Carbon steel square pipe welding machine production line

In the field of metal processing, carbon steel square tubes are widely used in building structures, mechanical manufacturing, furniture production and other fields due to their high strength, low cost and easy processing. The carbon steel square tube welding machine production line is the key equipment for achieving large-scale and automated production of such products.
The carbon steel square pipe welding machine production line is an automated equipment integrating uncoiling, forming, welding, sizing and cutting, specially designed for the continuous production of carbon steel square or rectangular pipes. The core objective is to efficiently transform carbon steel strips into high-precision and high-strength square tube products through high-frequency welding technology, meeting the strict requirements of the industrial field for the consistency of pipe size, weld strength and surface quality. Uncoiler ‌ : used for uncoiling carbon steel strip to ensure continuous stable supply. Straightening machine ‌ : Through multi-roll straightening technology to eliminate the crimping stress of the strip, ensure the flatness of the material, lay the foundation for subsequent forming.
The progressive roll forming process is adopted, where multiple sets of precision rolls gradually bend the straight carbon steel strip into a closed square tube blank. The forming process requires precise control of the Angle and pressure of the rolls to avoid material deformation or surface damage.
Through the skin effect generated by high-frequency current, the edge of the tube blank is instantly heated to a molten state, and filler-free welding is achieved under the pressure of the extrusion roller. High-frequency welding has the advantages of high speed (up to 120 meters per minute) and high weld strength (up to over 90% of the base material). Sizing machine ‌ : Cool and set the welded pipe to ensure the accuracy of the section size (tolerance can be controlled within ±0.1mm). Straightening machine ‌ : Eliminate the deviation of pipe straightness by multi-directional rolling, improve the straightness of finished products. By using fly saws or laser cutting technology, pipes are precisely cut to the preset length, and automated collection is achieved through palletizing devices, reducing manual intervention. The weld seam is dense without pores and has high tensile strength, making it suitable for structural components subjected to high loads. The welding process does not require welding wire, significantly reducing production costs.
The carbon steel square pipe welding machine production line, as a core equipment in modern metal processing, has become an important driving force for the upgrading of the manufacturing industry due to its high efficiency, high precision and high degree of automation. In the future, driven by both technological progress and market demand, such production lines will further empower the steel structure industry and provide a solid guarantee for global infrastructure and industrial development.