... -Q235, H08, S08, 08AL, M6, SPHC, 65Mn, T8-T10A, 20MnSi hot dipped galvanized coilSGCC SPCD SPGC SPCE STMA653 ASTM A792 Q195 DX51DThickness: 0 ... ASTM A500 or EN10219We are specialized in the production of high-frequency square tube, with a combination of rolling, setting, ... quality strip steel and advanced equipment are used to produce high-frequency square tube of all sizes. Our annual output reaches ...