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Common knowledge of pipe fitting and piping system of

(2) Pipe:this mainly refers to the round pipe, can be divided into welded pipe (straight seam welded pipe, spiral welded pipe) and seamless pipe. Welded pipe (also called seam. Pipe) is usually used for low pressure (20KG/CM2) pipe, which spiral welded pipe is mainly used for large diameter (such as DN400 above) system, therefore, its wall Comparison for spiral pipes and seamless pipe - Sunny SteelSpiral pipe features:straight seam welding tube production process is simple, high production efficiency, low cost. the strength of the spiral welded pipe is usually better than straight seam welding pipe is high, which can use a narrow billet production of larger diameter welded pipe, still can use the same width of the billet production pipe diameter different welded pipe.

Comparison of Straight Seam Steel Pipe and Spiral Steel Pipe

Mar 25, 2021 · The production efficiency of straight seam steel pipes is high, the cost is low, and the economy develops rapidly. The strength design of spiral steel pipes (SSAW) is usually higher than that of straight seam steel pipes. The main content of steel pipe production technology is Difference Between SSAW Steel Pipe And LSAW Steel PipeSSAW steel pipe, whose full name is Straight seam submerged arc welding pipe. Longitudinally Submerged Arc Welded Steel pipes, which is abbreviated as LSAW steel pipe. These two types of pipes only have one letters difference, but they are truly different in their manufacturing process. Besides the manufacturing process, there are also other different aspects of these two types of pipe. ERW Galvanized Steel Tubes, ERW Galvanized Steel pipes Steel Pipes manufacturers and Exports huge range of ERW Galvanized Steel Tubes & Steel Pipes. For pipes or tubes size 4 inch (10.2mm) OD and below, strip is fed into a set of forming rolls which consists of horizontal and vertical rollers so placed as to gradually from the flat strip in to a tube which is then allowed to pass the welding

Longitudinal welded pipe and spiral welded pipe

Nov 02, 2020 · So if a spiral welded pipe is blasted, its blasting hole will not appear in the weld, and its safety is higher than that of a straight seam welded pipe. Welding process comparison In the welding process, the welding of the two is basically close to the same. Perforated Tube Welded in Straight Seam Comparison with Straight line welded perforated tubes are mostly small diameter tubes while spiral wound welded tubes are mainly big diameter pipes. This is a product with high work efficiency widely used in Performance comparison of spiral steel pipe and straight The blasting test also showed that the circumferential deformation rate of the spiral welded pipe blasting hole was significantly greater than that of the straight seam welded pipe. The results show that the plastic deformation ability of spiral welded pipe is better than that of straight seam welded pipe.

Spiral Welded Steel Pipe - articlesfactory

Spiral welded steel pipe is a steel strip coil plate of raw materials, often warm extrusion molding, with automatic double wire welding double-sided submerged arc welding technology with spiral steel pipe. (1) raw material namely strip coil, wire, flux. Have to pass strict physical and chemical inspection before investment. (2) the strip head to tail docking, use single or double wire Spiral submerged arc welding steel pipe and straight seam 50 ~ 60 s, spiral steel pipe has been widely used in the oil and gas pipelines, 70 ~ 80 s by straight seam submerged arc welding steel pipe and the serious challenge of ERW steel pipe, since the world basically is no longer used in oil and gas pipeline spiral steel pipe, and pipe company has many large international oil company are not allowed to use spiral submerged arc welding steel pipe in oil and gas pipelines. This is because the development of pipeline industry reliability of steel What is a SSAW pipe? - pipelinedubaiApr 14, 2019 · The welding process is concerned:a consistent spiral welded pipe and Longitudinal welding, straight seam steel pipe will inevitably have a lot of T-weld, and therefore the probability of the existence of welding defects has greatly improved, and welding residual T welds stress is large, the weld metal are often in three-dimensional stress state, increases the likelihood of cracks. Furthermore,

What is a spiral steel pipe? - pipelinedubai

Jul 24, 2018 · Spiral steel pipe features:straight seam welding pipe production process is simple, high production efficiency, low cost. the strength of the spiral welded pipe is usually better than straight seam welding pipe is high, which can use a narrow billet production of larger diameter welded pipe, still can use the same width of the billet production pipe diameter different welded pipe. What is the difference between spiral pipe and other steel Among the welded pipes, the one with a large diameter will be made into a spiral welded pipe, which is made of steel strip wound, and the weld is also spiral. Among the welded pipes, the smaller diameter can be completed by a combined pipe making unit (including welding and cutting) using strip steel, and the weld is a straight seam. Steel Comparison Of Spiral Steel Pipe, Straight Seam Steel Pipe Dec 04, 2019 · Spiral steel pipe can be used to produce different pipe diameters with blank of the same width, and can also be used to produce larger pipe diameters with narrow blank.However, compared with the straight seam pipe of the same length, the weld length increases by 30~100%, and the production speed is lower.Therefore, the smaller diameter welded pipe mostly used straight seam