1.Pipeline Weld ElectricHeater Introduction In the process of modern pipeline construction, to meet the needs of the project, a large number of new technologies, new equipment, and new materials are adopted. Especially to save the consumption of pipeline steel, high-strength low-alloy materials are required to reduce the wall thickness ofsteel pipes. The first line of the West-East Gas Pipeline Project uses X70 alloy steel pipes with a diameter of 1016mm, while the second line uses X80 alloy steel pipes with a diameter of 1219mm. Due to the widespread application of low-alloy steel pipes in pipeline engineering, higher requirements are placed on the welding process of pipelines. When starting welding, regardless of the ambient temperature, the initial welding temperature of the weld joint must reach 100°C, and during the welding process, the pipe end temperature must be maintained above 80°C. This requires preheating the steel pipe weld joint before welding, and maintaining a qualified interlayer temperature during welding to meet the welding process standards and ensure the welding quality of the steel pipe. The pipe end electric heater independently developed by Zhongrui Electric meets this demand. It can quickly heat up the pipe weld joint within a short allowable time during the process preparation stage. After welding begins, the heating can continue to run simultaneously without affecting any welding operation. Whether using manual, semi-automatic, or automatic assembly line welding processes, it can achieve preheating and maintain the interlayer welding temperature requirements. 2. Product Structure
Note: The above information and technical parameters are compiled and released by Yangzhou Dali Electric Co., Ltd.
