Straight seam welded steel pipes include double-sided submerged arc welded straight seam welded steel pipes and high-frequency resistance welding. The English abbreviation is lsaw. The English abbreviation of high-frequency resistance welding is erw. Submerged arc welded straight seam steel pipes are divided into UOE according to their different forming methods. , RBE, JCOE steel pipes, etc. The materials of straight seam welded steel pipes mainly include pipeline steel series such as Q195, Q215, Q345 and x42. Straight seam welded steel pipes are divided into two types: ordinary steel pipes and thickened steel pipes according to the specified wall thickness. Steel pipes are divided into two types: threaded and non-threaded according to the shape of the pipe end. The length of straight seam welded steel pipes is mainly divided into fixed length and variable length. This is mainly based on the customer's requirements. The length is generally 6-14 meters. Large diameter straight seam welded steel pipes may require two steel plates for rolling, which also forms a double welds.
The specifications of straight seam welded steel pipes are expressed by nominal diameter and wall thickness. According to wall thickness, they can be divided into two types: thin-walled straight seam pipes and thick-walled straight seam pipes. According to the shape, it can be divided into round, square or special-shaped tubes. The main implementation standards are GB/T3091-2008 and GB/T9711-2008.
Usage: Steel pipes are used for various structural parts, parts and fluid transmission pipelines as well as electric welded steel pipes for other purposes.
