... , water supply , transporting natural gas, petrol , piling, building bridge, steel structures,Technical standard:1) ASTM A532) ASTM A1063) API 5L4 ... ASTM A106 GR.A ,A106 Gr.B,A53 Gr.A,A53 Gr.B,ASTM A179-C,A214-C,A192,A226 ... ,A315-B,A178-C,A210-A-13>STFA410,STB340, ... 1629 ST45,DIN1626 ST37,5>10#,20#,37Mn5,36Mn2VOther steel grade is available as per clients requirements.Ordinary ...