ERW LSAW SSAW Welded Ss400 Steel Pipe Tube Our non-standard cold drawn pipes are made from hot rolled round tubes. The cold drawing process changes mechanical properties of tubes and reducing the cost and time of machining process. China Manufacturer for Lsaw Welded Steel Pipe - SSAW Spiral steel pipe was made by steel ciol, extrusion forming under the normal temperature, take the technology of double wire and double-faced submerged-arc welded. Spiral steel pipe was mainly used in public waterworks, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction etc.
"LSAW steel pipe" is a straight seam submerged arc welded steel pipe. Its main process features are:1. In the process of steel pipe forming, the steel plate is uniformly deformed, the residual stress is small, and the surface is not scratched. Difference Between LSAW and ERW Steel PipesIt is usually divided into metric welded steel pipes, welded thin-walled pipes, transformer cooling oil pipes and so on. The production process of straight seam welded pipe is simple, the production efficiency is high, the cost is low, and the development is fast. "ERW steel pipe" is a high-frequency straight seam resistance welded pipe. The Difference between ERW Pipes, SSAW Pipes and LSAW Pipes Electric Resistance Welding (ERW) pipes have two kinds of welding, induction welding and contact welding. The ERW pipe applied wide hot rolling steel profile as raw material, and went through pre-bending, continuous forming, welding, straightening, cutting and other processes. The pipe has short weld joints, high dimensional accuracy, uniform thickness, and excellent surface and can bear high pressure.
High frequency welding (HFW) steel pipe is that ERW pipe produced with a welding current frequency equal to or greater than 70 kHZ. Through high-frequency current welding resistance, the heat generated in the contact objects, so the objected surface are heated to the plastic state, then with or without forging to achieve a combination of steels. Differences between High Frequency Resistance Welded Pipe Electric Resistance Welded (ERW) Pipe Manufacturing Process. Electric resistance welding ( ERW Pipe ) is used to transport oil, natural gas and other vapor and liquid objects, which can meet various requirements of high and low pressure, and currently occupies a pivotal position in the field of transportation pipes in the world. ERW LSAW welded steel pipe high - S355j2 Steel PlatesAPI 5L Welded (ERW, LSAW, SSAW) Steel Line Pipe. Octal supply API 5L welded (ERW, EFW, LSAW, SSAW) steel line pipe in Gr B, X42, X46, X52, X56, X60, X65, X70, X80 PSL1, PSL2 and for sour service (NACE pipe).Line pipe brief introduction. API 5L steel line pipe is for oil and gas industries pipelines, developed for different working environments.[plate]Difference between ERW, SSAW, LSAW
erw, dsaw, lsaw, ssaw steel pipe . welded steel pipe:erw, dsaw, lsaw, ssaw . home; products; welded steel pipe; erw, dsaw, lsaw, ssa LSAW Welded Steel Pipe Features and Manufacturing Process7. Outside Weld:Outside weld is the tandem multi-wire submerged arc welding on the outer part of the LSAW steel pipe welding. 8. Ultrasonic Testing:Outside and inside of the straight seam welded steel pipe and both sides of the base material are welded with 100% inspection. 9. Longitudinally Submerged Arc Welded Steel pipes, LSAW PipesMainly as a field gathering pipe and internal high-pressure natural gas pipeline of small-caliber, long-distance pipelines for oil and gas a small number, the vast majority of long-distance pipeline is the use of high-frequency straight seam welded pipe (ERW), spiral submerged arc welded pipe (SSAW), LSAW steel pipe (LSAW) three.
The advantages:compared with SSAW steel pipe, ERW pipe has high dimensional accuracy, uniform wall thickness, good surface quality, high pressure resistant performance etc. But ERW steel pipe can be only used in production of small diameter thin wall pipe, which is widely used in fields of gas and crude oil transportation in the city. The difference between straight seam welded pipe and Welded steel pipes are divided into straight seam welded pipes (ERW Steel Pipe) and spiral welded pipes according to the form of welds. Straight seam welded pipe has simple production process, high production efficiency, low cost and rapid development. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes. The difference between straight seam welded pipe and Welded steel pipes are divided into straight seam welded pipes (ERW Steel Pipe) and spiral welded pipes according to the form of welds. Straight seam welded pipe has simple production process, high production efficiency, low cost and rapid development. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes.
Steel pipe for pipe technology, can be divided into (SML), mainly as the Oilfield internal transportation pipeline and small-diameter high-pressure natural gas pipeline, used for a small number of long-distance gas pipeline, the vast majority of long-distance pipeline with Direct seam high frequency (ERW), spiral submerged arc (SSAW), LSAW What are differences between SAW pipes and ERW pipes Whereas LSAW pipes are used for medium to high-pressure services.SSAW pipes are less costly compared to LSAW pipe. ERW steel pipe manufacturing method:When ERW steel pipe welding process, two electrodes, usually made from copper, are used to apply pressure and current. The electrodes are disc shaped and rotate as the material passes between them. The Difference and Use of ERW, LSAW and SSAW Steel PipeStraight seam submerged arc (LSAW steel pipe) is produced by using a single medium-thick plate as the raw material, pressing (rolling) the steel plate in a mold or forming machine, using double-sided submerged arc welding and expanding the diameter. The finished product has a wide range of specifications, good toughness, plasticity, uniformity and compactness of the weld, and has the advantages of large pipe