... diameter: 16mm-610mm, thickness: 0.8-20.0mm2) Square tube: 16 x 16mm-400 x 400mm, thickness: 0.8-20 ... .0mm3) Rectangle tube: 19 x 10mm-500 x 300mm, thickness: 0.8- ... C,A192,A226,A315-B,A53-B,A178-C,A210-A-1,A210-CDINSt33,St37,St37-2,St35.8,St35.4, ... please never hesitate to contact us.Shandong ZY seamless steel tube TypeASTM A106-B seamless steel pipeInfo. of pipeO.D.:1 ...