With the rapid development of the local economy, construction activities along the pipeline have increased, and various facilities have been built around the pipeline. For the safe operation of pipelines and surrounding facilities, the distance between gas steel pipes and various facilities must meet the requirements of relevant national regulations.

The local standard tube is also called spiral welded tube, which is made by winding the steel strip of low-carbon structural steel or low-alloy structural steel on the tube blank at a certain spiral angle (called forming angle) and welding the tube after sewing. Large-diameter steel pipes can be produced from narrow strip steel, so let's learn what are the functions of the lower standard pipes!

The main difference between spiral welded pipe and longitudinal welded pipe lies in the different welding forms. Spiral welded pipe is a low carbon structural steel or low alloy structural steel strip with a certain helix angle (also known as forming angle) rolled into tube blank, and then welded to make pipe seam. Large diameter steel pipes can be produced from narrow strip steel. Spiral welded pipes are mainly spiral submerged arc welded pipes (SSAW), which are used frequently in the construction of various gas pipelines in China. Its specifications are expressed in "outer diameter * wall thickness. Spiral welded pipe has single-sided welding and double-sided welding. The welded pipe shall ensure that the hydraulic test, tensile strength and cold bending performance of the weld meet the requirements.

Spiral welded pipe is a spiral seam steel pipe with steel coil as raw material, often warm extrusion, bending and forming into a spiral shape, using automatic double-sided submerged arc welding technology for inner seam and outer seam welding. The raw materials are strip coiling, welding wire and flux. The quality and performance of spiral welded pipe shall be determined according to the needs, and different element contents and types shall be matched according to the needs. So, the following together to understand the characteristics of spiral welded pipe!