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High-speed rail support made of straight-seam steel pipe
High-speed railway support straight-seam steel pipes are manufactured by bending steel plates or strips into shape and then welding them together. Based on the weld configuration, they are classified as straight-seam welded pipes and spiral-welded pipes. By application, they further subdivide into ordinary welded pipes, galvanized welded pipes, oxygen‑blowing welded pipes, wire conduit pipes, metric welded pipes, roller‑support pipes, deep‑well pump pipes, automotive pipes, transformer pipes, electric‑welded thin‑walled pipes, electric‑welded special‑shaped pipes, and spiral‑welded pipes.
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In high-rise buildings, because the higher the height, the kinetic energy generated by the greater the water, so the impact of high-rise buildings with the greater. PVC pipe on the market today is not the same as the water supply pipe fittings to withstand high pressure, so vulnerable to the impact of the impact of water damage, at the same time the noise is also the normal life of people working inconvenience .
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Large diameter coil sometimes will be two welds, why does this happen, mainly because of raw material problems and equipment processing problems. Customer requirements of the large diameter pipe width of the steel mills generally do not produce, so we must put two plates for welding, so the emergence of this weld situation.
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Straight seam pipe generally adopt high-frequency welding, high frequency welding is a kind of induction (or contact pressure welding) welding, it need to weld filler, no welding spatter, narrow welding heat affected zone, weld moulding beauty, weld the advantages of good mechanical performance, thus is widely used in steel production. According to the principle of electromagnetic induction and ac charge in the conductor skin effect and proximity effect and eddy current heating effect, make the edge of the weld steel locally heated to a molten state
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