Harbin Rainbow Technology Co.,Ltd is 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 Electro plating equipment factory(Wuxi).

We have more than 30 years experiences in supplying all kinds of fastener equipment, such as Bolt Maker, Nut Maker, Cold Heading Machine, Thread Rolling Machine, Wire Drawing Machine, Heat Treatment Furnace and Zinc Plating line, etc. to customers all over the world, With our reputation increasing and our team becoming more professional, we have experienced a significant growth in business during the recent years.

Nowadays, more and more reputed companies compete in a long-term cooperation with us.We abide by the principles of honesty, credibility, and mutual-benefit. Our motto is “ONCE BUSINESS, FOREVER FRIENDS”, we will do our best to serve clients at home and abroad. Due to our top-notch professional knowledge and rich trad experience, we have seen our market developing ability and actual business growth with an increasingly faster pace. We sincerely look forward to working with you. Let's build a great future together!

Rainbow full production of Spring washer making machine. we have all sizes equipment for 3mm, up to above 33mm spring washers.

Harbin Rainbow Technology Co.,Ltd is one of the biggest fastener equipment dealer and manufacturer in China.We have more than 30 years experiences in supplying all kinds of fastener equipment, such as Bolt Maker, Nut Maker, Cold Heading Machine, Thread Rolling Machine, Wire Drawing Machine, Heat Treatment Furnace and Zinc Plating line, etc. to customers all over the world.

Our industrial automatic cold heading machine is professional cold forming equipment designed for high-volume fastener manufacturing. It adopts room-temperature cold extrusion technology to complete head forming, diameter reducing and step shaping, which retains the complete metal fiber structure of workpieces, greatly improving material utilization, production efficiency and mechanical strength of finished products.

Equipped with a precision transmission system and PLC control unit, the machine delivers stable operation, high forming accuracy and excellent batch consistency. It is an ideal production solution for professional fastener factories and hardware manufacturing plants.

Our industrial-grade automatic cold heading machine is professional cold forming equipment dedicated to fastener and metal part manufacturing. It completes head forming, diameter reducing and step shaping through room-temperature cold extrusion, replacing traditional cutting and turning processes. This technology retains the complete metal fiber structure of workpieces, greatly improving material utilization, production efficiency and the mechanical strength of finished products.

Equipped with a precision transmission system and PLC control unit, the machine delivers stable operation, high forming accuracy and excellent batch consistency. It is the ideal production solution for mass manufacturing of standard and non-standard fasteners in professional fastener factories and hardware processing plants.

Our thread rolling machine is a high-efficiency cold forming equipment to create external threads for bolts and screws. It adopts advanced thread rolling dies, realizes cold rolling forming without cutting material. It features high thread precision, smooth surface and high material strength after rolling. Widely used for mass production of standard fasteners. Suitable for various metal raw materials, easy operation d low maintenance cost.

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

CY06Z Thread Rolling Machine 

Model CY06Z
Diameter Range (mm) 3-6
Screw Length (mm) 50/75
Max. Thread Length (mm) 75
Moving Die Size (mm) 90/105/25
Main Motor (KW) 4
Output (Pcs/Min) 160-185
Approx Weight (kg) 1500
Machine Size (L*W*H)(mm) 1800×1500×1700

Harbin Rainbow Technology Co.,Ltd is one of the biggest fastener equipment dealer and manufacturer in China.We have more than 30 years experiences in supplying all kinds of fastener equipment, such as Bolt Maker, Nut Maker, Cold Heading Machine, Thread Rolling Machine, Wire Drawing Machine, Heat Treatment Furnace and Zinc Plating line, etc. to customers all over the world.

Heading Machine
Model RSH10-120
Max. Blank Diameter (mm) 10
Max. Blank Length (mm) 120
Max. Cut off Length (mm) 140
Stroke (mm) 150
Output (Pcs/Min) 50-60
Main Die Diameter (mm) Φ80X160
Punch Die Diameter (1st) (mm) Φ55X150
Punch Die Diameter (2nd) (mm) Φ55X150
Cut off Die Diameter (mm) Φ40X50
Cutter Size (mm) 16X55X115
Main Motor Power (KW) 15HP/11KW
Machine Size (L*W*H) (m) 4.80X1.80X1.70
Approx Weight (Kgs) 8450

Harbin Rainbow Technology Co.,Ltd.---Cold Forging Machine China Factory

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. 

Harbin Rainbow Technology Co.,Ltd is one of the biggest fastener equipment dealer and manufacturer in China.
We have more than 30 years experiences in supplying all kinds of fastener equipment, such as Bolt Maker, Nut Maker, Cold Heading Machine, Thread Rolling Machine, Wire Drawing Machine, Heat Treatment Furnace and Zinc Plating line, etc. to customers all over the world.

Harbin Rainbow Technology Co., Ltd. is one of the largest fastener equipment dealers and manufacturers in China.
We have more than 30 years of experience in providing various types of fastener equipment to customers around the world, such as bolt machines, nut machines, cold heading machines, thread rolling machines, wire drawing machines, heat treatment furnaces, galvanizing wires, etc. world.

Composition entire heat treatment line as follows:
Automatic feeder → → washing machine before
Hardening furnace oil quenching tank → →
Rear wiper steel furnace → →
Electrical control cabinet.
Buyers can flexiblely composition processing lines, due to the different needs

Harbin Rainbow Technology Co.,Ltd is one of the biggest fastener equipment dealer and manufacturer in China.
We have more than 30 years experiences in supplying all kinds of fastener equipment, such as Bolt Maker, Nut Maker, Cold Heading Machine, Thread Rolling Machine, Wire Drawing Machine, Heat Treatment Furnace and Zinc Plating line, etc. to customers all over the world.