... Q195, Q215, Q235, Q345B, X42, Gr. B rectangular hollow section1. Item: square & rectangular hollow section2. Standard: GB, ASTM, BS, JIS,3. ... prices, etc. The products are widely applied to steel structure construction, leisure products, sports facilities equipments, mineral ... in the supply of ERW steel pipe, seamless steel pipes, rectangular steel pipes. We supply steel as the manufacturer's price ...