
Introduction to the Patent of Our Company’s Welding Pipe Mill (5)
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Name: A precision forming rack
Patentee: Shanxi Haina High…

Introduction to the Patent of Our Company’s Welding Pipe Mill (4)
Name: A high-efficiency flat head chamfering machine for large…

Introduction to the Patent of Our Company’s Welding Pipe Mill (3)
Name: offline uncoiling mill
Patentee: Shanxi Haina…

Introduction to the Patent of Our Company’s Welding Pipe Mill (2)
Name: A type of straight seam welded pipe forming machine without…

Introduction to the Patent of Our Company’s Welding Pipe Mill (1)
Name: A three roll rough forming frame
Patent number: ZL202020727890.7
Patentee:…

New technologies for high-frequency straight seam steel pipe mills
In the preparation process, a roll loop storage device was…

Causes of sand holes in spiral steel pipe welds
Spiral steel pipes are formed by bending the strip steel in…

Heat treatment method of welding pipe mill
Quenching process is currently the most widely used welding…

How much do you know about the processing technology of welding pipe mill?
Firstly, to understand the processing technology of the welded…

How to maintain welded pipe mill in daily use?
Many people ask: How to do a good job in the maintenance and…

Advantages of anti-corrosion for welded pipes in welded pipe production lines
In addition to improving the service life of steel pipes through…

Maintenance of high-frequency welded pipe mill
In terms of production efficiency and economic benefits, high-frequency…