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The difference between ERW steel pipe and LSAW steel pipe

Date:2020-01-04View:799Tags:The difference between ERW steel pipe and LSAW steel pipe
"ERW pipe" is a kind of high-frequency straight seam resistance welded pipe, English abbreviated as resistance welding, or ERW for short. It is used to transport oil, gas and other vapor-liquids that meet the requirements of high and low pressure. It currently holds a significant position in the world of pipelines.



1. Pipeline refers to ordinary "steel submerged arc welding". Electrical engineering uses "SC" to indicate that gas pipelines can be used as threading pipes and are relatively thick.



2. The wire tube is thinner, which is indicated by "T", and can only be used for threading work.



3. The ERW pipe is a "high-frequency resistance welded steel pipe", which is different from the ordinary pipe welding process. The welded base metal is made of steel and has better mechanical strength than ordinary pipes. "Straight seam welded pipe" is the main technology of straight seam welded pipe. Features:



1) During the steel forming process, the steel is uniformly deformed, the residual stress is small, and the surface does not produce scratches. Large range of pipe diameters and pipe diameter sizes for processing steel, great flexibility, especially in the production of high-grade steel thick-walled pipes, especially large-diameter thick-walled pipes have unparalleled advantages of other processes, which can meet users' requirements for steel specifications. More requirements


2) After the first pre-welding of the internal and external welding (fine welding) process, the welding can be performed at the optimal position, which is not prone to misalignment, local and unwelded defects, and the welding is easy to control


3) The overall mechanical expansion can effectively improve the dimensional accuracy of the steel and increase the internal stress of the piping, thereby preventing damage due to stress corrosion and helping the welding construction site; 4 pairs of steel pipe 100% quality inspection, the entire process of steel pipe production is effective Under inspection and monitoring, the product quality is effectively guaranteed; all five production lines of all equipment have computer data acquisition system networking capabilities, and the data is transmitted to the production control room in real time. ”LW welded pipe is parallel to LW welded pipe, LW welded pipe is parallel to LW welded pipe. It is usually divided into metric welded steel pipe, welded thin wall pipe, transformer cooling pipe, etc. The vertical production process is simple, the production efficiency is high, the cost is low, and the development is rapid. .