Common steel pipes mainly include welded pipes and seamless pipes (SMLS). In the process of engineering construction, appropriate steel pipes will be selected in combination with specific construction conditions, and cost will be the primary factor. Therefore, this paper distinguishes welded steel pipes and seamless steel pipes from the aspects of steel pipe performance, technology and identification methods, hoping…
Read MoreWhat is a straight seam welded pipe? Straight seam welded pipe is a steel pipe with a straight weld seam parallel to the longitudinal direction of the steel pipe, also known as a straight seam steel pipe, which is made by bending a steel plate or strip and then welding the joints. The production process of straight seam welded…
Read MoreSpiral pipe (SSAW) is a spiral seam carbon steel pipe made of strip steel coil as raw material, often warmly extruded, and welded by automatic double-wire double-sided submerged arc welding process. It is mainly used in water supply engineering, petrochemical, chemical, electric power, agricultural Fluid transportation in the fields of irrigation and municipal buildings: water supply, drainage, sewage treatment…
Read MoreCarbon steel welded pipes are mainly divided into three processes: electric resistance welding (ERW), spiral submerged arc welding (SSAW) and straight seam submerged arc welding (LSAW). The carbon steel welded pipes produced by these three processes have their own positioning in the application field because of their different raw materials, forming processes, caliber size and quality. 1. Straight seam…
Read MoreProject location: Kazakhstan Product: Seamless pipe + straight seam welded pipe Standard material: GOST 8732-78 CT.20/ GOST 20295-85 K52, K54 Specifications: 57-820mm Application: transport natural gas inquiry date：2022.08.05 Order date：2022.09.01 Estimated delivery date： 2022.10.20 Estimated arrival date：2022.11.15 In 2022, Xinyue has helped Kazakhstan customers to win more than 10 projects. In September, once again helped the customer to successfully…
Read MoreSurface heat treatment is divided into two categories: one is surface quenching and tempering heat treatment, and the other is chemical heat treatment. Common hardness testing methods are as follows: 1. Surface quenching and tempering heat treatment The surface quenching and tempering heat treatment of seamless steel pipes is usually carried out by induction heating or flame heating. The…
Read MoreThe relationship between welding speed and weld quality should be understood dialectically and cannot be ignored. It is mainly reflected in the heating stage and the crystallization stage. 1. Heating stage Under the condition of high-frequency straight seam welded pipe (erw pipe), the edge of the tube blank is heated from room temperature to the welding temperature. During this…
Read MoreProduction methods Stainless steel tube according to the production method is divided into two categories of stainless seamless pipe and stainless welded pipe, stainless seamless steel pipe can be divided into hot-rolled tube, cold-rolled tube, cold-drawn tube and extrusion pipe, cold drawing, cold rolling is the second Processing; welded pipe is divided into straight seam welded pipe and spiral welded pipe. Section shape…
Read MoreXINYUE STEEL GROUP set up several production bases in Tianjin & Hebei Province, manufacturing ERW Steel Pipe, SSAW Steel Pipe, LSAW Steel Pipe, Seamless Steel Pipe, Scaffolding system and couplers, RHS, SHS, etc.
