There are 3 welding types:ERW (Electric Resistance Welding), LSAW (Longitudinally Submerged Arc Welding), and SSAW (Spirally Submerged Arc Welding) welding types. ERW pipe is a type of Resistance pipe stands apart from welded pipe and DC welded pipe
DSAW pipe, Double Submerged arc welded pipeSpiral steel pipe is a spiral seam steel pipe made of strip steel coils as raw materials, often extruded and formed by automatic double-wire double-sided submerged arc welding. (1) Raw materials are strip steel coils, welding wires, and fluxes. Strict physical and chemical tests are required before investment.
The finished products have larger specifications and the welding joints have excellent ductility, plasticity and good sealing. LSAW pipes have large diameter, thick wall and can withstand high pressure and low temperature. LSAW pipes play a major role in oil and gas pipelines with features of high strength, high quality and long distance.
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.
SSAW Spiral Welded Steel Pipe API 5L X52 PSL1/PSL2SSAW Spiral Welded Steel Pipe API 5L X52 PSL1/PSL2 is mainly used in water supply engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction. SSAW Spiral Welded Steel Pipe API 5L X52 PSL1/PSL2 can be used in liquid transportation:water supply and drainage.
Differently SSAW pipe is spiral welded where the LSAW is longitudinally welded. Manufacturing process is rolling the steel strip, to make the rolling direction have an angle with the direction of the pipe center, forming and welding, so the welding seam is in a spiral line.
Spiral pipe welding automation drives productivityA pipe mill with this design separates pipe forming from final welding, which allows the pipe to be formed and tack welded at very high speeds. As the demand for spiral pipe for the petroleum industry has increased, so has the desire for fabrication systems that can provide shorter weld cycle times, higher throughput, and reduced material
Sturdy, Stainless ssaw spiral welded pipe for Industry Stainless and galvanized ssaw spiral welded pipe for industrial and commercial purposes at . These hot-dipped ssaw spiral welded pipe are ideal for seamless construction uses.
When the spiral submerged arc welded pipe (SSAW) is a coiled steel pipe, its advancing direction has a forming angle (adjustable) with the centerline of the forming pipe, and the edge is welded while forming. The welding seam is a spiral line. The advantage is that the same specification steel strip can be produced. A variety of diameters of steel pipe, raw material to adapt to a larger range
Types of Oil & Gas Pipes:Seamless, ERW, LSAW Dec 20, 2018 · The two main types of LSAW pipes are the longitudinal (with a single or double straight seam weld, DSAW) and the spiral type (called, HSAW, SSAW or SAWL pipe). Therefore, the difference between DSAW vs. LSAW is that DSAW pipes have a seam weld in the inside and outside of the pipe, whereas LSAW pipes have a single seam weld on the outer surface.
Welded Steel Pipes - Zhangzhou Steel PipesLSAW steel pipes welding line is straight while the SSAW welding line is spiral. LSAW steel pipes length range from 3 meters to 15 meters long. The normal maximum
The general design rules and regulations of long-distance spiral submerged arc for oil and gas pipelines can only be used in category 3 and category 4 areas. LSAW steel pipe :Straight seam submerged arc welded pipe, which is made of a single medium-thick plate by pressing (rolling) the steel plate in a mold or forming machine, using double-sided submerged arc welding and expanding the diameter to produce.