RTW series supporting roller mesh-belt type heat treatment production line consists of quenching and heating furnace, quenching tank, cleaning machine, tempering furnace, etc. The production line can be customized. By adopting non-muffle supporting roller mesh-belt structure, this production line can save 20 percent of the energy compared with the traditional mesh belt furnace. Under the driving of supporting roller, the mesh belt moves with the supporting rollers synchronously, its service life can be prolonged for more than half a year. The transformer and radiant tubes equipped in the production line have long service life and are convenient for maintenance. The modularized temperature control system and non-contact control technology are adopted to realize steady heating. The drive of mesh belt is controlled through the imported frequency convertor, its speed can be adjusted steplessly, and the process time can be displayed directly, the operation is convenient and visualized. The computer can be chosen to control the temperature, electrical system and the atmosphere of the furnace. RTW series supporting roller mesh-belt type heat treatment production line is suitable for slight deformation bright hardening or shallow carburizing process of various mid to small-sized parts treated in batches.