitate to let us know, thanks ASTM A106 Grade B carbon seamless steel pipe