Hollow Section
The square tube is a steel tube with equal sides. It is widely used to manufacture mechanical parts and engineering structures. The uses of square tubes include construction, machinery manufacturing and steel structures .方管是具有相等边的钢管。 它被广泛用于制造机械零件和工程结构。 方管的用途包括建筑,机械制造,钢结构和其他项目.
