Rectangular tube is a hollow strip of steel, also known as flat tube, flat square tube or square flat tube (as the name implies). When the bending and torsion strength are the same, the weight is lighter, so it is widely used in the manufacture of mechanical parts and engineering structures.

use:

Construction, machinery manufacturing, steel construction projects, shipbuilding, solar power support, steel structure engineering, power engineering, power plants, agricultural and chemical machinery, glass curtain walls, automobile chassis, airports, etc.

Classification of rectangular tubes:

Steel pipes are divided into seamless steel pipes and welded steel pipes (seamed pipes) hot-rolled seamless square pipes, cold drawn seamless square pipes, extruded seamless square pipes, and welded square pipes.

Among them, the welded square tube is divided into:

1. According to the process-arc welding square tube, resistance welding square tube (high frequency, low frequency), gas welding square tube, furnace welding square tube;

2. According to welding seam-straight seam welded square pipe, spiral welded square pipe.