2. Calculation formula of round steel weight: diameter mm× diameter mm×0.006 17× length m, for example: calculation of round steel 20mm (diameter )× 6m (length): 20× 20× 0.00617× 6 =/kloc-.
3. Calculation formula of reinforcement weight: diameter mm× diameter mm×0.006 17× length m, for example: reinforcement 20mm (diameter )×12m (length), calculation: 20× 20× 0.00617×/kloc-.
Extended data:
1. steel pipe, hollow section, its length is much larger than the 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.
2. According to the use, it can be divided into steel pipes for conveying pipelines, steel pipes for engineering structures, steel pipes for thermal equipment, steel pipes for petrochemical industry, steel pipes for machinery manufacturing, steel pipes for geological drilling, steel pipes for high-voltage equipment, 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.
3. Steel pipe is not only used for conveying fluid and powdery solid, 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 mechanized construction of factories. 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.