Continuous Heat-treatment for Steel Bar, Tie Rod, Bolt, Screw-thread Bar, Pipe, etc Capacity: 18,000t/a(Max.) Processing: Quenching+TemperingCapacity: 18, ... -07, BS 7861-1:2007, GB/T 20065-2006, GB/T 20934-2007, MT 146.2-2002 Steel Bar/Pipe Heat-treatment Processing ...