1. Mainly use tools such as wire brushes to grind the surface of the steel. The cleaning and preheat...
The first may be due to the stress of the spiral seam submerged arc welded steel pipe . That is, ...
Metallurgical Properties of Fabrication Materials The raw material of the spiral welded pipe i...
The main features of TPEP anti-corrosion steel pipe are: 1. The anti-corrosion performance of ...
The repair requirements for the shortcomings of spiral steel pipe welds are as follows: The mi...
(1) Before repairing, analyze the causes of defects and propose corresponding repairing measures. ...
Before the steel is hot rolled, heating the raw material not only improves the mental plasticity, re...
There are roughly four types of spiral steel pipes according to their uses: drainage spiral ste...
Spiral steel pipe is made of strip steel through the coiling machine, bending in a spiral direct...
Forged flange production process The forging process generally consists of the follo...
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