... well type quenching & tempering furnace continuous intermediate frequency quenching production line, C61160*16m lathe, CW6180*18m lathe, CQ61100 lathe, ... round bars such as cold roller, corrugated roller and pipe die of mould-die, motor shaft, marine quant shaft ... table roller, leveling roller, connecting shaft, motor shaft, pipe casting die, corrugated roller, drill collar and integral blade ...