... T12/T5 ASTM A209 T1 2) Certificate:ISO9001-2000,PED, API, TS16949,KR,LRS, DNV3) Standard:ASTM A106, ASTM A53, ASTM-A179, ASTM-A192, ASTM-A210 ... A1/C, ASTM-A213(T11/T12/T22/T5), ASTM A209(T1),ASTM-A333(Gr.6), ASTM-A334(Gr.6), ASTM-A335 ... (STB340/STB 410), JIS G 3445(STKM 11A/12B/13B), EN-10216, BS-3059 II, DIN17175, DIN1629, etc.4) Size ...