The main methods of surface heat treatment include flame quenching and induction heating heat treatment. Commonly used heat sources include oxygen acetylene, oxypropane, induction current, laser, and electron beam.

Seamless steel tubes are round, square and rectangular steel with hollow section and no welded seam. The tubes are manufactured through an extrusion process where the tube is drawn from a steel ingots or solid tube billet and extruded into a hollow form. Tubing is further shaped hot rolling process, cold rolling process or cold drawing process.

The heat treatment of steel is to change the internal structure of the steel through heating, heat preservation and cooling in a solid state, thereby changing the mechanical properties of the steel. Common heat treatment methods include quenching, tempering, normalizing, annealing, and tempering.

On December 18, 2020, ROCHO INDUCITON provided (10) sets copper pipe brazing systems to an air-conditioning manufacturer in Thailand for the brazing of copper pipes, valves.

ROCHO INDUCTION delivered a new full automatic induction hardening system on December.

An automotive supplier from Mexico has purchased the ROCHO induction hardening system for surface hardening of automotive parts.