welded steel tubes 1.Standard:ASTM,ANSI,API,GB,DIN,JIS,EN 2. ... .35mm-2.5mm 4.Material:Q195,Q235 welded steel tubes1) Available shapes: round, square, rectangular, bread shaped 2) Thickness: 0.4 ... /T We can produce precision and high-frequency welded steel tubes and pipes with all possible dimensions and shapes available. welded steel ...