1. A variety of inspection of raw materials. Raw materials usually refer to strip, wire, flux and so on. The quality can be guaranteed by strict physical and chemical inspection before the input.
2. The head and tail of the strip is butted with single wire or double wire, and the automatic submerged arc welding is used after the steel pipe is rolled into the steel pipe.
3, the first level agent of Jigang to process the process. Before the molding, the required steel is leveled, trimming and flanging, and the surface is cleaned and conveyed and treated by the curved edge.
4, using the electric contact pressure gauge to control the pressure of the cylinder on both sides of the conveyor to ensure the smooth transportation of the strip.
5. Using external or internal control roll forming.
6, the weld gap control device is used to guarantee the weld gap to meet the welding requirements, and the pipe diameter, the error margin and the weld gap are strictly controlled.
7, both internal and external welding are used for single wire or double wire submerged arc welding by electric welding machine, so as to obtain a stable welding specification.
8. The welding seam is checked by the on-line continuous ultrasonic automatic injury instrument, which ensures the coverage rate of the nondestructive testing of 100% spiral steel tubes. If there are defects, automatic alarm and spray marking, the production workers at any time adjusting the process parameters, in time to eliminate defects.
9, the air plasma cutting machine is used to cut the steel pipe into a single root.
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