... .5-152mm 3.Thickness:0.35mm-2.5mm 4.Material:Q195,Q235 welded Steel Tubes1) Available shapes: round, square, rectangular, bread ... .4 - 3.0mm3) Steel grade: SPHC, 08AL, 08F, HG5, DF08, Q195-235, M84) Standards: ASTM, ANSI, API, JIS, DIN, EN, BS, UNI ...