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High frequency straight seam welded pipe
- Product Description
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Product Information
High frequency straight seam welded steel pipe (ERW high frequency straight seam resistance welded steel pipe) is a kind of steel pipe welded by skin effect and proximity effect of high frequency current, which has the following characteristics and advantages:
1. Fast welding speed: high-frequency current can heat the edge of the tube blank in a very short time to achieve rapid welding and improve production efficiency.
2. Small heat-affected zone: Since the welding process is completed instantaneously at high speed, a relatively small heat-affected zone contributes to the mechanical properties of the material.
3. Weldable thin-walled tubes and metal tubes: High-frequency welding technology is suitable for welding thin-walled and metal tubes, expanding its application range.
4. No weld filler: High frequency welding is a kind of induction welding without weld filler, which reduces the material consumption and cost in the welding process.
5. No welding: Due to the special principle of high frequency welding, the welding process will hardly produce welding neatness.
6. Beautiful appearance and good mechanical properties: welding, beautiful forming and good mechanical properties are required by various applications.
7. Wide range of applications: widely used in civil construction, petrochemical, light industry and other fields, used in various engineering components and light industrial products.
The production process of high frequency straight seam welded steel pipe usually includes rolling forming, high frequency welding, cooling, sizing, flying saw cutting and other steps. Using the skin effect and proximity effect of alternating current, the edge of the tube blank is heated and melted, and the pressure welding is carried out under the action of the roller to form a firm butt weld.
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