The production process of high-frequency welded pipe mainly depends on the variety of products. From raw materials to finished products needs to go through a series of processes, and the completion of these processes requires a variety of mechanical equipment and welding, electrical control, detection devices. These equipment and installation in accordance with the different process requirements a variety of reasonable layout.
Taking ERW steel pipe as an example, typical production process of high frequency welded pipe is shown below:
Uncoiling - Leveling - End cutting - End shearing and butt welding - Spiral loop/accumulator - Edge cutting/Edge milling - Ultrasonic detection - Forming - High frequency welding + Burr removing - Welding seam ultrasonic detection (offline online) + Metallographic examination - Medium frequency heat treatment - Air cooling - Water cooling - Sizing - Fly cutting - Flush out - Cutting/Cropping - Flattening testing - Straightening - End facing and bevelling - Hydrostatic testing- Ultrasonic detection for welded seam and pipe end - Marking and coating - Finished product
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