In order to improve the service life of seamless pipes or welded pipes, steel pipe manufacturers often choose to galvanize steel pipes. There are two types of galvanized pipes: hot-dip galvanizing and electric galvanizing. Hot-dip galvanizing has a thick galvanized layer, which has the advantages of uniform coating, strong adhesion, and long service life. The cost of electro-galvanizing is low, the surface is not very smooth, and its corrosion resistance is much worse than that of hot-dip galvanized pipes.
Read moreOxygen blowing pipes are used for steelmaking oxygen blowing pipes. Generally, small-diameter welded steel pipes are used, and the specifications range from 3/8 inch to 2 inch.
Read moreGeological pipe is a steel pipe used for core drilling by geological departments. It is a type of seamless pipe. It is a steel pipe with a hollow section and no seams around it. According to the application, it can be divided into drill pipe, drill collar, core pipe, casing and sedimentation pipe, etc.
Read moreCold-drawn pipe is a kind of steel pipe, that is, it is classified according to different production processes, which is different from hot-rolled (expanded) pipes. It is processed by multi-pass cold drawing in the process of expanding the diameter of the blank or raw tube, usually on a single-chain or double-chain cold drawing machine.
Read morePipeline transportation engineering Construction of pipelines for transporting oil products, natural gas and solid slurry. Including pipeline line engineering, station depot engineering and pipeline ancillary engineering. In a broad sense, pipeline engineering also includes the supply of equipment and equipment.
Read moreThe production process of large-diameter thick-walled steel pipe generally includes hot rolling, hot coiling, casting and other production methods. Large-diameter thick-walled steel pipes are mostly produced in double-sided submerged arc welding (SSAW pipe). After bending, jointing, internal welding, external welding, straightening, and flattening, the products meet the standards of the American Petroleum Institute.
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