The spiral welding steel pipe refers to the steel pipe with a steel tube with a seam with a seam with a steel belt or a steel plate bent to a round, square.
Welding steel pipes are used for oil drilling and machinery manufacturing. The furnace welding pipe can be used as water gas pipes, etc., and large -diameter straight seam welded pipes are used for high -pressure oil and gas transportation, etc.; Spiral welded pipes are used for oil and gas transportation, pipe piles, and bridge pier. Welding steel pipes are lower than seamless steel pipes and high production efficiency.
The production process of straight sewing pipes is simple, high production efficiency, low cost, and rapid development. The strength of the spiral tube is generally higher than that of the straight seam welded pipe. It can use a welded pipe with a larger diameter of the billet material, and can also use the same width to produce a pipe with different welded pipes with different rails. However, compared with the same length of the same length, the length of the weld is increased by 30 ~ 100%, and the production speed is lower. Therefore, most of the smaller -caliber welded pipes are welded with straight seams, and most of the large -caliber welded pipes are mostly spiral welded.
Classification
*According to the welding method, it can be divided into arc welded pipes, high -frequency or low -frequency resistance welded pipes, gas welded pipes, furnace welding pipes, and Bondi pipes.
*According to the shape of the weld, it can be divided into straight seam welded pipes and spiral welded pipes.
How to manage the spiral steel pipe safety?
Quality management In order to deal with the displacement and super -standard problems during the assembly of the seamless steel pipe mouth, the following preventive measures should be adopted:
(1) Apply internal heart adjustment equipment as much as possible.
(2) Do the precise measurement and maintenance work during assembly.
(3) Do the level classification work of the welding section during assembly.
(4) Partially effective with copper hammer or copper coin hammer.
(5) Laser cutting solutions should be carried out when the wrong mouth is flattened.
