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A large number of second-hand real source, rapid integration of the entire used welded pipe production line. Installation and commissioning services can be provided at home and abroad to ensure the rapid production of qualified steel pipes. 

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Solutions to difficulties in thick-walled pipe forming of directly forming to square pipe mill (1)
Solutions to difficulties in thick-walled pipe forming of directly forming to square pipe mill (1) 查看详情
2023-05-31
Solutions to solve the difficulties in forming thick-walled tubes of directly forming to square pipe mill include special forming unit solutions, rough forming pass solutions, fine forming pass solutions and comprehensive solutions. Let me introduce the solution to the difficult forming of thick-walled tube(1).
Analyzing the roll life of a used ERW tube mill
Analyzing the roll life of a used ERW tube mill 查看详情
2023-05-28
In the production of used ERW tube mills, the roll is the key and important special tool. Roll consumption is also a key tool for manipulating product costs. In addition, the normal operation of the roll will directly affect the output and quality of welded pipe manufacturing. Therefore, welded pipe manufacturers attach great importance to and strive to improve the service life of the roll.
How to extend the service life of high frequency welded pipe equipment
How to extend the service life of high frequency welded pipe equipment 查看详情
2023-05-25
The service life of high frequency welded pipe equipment is of concern to everyone. The contribution made in the welding industry is immeasurable, and the care of it by customers should be paid more attention. So how can the service life of high frequency welded pipe equipment be extended in the actual production process?
Adjusting the welding seam position of square and rectangular pipes made by directly forming to square pipe mill (2)
Adjusting the welding seam position of square and rectangular pipes made by directly forming to square pipe mill (2) 查看详情
2023-05-22
Judging that the quality of the square tube produced by the directly forming to square pipe mill meets the standard is based on a large number of inspection data of the microhardness of the weld and the microhardness of the base material. The former is much higher than the latter. It is for this reason that the weld is usually not placed at a positive angle, but placed within t~(t+5mm) from the corner edge to reduce the risk of weld cracks. This requires effective control of the weld position. Control methods include forming roll method, guide roll method and sizing roll method.
Welding and rolling bottom line and sizing rolling bottom line in high frequency welded pipe machine
Welding and rolling bottom line and sizing rolling bottom line in high frequency welded pipe machine 查看详情
2023-05-19
The rolling line of high frequency welded pipe machine is all rolls on the welded pipe unit, including leveling rolls, forming flat rolls, guide rolls, squeeze rolls, deburring idlers, calendering rolls, sizing rolls, straightening rolls and other rolls. It is also the reference line for the installation and adjustment of related auxiliary equipment such as uncoilers, spiral loopers, flying saws, conveyor rollers, etc. It is the general term for the rolling bottom line and rolling center line, just like the human body. The spine plays a pivotal role in all process parameters of welded pipe production.
The method of detecting the square of the square tube made by the used square tube machines
The method of detecting the square of the square tube made by the used square tube machines 查看详情
2023-05-16
How to adjust the square of the square tube machine in the used square tube machines is to check whether the square tube square is qualified through correct measurement and judgment.
How to adjust the welding process parameters of high frequency welded pipe machine(2)
How to adjust the welding process parameters of high frequency welded pipe machine(2) 查看详情
2023-05-13
There are many factors that affect the welding process of high frequency welded pipe machine: squeeze roller, welded pipe material, welding power and frequency, welding form (induction welding and contact welding), impedance, and V angle of welding area, etc. We will learn in this issue The status and influence of welded pipe material characteristics in welding process in product debugging.
The method of adjusting the r angle of the directly forming to square pipe mill when making pipes
The method of adjusting the r angle of the directly forming to square pipe mill when making pipes 查看详情
2023-05-10
When the square tube is manufactured by the directly forming to square pipe mill, the r-angle symmetry and the same size of the square tube are important conditions to measure the external beauty of the square tube, and it also affects the subsequent assembly requirements of the finished tube tooling.
Common surface defects of welded pipes in used welded pipe machine manufacturing - pipe surface scars
Common surface defects of welded pipes in used welded pipe machine manufacturing - pipe surface scars 查看详情
2023-05-07
Pipe surface scars are common defects in the production of used welded pipe machine, with specific manifestations such as crushing, indentation and scratches.

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