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News
Spiral steel pipes are subjected to severe physical and chemical
Views: 147 Oct 09 , 2022
Before being put into operation, it has to undergo severe physical and chemical examination. The head and tail of the strip is butt-joined, and single or double wire submerged arc welding is selected, and automatic submerged arc welding is selected to fill in the rolled steel pipe. Before forming, the strip is leveled,...
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Anti-corrosion steel pipes are classified according to different
Views: 166 Sep 30 , 2022
Anti-corrosion steel pipes are classified according to different ways
Anti-corrosion steel pipe refers to the steel pipeline which can effectively prevent or slow down the corrosion phenomenon by chemical or electrochemical reaction during transportation and use after anti-corrosion process processing. According to...
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Classification of anti-corrosion steel pipe's inner wall
Views: 142 Sep 29 , 2022
Anti-corrosion steel pipe refers to the steel pipeline that can effectively prevent or slow down the phenomenon of corrosion by chemical or electrochemical reaction during transportation and use after anti-corrosion process processing. According to China's statistics, the annual domestic steel pipe corrosion direct economic losses of more...
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Application of anti-corrosion steel pipe
Views: 152 Sep 26 , 2022
Rust removal: Use wire brushes and other tools to polish the surface of the steel, which can remove loose or oxidized scale, rust, welding slag, etc. Derusting things by hand can reach Sa2 level. The fire-fighting water supply plastic-coated composite steel pipe has passed a high-temperature continuous burning test experiment, and it...
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Spiral steel pipe stacking principle requirements
Views: 161 Sep 24 , 2022
Spiral steel pipe stacking principle requirements
1. The principle requirement of spiral steel pipe stacking is to stack according to varieties and specifications under the premise of stable stacking and ensuring safety. Different varieties of materials should be stacked separately to prevent muddling and mutual...
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How to stack spiral steel pipes correctly
Views: 171 Sep 22 , 2022
How to stack spiral steel pipes correctly
The spiral steel pipes produced by the spiral steel pipe factory are generally produced in large quantities, and the production specifications are various. How should the produced spiral steel pipes be stacked? Correctly stacking the spiral steel pipe is conducive to protecting the...
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Spiral steel pipe dredging common problems
Views: 151 Sep 21 , 2022
Spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, often warmly extruded, and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe feeds the strip into the welded pipe unit. After rolling by multiple rollers, the strip is gradually rolled up to form a...
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Will the use of the spiral steel pipe be affected after repair?
Views: 132 Sep 19 , 2022
Will the use of the spiral steel pipe be affected after repair?
In practice, such a situation often occurs. Although the worn spiral steel pipe has been repaired and restored to its original size, shape and matching properties, the equipment still cannot reach the original technical performance after assembly. Usually,...
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Spiral steel pipe welding quality standard
Views: 139 Sep 14 , 2022
Spiral steel pipe is a spiral seam steel pipe made of strip steel coil as raw material, often warmly extruded, and welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe feeds the strip into the welded pipe unit. After rolling by multiple rollers, the strip is gradually rolled up to form a...
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What happens to the hardness of seamless steel pipes after annea
Views: 127 Sep 09 , 2022
What happens to the hardness of seamless steel pipes after annealing? Increase or decrease?
Most of the seamless steel pipes are produced by cold-drawing and hot-rolling processes. Cold-drawn seamless steel pipes are mostly produced by the combined process of cold-drawing and cold-rolling. Cold-drawn steel pipes are more accurate in...
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