Manufacturer of anti-corrosion steel pipes for water supply pipelines

Description :

　　Spiral tubes have guaranteed quality and long service life. When choosing products, people hope to choose those with good quality. Faced with numerous products in the market, it is a difficult problem to choose the right one to compare. The surface of new products is similar, and it is not easy to distinguish the quality of products just by looking at the surface. The selection of a spiral tube is based on its wall thickness, which is related to the properties of the steel and must not be less than the minimum wall thickness required for transportation, loading and unloading, installation, and other processes. Usually, there are no more than four variations in the specifications of steel pipes (including thickness and steel grade), and there is not much difference in the selection of pipe materials. After all, there are only a few required specifications for steel pipes, and there is not much difference in the selection of thick walled pipes. The price is reasonable, and secondly, in terms of welding selection, the welding technology identification method is easy to distinguish, which can be easily identified from the surface. The smoothness and flatness of the welded interface can indicate the quality of the spiral tube. Welding technology requires skilled control by technical personnel. Spiral pipe, also known as spiral steel pipe or spiral welded pipe, is made by rolling low-carbon structural steel or low-alloy structural steel strip into a pipe blank at a certain angle of the spiral line (called forming angle), and then welding the pipe seam together. It can produce large-diameter steel pipes with narrower strip steel. Spiral pipes are mainly used for the transportation of oil and natural gas pipelines, and their specifications are expressed as outer diameter * wall thickness. Spiral pipes can be single-sided welded or double-sided welded. Welded pipes should ensure that the hydrostatic test, tensile strength, and cold bending performance of the weld meet the requirements. The characteristics of spiral steel pipes: The strength of spiral steel pipes is generally higher than that of straight seam welded pipes. They can produce welded pipes with larger diameters using narrower billets, and can also produce welded pipes with different diameters using billets of the same width.

　　The production process of anti-corrosion steel pipes for water supply pipelines can generally be divided into two types: cold drawing and hot rolling. The production process of cold-rolled spiral steel pipes is generally more complex than that of hot rolling. The pipe blank first needs to be rolled by three rolls, and after extrusion, it needs to be tested for sizing. If there is no response crack on the surface, the round pipe needs to be cut by a cutting machine to a length of about one meter. Then enter the annealing process, which requires acid washing with an acidic liquid. During acid washing, attention should be paid to whether there are a large number of bubbles on the surface. If there are a large number of bubbles, it indicates that the quality of the steel pipe does not meet the corresponding standards. Visually, cold-rolled spiral steel pipes are shorter than hot-rolled spiral steel pipes. The wall thickness of cold-rolled spiral steel pipes is generally smaller than that of hot-rolled spiral steel pipes, but the surface looks brighter than thick walled spiral steel pipes, with less roughness on the surface and fewer burrs on the diameter. The delivery status of hot-rolled spiral steel pipes is generally after heat treatment in the hot-rolled state. After quality inspection, hot-rolled spiral steel pipes must undergo strict manual selection by staff. After quality inspection, the surface must be coated with oil, followed by multiple cold drawing experiments. After hot rolling treatment, perforation experiments must be conducted. If the perforation diameter is too large, straightening and correction must be carried out. After straightening, it is transported by the conveying device to the flaw detector for flaw detection experiments. After labeling and specification arrangement, it is placed in the warehouse.

　　Many people only know one thing about double-sided submerged arc welded spiral steel pipes and don't know the other. Its function is really wide coverage, suitable for underground water supply and drainage, underground spraying, positive and negative pressure ventilation, pumping, fire sprinkler and other pipe networks in coal mines. Thermal power plant process water waste residue and return water transportation pipeline. The applicability of water supply pipelines for anti spray and sprinkler systems. Cable protection sleeves for power, communication, highways, etc. Suitable for high-rise building water supply, heating network, water supply engineering, gas transmission, buried water transmission and other pipelines. Process pipelines for transporting corrosive media in industries such as petroleum transportation pipelines, chemical engineering, and printing and dyeing. Anti corrosion engineering for sewage treatment discharge pipes, sewage pipes, and biological tanks. For agricultural irrigation pipes, deep well pipes, drainage pipes and other network applications, it can be said that 3PE anti-corrosion steel pipes are essential in current construction, and we believe that with the extension of technology, they will have even more brilliant achievements in the future.

AfterSalesService :

• Anti corrosion steel pipe for water supply pipeline