... ,Pipe of Pipelines Code NO.VarietyNormal Steel GradeStandard NO.1Structure pipe10,20,35,45,Q235,Q295,Q345,40Cr etcGB/T81622Pipe for ... R360/410W,KSTB,KSTS,KSTPG,KSTPTGB/T53128Hydraulic prop Tube20,35,45,27SiMnGB/T173969American Standard PipeA,BASTM A106 ASTM A5310Casing and ... more than 200,000 tons. The Strong Eagle series seamless steel tube has been awarded with the Household Name of Jiangsu Province ...