Cangzhou Shuanglong Steel Pipe Co., Ltd. is located in China and specializes in the production of spiral welded steel pipes. We have thirty years of production experience. The large-diameter spiral welded steel pipes we produce are used in long-distance crude oil, natural gas and water transportation projects.

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The manufacturing process of spiral steel pipes is a rigorous and delicate process to ensure that each steel pipe meets high quality standards.
First of all, we select high-quality raw materials and undergo strict inspection and screening to ensure that the performance and quality of the raw materials meet manufacturing requirements.
We then use advanced spiral forming technology to maintain stable shape and size of the steel pipe during the forming process through precise control and adjustment.
Next, the steel pipe will be welded at high temperature to ensure that the quality and strength of the weld meet standard requirements. After welding is completed, we will also conduct comprehensive quality inspections on the steel pipes, including visual inspection, dimensional measurement, pressure testing, etc., to ensure that each steel pipe meets our strict standards.