1. Automatic orbital welding equipment -arc welding, girth welding, seam welding and so on 2. Welding Robot for OTC brand (made in Japan, and we are the distributor of OTC China) 3. Automation welding solution relates the real requirement of clients
China Longitudinal Seam Steel Pipes, Longitudinal Seam China Longitudinal Seam Steel Pipes manufacturers - Select 2021 high quality Longitudinal Seam Steel Pipes products in best price from certified Chinese Stainless Steel Product, Stainless Steel Material suppliers, wholesalers and factory on Made-in-China
Helical Welded Pipes and Longitudinal Welded Pipes. Welded line pipes enjoy a wide acceptance in oil and gas transporting market for its selection variety and relatively low cost. According to the different welding seams, welded line pipes can be further categorized into two types, the helical welded pipes and longitudinal welded pipes.
Failure Analysis of Premature Corrosion of HF Seam-Welded Mar 02, 2021 · Visual inspection of the failed pipe showed that the rupture is located within the seam weld line, similarly to the case presented in the work , which focused on longitudinal cracks in electric resistance welded (ERW) steel pipes immediately after quenching and tempering processes.As stated by Kaba et al. , the cracks in the quenched and tempered ERW steel pipes could be correlated with
Forming Process of LSAW Steel Pipe (UOE vs JCOE)Dec 04, 2020 · Tips:Straight seam steel pipe is a steel pipe whose weld seam is parallel to the longitudinal direction of the steel pipe. Straight seam steel pipes can be divided into high-frequency straight seam steel pipes (ERW Pipe) and submerged arc welded straight seam steel pipes (LSAW) according to the production process. Straight seam welded pipe has simple production process,
LSAW steel pipe, hot-rolled or cold-rolled steel sheet or steel coil made of steel pipe welding equipment in the straight seam welding are called the straight seam welded pipe. It is cut into strips by a steel strip, and then wrapped into a tubular cold mold. Then a special welder and then a seam welded. Outer weld brightly polished.
LSAW, SSAW, and ERW Pipes Description and ComparisonMay 06, 2020 · LSAW Pipes has two types:Longitudinal (Single or Double Straight-seam Weld, DSAW) and Spiral (also called SSAW, HSAW, or SAWL). What makes DSAW pipes differ from other LSAW pipes is that DSAW have a seam weld in the inside and outside of the pipe, while the latter have a single seam weld on the outer surface, longitudinal or cross sectional.
Longitudinal Submerged Arc Welded Pipe LSAW Pipe LSAW steel pipe, a type of longitudinally welded steel pipe produced by using the double-sided submerged arc welding method. LSAW steel pipe is welded tubular products made out of flat plates that are formed, bent and prepared for welding. LSAW is welded with a straight seam that runs lengthwise across the pipe.
May 25, 2020 · ERW pipes are manufactured using steel coils:the coil is first uncoiled, smoothed, cut, and finally formed into a pipe shape by joining its two extremities by high-frequency electrical welding (HFI & HFW). ERW pipes are available in sizes between ½ inch and 20 inches (12mm to 508mm) and rapidly becoming a popular alternative to seamless pipes, both in terms of price and performance.
The main production process of large - Welded Steel PipeThe main production process of large diameter straight seam welded pipe Longitudinal welded pipes are formed by bending steel plates or steel strips and then welding them. According to the weld form, it is divided into straight seam welded pipe and spiral welded pipe (ssaw steel pipe).
What are the uses of straight seam welded steel pipe?Longitudinal welded pipe, the steel pipe made of hot-rolled or cold-rolled steel plate or steel strip by coil welding is longitudinally welded on the welding equipment, and the pipe obtained is called longitudinal welded pipe. (it is named because the welded joint of steel pipe is in a straight line). LSAW steel pipe and ERW steel pipe are two kinds of Longitudinal welded pipe.
Sep 22, 2020 · Submerged arc longitudinal seam welded pipe is produced by using a single steel plate as raw material, through JCO or UOE forming, submerged arc welding or submerged arc welding combined with other welding processes. Common ones are X70, X80, X120, etc. The diameter of LSAW pipe is 400-1422mm and the wall thickness is 8-44.5mm.Advantages and Disadvantages of ERW, LSAW Steel PipeStraight seam steel pipe is a steel pipe whose weld seam is parallel to the longitudinal direction of the steel pipe. The production process of straight seam steel pipe is simple, with high production efficiency, low cost and rapid development. The strength of spiral welded pipes is generally higher than that of straight seam welded pipes.