ERW is the abbreviation of Electric Resistance Welding. The steel pipe industry often refers to ERW pipe as resistance welded pipe. erw welded pipe production line can produce high frequency resistance longitudinal welded pipe, square pipe, rectangular pipe, steel sheet pile and other products.
Resistance welding is a kind of pressure welding, where the edge of the weld is heated to the welding temperature and pressure welding is performed on the welded tube of the composite pipe. It is divided into low frequency and high frequency.
Resistance welding has the characteristics of high productivity, low cost, material saving and easy automation. Therefore, it is widely used in aviation, aerospace, energy, electronics, automotive, light industry and other industrial sectors. It is one of the important welding processes. One. It is especially suitable for conveying oil, natural gas and other vapor and liquid objects, and can meet various high and low pressure requirements. At present, it occupies a pivotal position in the world of conveying pipelines.
Uncoiler
Different from the ordinary welded pipe welding process, the weld seam is formed by melting the parent material of the steel strip body, and its mechanical strength is better than ordinary welded pipe. erw pipe and submerged arc welded pipe welding methods are significantly different. The pressure welding method without filler metal is used. The weld seam is not filled with other components.
The skinning and proximity effects of the high-frequency current cause instantaneous heating of the sheet edges. When the welding temperature is reached, the weld seam in forged structures is formed by an extrusion roll. Quality steel pipes require online or offline heat treatment of the weld seam to refine the weld zone structure. The weld seam of quality ERW welded pipe can achieve the same level of toughness as the base material, which cannot be achieved by submerged arc welding.
Pinching & Leveling
The ERW steel pipe production line is formed by extrusion deformation and other means of various metal pipe raw materials (carbon steel, aluminum, stainless steel, non-ferrous metals, etc.) (round pipe, square pipe, shaped pipe, etc.), using resistance welding technology for welding, through the extrusion roller on the welded pipe sizing (making a variety of pipe diameter), through the computer flying saw will be cut into a certain length (according to the required length), to get a complete set of metal pipe Product production equipment.
Production Line includes: Uncoiler, Pinching & Leveling, Shear & Welder, Cutting Saw, Straightening Machine, End-Facing Machine, Hydro Testing Machine, Forming & Sizing Mill, Storing Accumulator, Auto-packing Machine and other equipment. The uncoiler, helping to hold, load and provide strip coils for tube mill, can save our clients from time-consuming & laborious manual coil-loading & unfolding.
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"), computer flying saw CNC machine (also known as "computer flying saw console"), etc.
Let us help you find the best erw steel pipe production line for your project. When you contact us, please provide your detailed requirements. That will help us give you a valid quotation.
