How to control the verticality, ellipticity, and welding quality of welded steel pipe?

1. Perpendicularity: The docking of the straight pipe section of the coil is a very important part, which requires the accuracy of the coil feeding, the consistency of the caliber, and the automatic adjustment of the roller horizontally. In this way, a good balance can be found. Many factories cannot scale, so they directly use two steel pipes on the ground, and connect a section of pipe on top of the pipe. This is only a temporary method.

2. Welding quality: The current voltage of the submerged arc welding machine should be adjusted smoothly, and the welding wire should be selected according to the size of the groove. The flux needs to be dried and screened before use so that a good product can be welded. If the current is unstable, there will be holes in it, and the surface of the weld is not beautiful like a sugar gourd. The flux is not dried and screened, and the welded steel pipe will have many pores.

Three, ellipticity: the control of roundness is in the weld because the material and strength of the heating weld will change, if the pipe is not bent well at the beginning, it will not be qualified, such as good welding will not be finished. Weld bending is a very important part. If the press is specially bent, it will cost about 100 yuan more. It is vital to find a large press for all you need.

Cangzhou Shenlong Pipe mainly produces seamless steel pipe, straight seam steel pipe, and spiral steel pipe, but also can process galvanized, anti-corrosion coating, has more than 20 years of production history, reliable quality, is a qualified supplier of BP oil, Petro China.