The production process of straight seam welded pipe is simple, the production efficiency is high, the cost is low, and the development is rapid. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes. Welded pipes with larger diameters can be produced from narrower billets, and welded pipes with different diameters can also be produced from billets of the same width. However, compared with straight seam pipes of the same length, the weld length is increased by 30~100%, and the production speed is lower. Large diameter or thicker welded pipes are generally made directly from steel blanks, while small welded pipes and thin-walled welded pipes only need to be directly welded through steel strips. Then simply polish and brush it.
Welded pipe process flow
Raw material uncoiling - flattening - end shearing and welding - looper - forming - welding - internal and external weld bead removal - pre-correction - induction heat treatment - sizing and straightening - eddy current testing - cutting off - hydraulic inspection - pickling - final inspection (Strictly controlled)-packaging-shipping.
Features
The production process of straight seam welded pipe is simple, the production efficiency is high, the cost is low, and the development is rapid. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes. Welded pipes with larger diameters can be produced from narrower billets, and welded pipes with different diameters can also be produced from billets of the same width. However, compared with straight seam pipes of the same length, the weld length is increased by 30~100%, and the production speed is lower.
Application scope
Products are widely used in water supply projects, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, and urban construction. They are one of the twenty key products developed in my country.
For liquid transportation: water supply and drainage. For gas transportation: coal gas, steam, liquefied petroleum gas.
For structural purposes: piling pipes, bridges; pipes for docks, roads, building structures, etc.
