You'll find 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.

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 in and out of 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 savoir-faire. They are well appreciated for their advanced design, sophisticated manufacturing, excellent quality and full service.

• Hot Rolling Hot rolling, also called thermal rolling, means that metal materials are rolled in warmth. It is especially used for seamless steel pipes because the process needs less rolling push. In addition, we also provide other processing techniques, such as cold rolling or cold drawing...
• Cold RollingCold rolling has changed the world metal materials are rolled in low temperature. Before cold drawing, we is going to do acid-pickling, phosphating and saponification for hollow billet. Acid-pickling, also named as acid cleaning, is an approach of cleaning the metal surface and removing...
• Dressing In order to 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 fulfill the specific performance and requirements of technical conditions...
• Upsetting Steel p ipe upsetting, also called steel tube upsetting, is an operation to use pressure to shorten the billet height and enlarge the diameter (lateral dimension). It will be the basic forming method involving plastic forming procedure. Next process, our steel pipes acquire high strength and long service life...
• Threading Tube threading get 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 as per...
• Heat Treatment Heat treatment, also called thermal treatment, is a process that put materials into any medium for heating, heat preservation and cooling. It is usually a kind of technical process to control the performance of materials through changing the structure of fabric surface ...