SSAW (Spiral Submerged Arc Welding) steel pipe is a steel pipe made through the spiral submerged arc welding process. It has the characteristics of high strength, good pressure resistance and long service life, and is widely used in construction, petroleum, natural gas, chemical industry and other fields. The following is an introduction to the production steps and application situations of SSAW steel pipes. Production steps key steps and processes: 1. Use strip steel coils as raw materials, extrusion molding at room temperature, and use automatic double-wire double-sided submerged arc welding technology to weld to form spiral seam steel pipes. 2. Use a weld gap control device to ensure that the weld gap meets the welding requirements, and strictly control the pipe diameter, offset amount and weld gap. 3. Carry out head-to-tail butt jointing of steel strips, using single-wire or double-wire submerged arc welding, and then perform automatic submerged arc welding repair welding after being rolled into steel pipes. 4. The welded seams are inspected by an online continuous ultrasonic automatic flaw detector to ensure non-destructive testing coverage of the spiral welds. If there is a defect, it will automatically alarm and spray mark it. The production workers will adjust the process parameters at any time according to the mark to eliminate the defect in time. 5. Before forming, the strip steel is leveled, trimmed, planed, surface cleaned and pre-bent. 6. Use electric contact pressure gauges to control the pressure of the cylinders on both sides of the conveyor to ensure smooth conveying of strip steel. 7. After being cut into individual steel pipes, each batch of steel pipes must undergo a strict first inspection system, including checking the mechanical properties, chemical composition, fusion status of the welds, the surface quality of the steel pipes, and non-destructive testing to ensure that the pipe making process is qualified. Only then can it be officially put into production. The production process of SSAW steel pipes involves multiple links and requires high-precision equipment and strict process control to ensure that the final product has good quality and performance. API Spec 5L Pipeline Steel Pipe Specification Spiral welded pipe, straight seam submerged arc welded pipe, straight seam high frequency welded pipe GB/T 9711.1-1997 Technical delivery conditions for steel pipes for oil and gas industry Spiral welded pipes, straight seam submerged arc welded pipes, straight seam high frequency welded pipes SY/T 5037-2000 Spiral submerged arc welded steel pipe for low pressure liquid transportation pipeline Spiral welded pipe GB/T 14980-94 Large-diameter electric welded steel pipes for low-pressure fluid transportation Straight seam high-frequency welded pipes GB/T 3092-93 Welded steel pipes for low-pressure fluid transportation Straight seam high-frequency welded pipes GB/T 13793-92 Straight seam resistance welded steel pipes for general fluid transmission pipelines Straight seam high frequency welded pipes GB/T 5384-91 Straight seam resistance welded steel pipes for general fluid transmission pipelines Straight seam high frequency welded pipes To learn more, please visit the website:www.baowi-steel.com