Screw making machines are designed to produce screws of various types and sizes. They often integrate cold forging and threading processes.Cold heading machine makes the screw head. Thread rolling machine makes the screw thread. Some screws need screw drilling machine to make the screw tail.

Harbin Rainbow Technology Co.,Ltd.--One of the biggest fastener equipment dealer and manufacturer in China. We have invested one Cold former factory (NINGBO), one Thread rolling machine factory(NINGBO), one Heat treatment furnace factory (SUQIAN) and one Electroplating equipment factory(WUXI). 

We have more than 30 years experiences in supplying all kinds of fastener equipment, such as Screw Making Machine, Bolt Maker, Nut Maker, Cold Heading Machine, Thread Rolling Machine, Cold Forging Machine, Rivet Making Machine, Nail Making Machine, Nut Tapping Machine, Spring Washer Machine, Wire Drawing Machine, Heat Treatment Furnace and Zinc Plating line, etc. to customers all over the world.