... the most competitive price. --Welded Square Steel Pipe/Welded Square Steel Tube-- Material of Welded Square Pipe: 1) Q195 ... STBA26; A53(A, B), A333, A369 Standard of Welded Square Pipe: BS, ASTM, DIN, JIS, ASME O ... Suqare Product Type: Square tubes, ERW tubes, Welded steel pipe, Galvanized steel pipe etc.; Usage: ... are regularly maintaining bulk stock in every item, we can arrange supplies in time and ...