Product

Steel Tube Process

There are different processing methods or production methods for our seamless steel pipes, including hot rolling, cold rolling or cold drawing, dressing or finishing, upsetting, threading and heat treatment. Established in 1984, Jiangyin Changjiang Steel Tube Making Factory has been engaged in manufacturing seamless pipes for about 30 years. JST seamless steel pipes mainly cover structure pipe, fluid pipe, high pressure boiler pipe, high pressure pipe, API pipe, marine pipe, alloy pipe, tubing, casing, line pipe, etc. They are characterized by pure steel, uniform composition, good-quality inside and outside surface, high dimension precision, uniform wall thickness, good mechanical properties and excellent processing properties. Our seamless pipes (seamless steel tubes or seamless steel pipes) are extensively used in metallurgy, port, ship-breaking, manufacturing, real estate, chemical engineering, transportation and other industries. They are well appreciated for their advanced design, sophisticated manufacturing, excellent quality and full service.

  • Hot RollingHot rolling, also called thermal rolling, means that metal materials are rolled in high temperature. It is especially used for seamless steel pipes because the process needs less rolling force. In addition, we also provide other processing techniques, such as cold rolling or cold drawing...
  • Cold Rolling Cold rolling means that metal materials are rolled in low temperature. Before cold drawing, we will do acid-pickling, phosphating and saponification for hollow billet. Acid-pickling, also named as acid cleaning, is a method of cleaning the metal surface and removing...
  • DressingIn order to meet customers' requirements of dimension and quality, we also do reprocessing of our seamless steel pipes. Pipe dressing is just a reprocessing procedure to make rolled products to meet the specific performance and requirements of technical conditions...
  • UpsettingSteel p ipe upsetting, also called steel tube upsetting, is a procedure to use pressure to shorten the billet height and enlarge the diameter (lateral dimension). It is the basic forming method in the plastic forming procedure. After this process, our steel pipes acquire high strength and long service life...
  • ThreadingTube threading must have a certain thread form, dimension precision and roughness, so that it can realize tight junction after adopting high-class thread compound and tightened by the fasten machine. Pipe threading should be in right-handed rotation and be in accordance...
  • Heat TreatmentHeat treatment, also called thermal treatment, is a process that put materials into a certain medium for heating, heat preservation and cooling. It is also a kind of technical process to control the performance of materials through changing the structure of material surface ...
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