Industry Knowledge

Seamless pipes are used in heavy industry, light industry, daily necessities industry and building decoration industry due to their good corrosion resistance, strong toughness and excellent molding properties. In the market, round steel pipes are the most common, while equilateral triangular, rectangular and square seamless stainless steel pipes also exist.

① The classification of hot rolled seamless stainless steel pipes covers low and medium pressure boiler steel pipes, high pressure boiler steel pipes, general steel pipes, alloy steel pipes and stainless steel pipes. The production process includes: billet preparation, heating, piercing, subcrown treatment, sizing, heat treatment, and then straightening, finishing, inspection and storage of finished pipes.

② Cold working seamless stainless steel pipes mainly rely on cold rolling technology, supplemented by cold drawing. About 65% of the seamless pipes are completed by cold working, which also promotes the progress of cold working equipment. There are three main cold processing methods: cold rolling, cold drawing and the combination of the two Cold drawn seamless stainless steel pipe manufacturing process starts from the outer structure of the billet, and after a series of steps to get the finished product, which has a higher production efficiency, but there are also some disadvantages. On the other hand, the manufacturing process of cold rolled seamless stainless steel pipe begins with steelmaking, and is packaged into storage after a series of treatments, and this method pays special attention to the surface quality of the steel pipe.

③ Hot extrusion seamless stainless steel pipe is a hot process manufacturing method. Compared with the rolling method, the extrusion method produces three-way compressive stress during metal deformation. Under certain optimal conditions, the extrusion method can improve the quality of steel pipes, especially for high-alloy materials. The process of this technology covers several steps, from billet preparation to final packaging for storage.

Huxin mainly uses cold rolling and cold drawing technology to manufacture seamless steel pipes and is equipped with cutting-edge production and inspection equipment. Such as cold rolling machine, cold drawing machine, 12-meter annealing furnace, pickling pool, eddy current ultrasonic integrated machine, a full set of laboratory equipment, and a hydraulic testing machine is even able to reach 630mm outside diameter. From production to final shipment, there is an experienced quality control team for strict monitoring to ensure that each pipe meets the highest standards. Welcome all parties to inquire and consult.