When the used ERW tube mills is used to make welded pipes, the judgement of the qualified quality of the welded pipe depends on the control of the squeeze roller, so the control of the squeeze roller is very important. There are many ways to control the squeeze roll, and "up two next one" is the squeeze roll methods.

The "up two next one" three-roll extrusion method can be said to be the best extrusion method for small pipe diameter welding (steel pipes below 114mm) in the used ERW tube mills. Three-roller independent adjustment, three-roller unified adjustment and overall rotation make the adjustment consistent. The three squeezing rollers each cover nearly 120 degrees, and the diameter and load-bearing capacity of each roller are effectively reduced. Vee length = pipe diameter, which is the most efficient. The upper two rollers effectively fit the edges of the steel strip in an angle form, forming a good squeezing force and controlling the edges of the steel strip. Many disadvantages of the two-roller and the top three-roller are avoided, so it is an ideal welding extrusion device.

The disadvantage is that the technical requirements, processing accuracy requirements and cost are relatively high, and adjustments are more difficult at the same time, which limits the promotion. It is usually used on steel pipe lines with higher requirements.

The above is the method of adjusting the squeeze roll of the used ERW tube mills "up two next one", the next issue will introduce the second method "up one next two". If you need it, you can pay attention to the method in the next issue. At the same time, if you need second-hand welded pipe equipment, please contact us. You only need to inform us of your pipe-making needs, and our company will provide you with second-hand welded pipe equipment that really suits your needs.