Erw Welded Pipe Gr.B Petrochemical Industry Chemical Industry ERW Steel Pipe

ERW, used for transporting oil, natural gas and other vapor liquid objects, can meet the high and low pressure requirements, currently in the world's transportation pipe field occupies a pivotal position.The biggest difference between ERW steel pipe and seamless steel pipe is that ERW has a weld, which is also the key to the quality of ERW steel pipe.Modern ERW steel tube production process and equipment, because of the international, especially the United States and other years of unremitting efforts, so that the seamless ERW steel tube has been a relatively satisfactory solution.Due to the use of hot rolled coil as raw material, the wall thickness of ERW steel pipe can be controlled within ±0.2mm or so, the two ends of the steel pipe are in accordance with the American APL standard or GB/T9711.1 standard, the end is repaired and beveled, and the delivery length is fixed.In recent years, various natural gas pipeline engineering and gas companies have widely adopted ERW steel pipe as the main pipe of urban pipeline network.

RW pipe is "high-frequency resistance welded steel pipe", and the welding process is not the same as the ordinary welded pipe, the weld is melted by the base metal of the steel strip body, the mechanical strength is better than the general welded pipe.ERW stands for resistance welding, resistance welding has high production efficiency, low cost, material saving, easy automation and other characteristics, so it is widely used in aviation, aerospace, energy, electronics, automobile, light industry and other industrial sectors, is one of the important welding process.Modern ERW steel tube production process and equipment, because of the international, especially the United States and other years of unremitting efforts, so that the seamless ERW steel tube has been a relatively satisfactory solution.Someone divides the ERW steel tube seamless into geometric seamless and physical seamless.

Geometric seamlessness is to remove burrs from the inside and outside of the ERW steel tube.Due to the continuous improvement and perfection of the structure of the burr removal system and the cutting tool, the burr removal of large and medium caliber steel tubes has been better handled.