According to the situation in Shaanxi Province, which support systems are adopted?

According to the situation in Shaanxi Province, there are many slotted steel pipe formwork support systems.

The length of steel with hollow section is much larger than its diameter or circumference. According to the section shape, it is divided into circular, square, rectangular and special-shaped steel pipes; According to the material, it is divided into carbon structural steel pipe, low alloy structural steel pipe, alloy steel pipe and composite steel pipe; According to the use, it is divided into pipelines, engineering structures, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, high-pressure equipment steel pipes, etc.

According to the production process, it is divided into seamless steel pipes and welded steel pipes, in which seamless steel pipes are divided into hot rolling and cold rolling (drawing), and welded steel pipes are divided into straight seam welded steel pipes and spiral seam welded steel pipes. Steel pipe is not only used for conveying fluids and powdery solids, exchanging heat energy and manufacturing mechanical parts and containers, but also an economical steel.

Using steel pipes to make grids, columns and mechanical supports of building structures can reduce weight, save 20-40% metal and realize industrialized mechanized construction. Using steel pipes to make highway bridges can not only save steel and simplify construction, but also greatly reduce the area coated with protective layers and save investment and maintenance costs.

materials classification

1. Steel pipes can be divided into carbon pipes, alloy pipes and stainless steel pipes according to the pipe material (i.e. steel grade).

2. Carbon pipes can be divided into ordinary carbon steel pipes and high-quality carbon structural pipes.

3. Alloy pipes can be divided into low alloy pipes, alloy structural pipes, high alloy pipes and high strength pipes. Bearing tube, heat-resistant and acid-resistant stainless steel tube, precision alloy tube (such as kovar alloy), high temperature alloy tube.