Heat Treatment Mill

JST has two heat treatment lines, of which the main equipment are quenching furnace and tempering furnace. They can process 150,000 tons of steel pipes with the outer diameter of Φ114 mm to 406 mm (Length is equal to or less than 13.5 m) and 50,000 tons of steel tubes with the outer diameter of Φ48 mm to180 mm (Length is equal to or less than 12.5 m).

Advanced heat treatment equipment is equipped with inner and outer spray cooling system to ensure uniform water quenching cooling of steel pipes (Difference is equal to or less than 5℃). Two sets of Siemens electronic-control 6-roller straightening machines guarantee the straightness of steel tubes after heat treatment.

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