It is mainly used in the oil and gas industry to transport flammable and non-flammable fluids and steel structures.

After the spiral steel pipe rusts, the steel surface is mainly polished by tools such as wire brushes. The cleaning and preheating of the spiral pipe can remove loose or upturned oxide skin, rust, welding slag, etc. The derusting of hand tools can reach Sa2 level, and that of power tools can reach Sa3. If the surface of spiral pipe is firmly attached with iron oxide scale, the derusting effect of tools is not ideal, and the depth of anchor pattern required by anti-corrosion construction cannot be reached.

Spiral steel pipe market demand is both rapid and not chaotic growth trend will not fundamentally change. Whether the spiral steel pipe market can maintain the rapid development of the hub depends on the change of demand. The macro-economy is regulated at the policy level, which will slow down the market growth rate in the future.

Spiral steel pipe is a spiral seam steel pipe welded by automatic double-wire double-sided submerged arc welding process. The spiral steel pipe sends the strip steel to the welded pipe unit, and after rolling by multiple rollers, the strip steel is gradually rolled up to form a round pipe blank with an opening gap. Adjust the pressing amount of the squeezing roller to control the weld gap at 1~3mm, and make the two ends of the welded joint flush.

Spraying (throwing) rust removal is driven by a high-power motor to twist the spraying (throwing) blade at a high speed, so that abrasives such as steel grit, steel shot, iron wire segments, minerals and the like can spray (throw) the appearance of the steel pipe under the effect of centrifugal force, which can not only completely eliminate rust, oxides and dirt, but also achieve the required average roughness under the effect of abrasive fierce impact and friction.

Spiral pipe is mainly used for oil and natural gas pipelines, and its specifications are expressed by outer diameter * wall thickness. The spiral pipe has single-sided welding and double-sided welding. The welded pipe shall ensure that the hydraulic test, the tensile strength and cold bending performance of the weld meet the requirements.