Production 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 MoreStraight seam welded steel pipe includes double-sided submerged arc welded longitudinal welded steel pipe (LSAW pipe) and high frequency electric resistance welded pipes (ERW pipe). The length of straight seam welded steel pipe is mainly divided into fixed length and indefinite length. This is mainly according to customer requirements. The length is generally 6-14 meters. Large diameter straight seam…
Read MoreFor plasma cutting of spiral steel pipe (ssaw), the difficulty of dust removal is: 1. When the nozzle of the plasma gun is cutting, the air is blown out in two opposite directions at the same time, so that the smoke and dust emerge from both ends of the steel pipe, and the suction port installed in one direction…
Read MoreSeamless steel pipe VS welded steel pipe: 1. Seamless steel pipe is a kind of strip steel with no joints around and a hollow section, which is widely used as a pipeline for conveying fluids. Compared with solid steel, it is lighter in weight with the same bending and torsional strength. It is an economical section steel and is…
Read MoreWeld leveling of straight seam steel pipe (lsaw/erw): Due to the impact of the welding current and the influence of gravity, the internal weld of the pipe will protrude, and the external weld will also sag. If these problems are used in an ordinary low-pressure fluid environment, they will not be affected. If it is used in high temperature,…
Read MoreComparison of ERW pipe and seamless pipe (SMLS): (1) Superior tube blank quality Compared with the tube blank of SMLS steel pipe, the design of chemical composition of high frequency welded pipe (ERW) is more scientific and reasonable. ERW special steel grades are characterized by high purity. Through de-S, de-P, degassing, Ca treatment and other methods, the content of…
Read MoreThe welding process of high-frequency welded steel pipe (erw) is carried out under the condition of fast heating rate and high cooling rate. The rapid temperature change causes a certain welding stress, and the structure of the weld also changes. The structure in the welding center area along the weld is Low-carbon martensite and small area of free ferrite;…
Read MoreStraight seam welded pipe: a steel pipe with the weld seam parallel to the longitudinal direction of the steel pipe. According to the forming process, it is divided into high frequency straight seam steel pipe (erw pipe) and submerged arc welded straight seam steel pipe (lsaw pipe). 1. Construction preparation before use of straight seam welded pipe The pipeline…
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.
