... , H08, S08, 08AL, M6, SPHC, 65Mn, T8-T10A, 20MnSi hot dipped galvanized coilSGCC SPCD SPGC SPCE STMA653 ASTM A792 Q195 DX51DThickness ... -frequency square tube of all sizes. Our annual output reaches up to 50000-80000 tons. The tubes are used for watersupply ... freely. Our . Welcome to your email for our offer hot dipped galvanized coil