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 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 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.

high quality hydraulic forging press bolt making machine power hammer cold forging machine

Place of Origin: China
Application: Machinery & Hardware & Others
Condition: New
Video outgoing-inspection: Provided
Machinery Test Report: Provided
Marketing Type: Ordinary Product
Warranty of core components: One Year
Brand Name: Rainbow
Voltage: 380V
Warranty: One Year
Applicable Industries: Manufacturing Plant, Machinery Repair Shops, Other.
Packaging Details: Plywood Cases

high quality hydraulic forging press bolt making machine power hammer cold forging machine

Place of Origin: China
Application: Machinery & Hardware & Others
Condition: New
Video outgoing-inspection: Provided
Machinery Test Report: Provided
Marketing Type: Ordinary Product
Warranty of core components: One Year
Brand Name: Rainbow
Voltage: 380V
Warranty: One Year
Applicable Industries: Manufacturing Plant, Machinery Repair Shops, Other.
Packaging Details: Plywood Cases

Trimetal Composite Contact Cold Header can make six different metals be compounded together under cold state to produce composite contacts according to the technique requirements. Its working process includes the following steps: Sending two different kinds of metal wire into the machine firstly, transmitting them into the mould after being cut off. Then by two times upsetting process, the two kinds of metal become the composite contacts. Finally, the products retreat from the mould and enter into the finished product box.

• High-Speed Operation: Produces up to 100 sets per month for efficient production.
• Durable Construction: Built for long-term use in construction workshops.
• Flat Die Design: Ensures precise thread rolling for screws and bolts.
• Customizable Options: Offers flexibility for various screw and bolt sizes.
• Reliable Warranty: One-year warranty for peace of mind.

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 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.

High speed nut former, nut making machine,nut forging machine to make hex,flange, nylock nut and special nut parts.

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 Electroplating 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.

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 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!

Harbin Rainbow Technology Co. , Ltd comes from China National Machinery Import and Export Corp. Harbin branch. The main business is manufacturing cold forging machine, Bolt Maker, Nut Maker, Part Former, Screw Heading Machine, Thread Rolling Machine, Wire Drawing Machine and Mesh Belt Furnace, Zinc plating plant. etc. We have our own factories in China, so you don't have to worry about the source of goods.

Harbin Rainbow Technology Co. , Ltd comes from China National Machinery Import and Export Corp. Harbin branch. The main business is manufacturing cold forging machine, Bolt Maker, Nut Maker, Part Former, Screw Heading Machine, Thread Rolling Machine, Wire Drawing Machine and Mesh Belt Furnace, Zinc plating plant. etc. We have our own factories in China, so you don't have to worry about the source of goods.

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.

The nylon nut washer inserting machine produced by Rainbow is suitable for Nylon Lock Nut, Anti-Loosing Nut etc. we have big share in domestic market,...

We have so many different machines, for example,thread rolling machine, nut tapping machine,heading machine, zinc coating machine screw making machine and so on. Same as you want in stock , and we are a long-term supply chain of the store you were noticing . We have our own factory so we can have a long term cooperation with you. Our prices are also very competitive in the market. We can give you the promise that the product quality is guaranteed.We already have good reputation through foreign countries.Friends who have cooperated with us all can recognized this.

Product Overview

Our two-axis thread rolling machine is a professional heavy-duty cold forming equipment dedicated to high-precision and high-strength thread processing. Adopting advanced two-die synchronous extrusion technology, it forms threads through cold plastic deformation of metal without cutting chips. Compared with traditional thread cutting process, it greatly improves the surface finish, dimensional accuracy, tensile strength and fatigue resistance of finished threads, and is widely used in manufacturing high-grade fasteners and structural parts.

Core Advantages

1. High Precision & Consistent Forming Quality The two-die synchronous rolling structure ensures uniform and stable extrusion force, producing full, smooth and standard thread profile with high pitch accuracy. Batch processed workpieces have excellent consistency, which fully meets the quality requirements of high-strength standard parts and precision mechanical components.
2. Heavy-Duty Rigid Structure, Long Service Life The whole machine adopts integral cast iron fuselage with excellent rigidity and shock absorption performance. It maintains stable operation with low vibration and low noise even under long-time heavy load working conditions, effectively reducing equipment wear and prolonging the service life of both the machine body and thread dies.
3. Intelligent Control, Easy to Operate Equipped with PLC control system and intuitive touch screen interface, operators can easily set and adjust rolling pressure, feeding stroke and production rhythm. Built-in fault self-diagnosis and parameter memory function reduce operation difficulty and downtime, and help improve overall production efficiency.
4. Strong Material & Process Adaptability It is suitable for thread processing of various metal materials including carbon steel, alloy steel, stainless steel, copper and aluminum. By replacing different thread dies, the machine can produce metric threads, inch threads, trapezoidal threads and knurling patterns, satisfying diversified demands for both standard and customized non-standard workpieces.

Application Fields

This two-die thread rolling machine is widely applied in fastener manufacturing, automobile parts, construction machinery, bridge hardware, electric power fittings and other industries. It is an ideal choice for producing high-strength hex bolts, stud bolts, threaded rods, anchor bolts and other high-requirement threaded products.

Service & Support

We provide a 12-month whole-machine warranty, lifelong technical consultation and original spare parts supply. Every machine undergoes strict no-load and load testing before delivery. We offer free remote guidance for installation, debugging and operator training, and on-site service by professional technicians is also available upon request.

Product Overview

Our automatic thread rolling machine is a high-efficiency cold forming equipment specially designed for mass production of threaded fasteners. It can be matched with cold heading machines to form a complete fastener production line, completing precise thread rolling on screws, bolts, studs and other workpieces. Compared with traditional thread cutting process, cold thread rolling significantly improves production efficiency, surface finish and mechanical strength of finished threads, with very low material waste.

Core Advantages

1. High Precision & Stable Forming Quality The machine adopts heavy-duty cast iron fuselage with excellent rigidity, which effectively suppresses vibration during high-speed operation and ensures consistent thread pitch and depth. The thread die is positioned precisely to produce full, smooth and burr-free threads, delivering a high qualification rate for batch production.
2. Fully Automatic Operation, Labor Saving Equipped with a high-performance vibratory bowl feeder, the machine realizes automatic workpiece sorting, feeding and continuous thread rolling. The PLC control system with touch screen allows operators to easily set and adjust production speed, feeding rhythm and other parameters, greatly reducing labor intensity and labor cost.
3. Durable Structure, Low Maintenance Cost Core electrical components are sourced from well-known domestic and international brands for stable performance and long service life. The built-in automatic circulating lubrication and cooling system fully lubricates transmission parts and cools thread dies, effectively prolonging the service life of wearing parts and cutting daily maintenance costs.
4. Strong Process Adaptability It is suitable for processing workpieces made of carbon steel, alloy steel, stainless steel, copper and aluminum. By replacing different thread dies, the machine can produce threads of various specifications and types, meeting the diversified production needs of both standard fasteners and custom non-standard parts.

Application Fields

This thread rolling machine is widely used in fastener manufacturing, hardware processing, auto parts, construction hardware, electronic appliances and other industries. It is an ideal choice for producing machine screws, self-tapping screws, hex bolts, studs, threaded rods and other threaded products.

Service & Support

We provide a 12-month whole-machine warranty, lifelong technical consultation and original spare parts supply. Every machine undergoes full-load running test before delivery. We offer remote guidance for installation, debugging and operator training, and on-site service by professional technicians is also available upon request.