S690QLH結構鋼管
S690QH/S690QLH belongs to the group Unalloyed and fine-grained steel structural hollow sections (EN10210-3), Hot-worked structural steel hollow sections - Part 3.
The structural hollow of circular steel tubes is an important component of all types of steel structures in industry and construction. Structural hollow profiles with a common diameter are produced using a hot rolling process.
By incorporating steel pipes into the design, various structures can be more easily conceived and constructed. Steel tubes are economical; they reduce weight but increase strength.