The role of ERW pipe

ERW stands for resistance welding. ERW tubes are commonly known in the steel industry as resistance welded tubes. ERW welded pipe line can produce high frequency resistance welded pipe, square pipe, rectangular pipe, steel sheet pile and other products.

Resistance welding is a kind of pressure welding, the weld edge is heated to the welding temperature, the welded pipe of the composite pipe is pressure welding. Low frequency and high frequency.

Different from the welding process of the common welded pipe, the weld is formed by the melting of the base material of the steel belt body, and its mechanical strength is better than that of the common welded pipe. The welding method of ERW pipe and submerged arc welding pipe is obviously different. Press welding without filler metal is used. No other components are filled in the weld.

The shrinkage cavity and proximity effect of high-frequency current can cause transient heating of the plate edge. When the welding temperature is reached, the weld in the forging structure is formed by the extrusion roll. High quality steel tubes require in-line or off-line heat treatment to refine the weld zone structure. High-quality ERW welded pipe welds can achieve the same toughness as the base metal, which cannot be achieved by submerged arc welding.

Explosive remnants of War advantages

Resistance welding is characterized by high production efficiency, low cost, material saving and easy automation. Therefore, it is widely used in aviation, aerospace, energy, electronics, automotive, light industry and other industrial sectors. Is one of the important welding process. Especially suitable for conveying oil, natural gas and other steam and liquid objects, can meet various high and low pressure requirements. At present, it occupies a decisive position in the field of pipeline transportation.

ERW steel pipe production line

ERW steel pipe production line will be all kinds of metal materials by other means (carbon steel, aluminum, stainless steel, nonferrous metal, etc.) extrusion deformation (round tube, square tube, pipe forming, etc.), USES the resistance welding technology in welding, by squeezing roller (making all kinds of pipe diameter) of welded pipe diameter, through the computer flying saw to cut it into a certain length (according to the need of length), Get a complete set of metal pipe products production equipment.

Production line includes: uncoiler, clamping and leveling machine, shearing and welding machine, cutting saw, straightening machine, end face machine, water pressure testing machine, molding and sizing machine, material storage machine, automatic packaging machine and other equipment. The uncoiler helps to accommodate, load and supply reels for pipe mills, freeing our customers from time-consuming manual loading and unwinding of reels.

The related equipment of ERW steel pipe production line is mainly NUMERICAL control cabinet, including: high frequency main cabinet, high frequency frequency conversion cabinet, speed control cabinet (commonly known as "drag plate"), computer NUMERICAL control machine tool of flying saw (also known as "computer flying saw console"), etc.

Let us help you find the best ERW pipeline for your project. Please provide details of your request when you contact us. This will help us to provide you with a valid quotation.

The source is from https://www.zhpipemachinery.com/news-what-is-erw-pipe-used-for.html