good quality best service reasonable price seamless steel pipe 1 OD: 10mm-1219mm Thickness: 1mm-80mm2 Standard: BS, EN, JIS , ASTM ,GB,DIN,API 5L/5CT,GB3 Length: 5-12m, fixed or unfixed length, or as customer’s requirement.4 Material: A106, A53, A179, A192, GR.A/B/C, E235/E355/E315/E275 ST35/37/45/52, Q195/Q235/Q345, 10#/20#/16MN, STPG370/STS370/STPT370,STKM11A /STKM12/STKM13/STKM14,(A,B,C) X42/ ...