Heat treatment, also called thermal treatment, is a method that put materials into troubles performing medium for heating, heat preservation and cooling. Also, it is a kind of technical process to control the performance of materials through changing the structure of fabric surface and interior organize.

• Heat Treatment Production LineJST owns two thermal treatment production lines. We professionally configure tubing, casing, coupling stock, line pipe, drill pipe, national standard underhand boiler pipe, hydraulic prop tube and pressure cylinder tv. They are produced in accordance with API standards for heat treatment work. Your production range of this thermal treatment production line is that certain is with the outer diameter of φ114 mm to 406 mm as well as the length less than or equal to 13.5 m and also the other one is to use the outer diameter of φ48 mm to 180 mm and shorter than or equal to 12.5 m. May vary according to productions of 2 heat treatment line is 150,000 tons and 50,000 tons correspondingly. This production line is also equipped with advanced thermal treatment equipment with temperature difference inside the furnace not extra than 5℃.
• Technological Process of warmth TreatmentTube Warehouse → Quenching and Normalizing Heating → Water Quenching → Tempering Heating → High-pressure Water Descaler → Sizing → Cooling → Straightening → Cooling → Removing Oxide Scale → Inside Surface Inspection of Left Pipe End → Pipe End Inspection →Inside Surface Inspection of Right Pipe End → Pipe Body Inspection → Artificial Outside Surface Inspection → Hydrostatic Test→ Collect and Set into Storage

Technological Features of Thermal Treatment

• Heat treatment is a really important technological process in mechanical manufacturing. In comparison to other processing techniques, it generally doesn't change the form of work piece is actually integrated chemical compound. It can improve the performance by changing the internal microstructure of workpieces or changing the chemical component of the workpiece surface.
• Thermal treatment can reduce the inner quality perform pieces that can not found by naked eyes.
• Heat treatment technology one more inevitable in helping the mechanical property, physical property and chemical property of work pieces.
• Steel is the most well liked material in mechanical industry. It owns complex micro structure and can be controlled by thermal treatment. Besides, aluminum, copper, magnesium, titanium and their alloys can also get new mechanical property, physical property, chemical property and using performance due to heat treatment.