... \30\STD\60\80\100\120\140\160\XXS1) Name of product: seamless steel tube2) Application: pipes for usual structure and ... No.: ASTM A106 grade A/B, API 5L, X52, X42, ST52, K55, STK490, STPG, C20,etc. 4) We also produce other ... .240.35- 0.650.17- 0.370.0350.0400.25Mechanical properties of seamless carbon steel pipes, no less thanTensile strength, MPaYield strength ...