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Large-diameter welded steel pipe production process
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Large-diameter welded steel pipe production process

Threeway Steel Co., Ltd

E-mail: sales@srtsteelpipe.com

Address: 22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC: 410116

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Large-diameter welded steel pipe production process

Update:2022-12-20   View(s):441   Keywords :Large-diameter welded steel pipe production process
Some of the customers will feel puzzled about the large-diameter welded steel pipe production processes. Here let me show the details of the welded steel pipe production. 

1: Conduct physical and chemical inspections of raw materials such as strip steel coils, welding wires, and fluxes.
2: The head-to-tail butt joint of the strip steel adopts single-wire or double-wire submerged arc welding, and automatic submerged arc welding is used for repair welding after being rolled into steel pipes.
3: Before forming, the strip is leveled, trimmed, planed, surface cleaned, transported, and pre-bent.
4: Use the electric contact pressure gauge to control the pressure of the oil cylinders on both sides of the conveyor to ensure the smooth conveying of the strip.
5: Use external control or internal control roll forming.
6: The weld gap control device is used to ensure that the weld gap meets the welding requirements and that the pipe diameter, misalignment, and weld gap are strictly controlled.
7: Both internal and external welding uses an American Lincoln welding machine for single-wire or double-wire submerged arc welding, to obtain stable welding quality.