What is the difference between longitudinal and spiral steel tubes
There are many differences between longitudinal steel pipe and spiral steel pipe due to different production processes. The differences between longitudinal seam steel pipe and spiral steel pipe are discussed in detail below.The production process of longitudinal welded pipe is relatively simple. The main production processes include high-frequency welded longitudinal welded pipe and submerged arc welded longitudinal welded pipe. The longitudinal welded pipe has high production efficiency, low cost and rapid development.The strength of spiral welded pipe is generally higher than that of longitudinal welded pipe, and the main production process is submerged arc welding. Spiral steel pipe can produce welded pipe with different pipe diameters with billet of the same width, and can also produce welded pipe with larger pipe diameters with narrow billet.However, compared with longitudinal seam tubes of the same length, the weld length increases by 30-100%, and the production speed is lower.Therefore, the welding pipe with smaller diameter mostly adopts longitudinal seam welding, while the welding pipe with larger diameter mostly adopts spiral welding.They have been used in the industry production of longitudinal steel tube located at a t-shaped welding technology, the short sections of longitudinal seam steel pipe for docking, the length of the connect accords with the need of engineering, t the probability longitudinal seam welded steel defect is greatly improved, and the t-shaped seam welding residual stress is larger, the stress state of the weld metal are often in a three to increase the possibility of a crack.
Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.
No.92 JieFang East Road ,Cangzhou City, Hebei,P.R.China.
CSPG has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation.
We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel spiral pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.