... BV.QC certificate Quick Details Standard: BS, JIS, GB, DIN, ASTM, APIStandard: BS 1387, BS 1139, BS 6363, JIS C8305-... ... Q345, St33, St37-2, SS330, SS400, ASTM A 106B, ASTM A53, X42Quality:Manufactured to meet ISO9001, ASTM, API, SAE, DIN, BS, GB and ... can supplyThe following is the square tube size we can provide for you. Square steel tube (mm )Rectangular steel tube (mm)ODWTODWTODWTODWT15*150.6--1 ...