Production process of submerged arc welded steel pipe
Submerged arc welded steel pipe is a steel pipe produced by submerged arc welding process. Its production process mainly includes the following steps:
1) Steel plate pretreatment: First, the raw steel plate is subjected to pretreatment such as cutting, leveling, and cleaning to ensure the surface finish and flatness of the steel plate.
2) Hemming forming: the pretreated steel plate is rolled into a circle or square by a hemming machine, and then welded.
3) Internal welding: The steel plate rolled into a circle or square is internally welded, that is, submerged arc welding is performed inside the steel pipe to ensure the quality of the weld inside the steel pipe.
4) External welding: The steel pipe that has been internally welded is subjected to external welding, that is, submerged arc welding is performed on the outside of the steel pipe to ensure the quality of the weld seam on the outside of the steel pipe.
5) Straightening: Straighten the welded steel pipe to ensure the straightness and appearance quality of the steel pipe.
6) Cutting: Cut the straightened steel pipe to make a steel pipe of the required length.
High performance characteristics of submerged arc welded steel pipe
1) High strength: We cooperate with large steel mills and use high-quality steel plate materials to produce submerged arc welded steel pipes that can withstand large pressure and weight and are suitable for various heavy-duty environments.
2) High quality weld seam: The advanced submerged arc welding process and equipment are used to make the weld seam quality of the submerged arc welded steel pipe produced by it high, which can meet various high-demand application scenarios.
3) Long life: It can maintain stable performance and appearance quality in long-term use.
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