... ,C,DDIN17204 Gr. C22,Ck22,Cm22,C35,Ck35,C45,Ck45JIS G3444 Gr.STK290,STK400,STK490,STK500,STK540 ASTM A53 Gr. A,BASTM ... .P1,P2,P5,P9,P11,P12,P15,P21P22,P91,P92 JIS G3455 Gr. STS370,TS 410,STS 480 DIN2448 Gr. St35 ... A199 Gr.T4,T5,T7,T9,T11,T21,T22,T91 JIS G3461 Gr.TB340,STB410,STB510 ASTM A210 Gr. A-1 ...