DIN 1629 St52 seamless carbon steel pipe 6"SCH40 DIN1629 St37.0,St44.0,St52.0 DIN17175 ... .8,St45.8 EN10208 Gr. L245NB, DIN 1629 St52 seamless carbon steel pipe 6"SCH40 DIN1629 St37.0,St44.0,St52.0 DIN17175 ... .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 ...