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!

• High-Power Performance: 20kw motor ensures efficient operation.
• Durable Structure: Built for long-term use in hardware bolt nut factories.
• Wide Application: Ideal for manufacturing bolts and nuts across various industries.
• User-Friendly Design: Easy-to-operate interface for smooth production workflow.
• Reliable Warranty: 1-year warranty on key components for peace of mind.

This automatic cold heading machine is professional cold forging equipment designed for mass production of fasteners and precision metal parts. Adopting mature cold forming technology, it completes workpiece head forming at room temperature without heating, which effectively cuts production cost and improves processing efficiency.

The equipment is built with a high-rigidity integral machine body, matched with precision die system and fully automatic wire feeding mechanism. It features stable high-speed operation, high forming dimensional accuracy and low failure rate, supporting continuous uninterrupted production, greatly reducing labor input and ensuring consistent quality of mass-produced products.

It is widely used in fastener manufacturing, automotive hardware, electronic components, construction hardware and other industries, suitable for producing bolts, screws, nuts, rivets, studs and various standard & non-standard special-shaped cold heading parts. We provide full services including pre-sales solution customization, on-site installation guidance and lifelong technical support to match different production demands of customers.

Our RB series multi station cold heading machine is professional cold forging equipment specially designed for mass production of bolts nuts screws rivets and all kinds of standard and special fasteners. With advanced chipless cold forming technology the machine keeps complete metal grain flow of raw materials so finished fasteners own higher tensile strength and fatigue resistance compared with cutting processing which also saves raw material cost without any waste.

Equipped with multi station integrated forming structure the machine can finish multiple forming procedures in one single pass to greatly improve production efficiency and reduce manual operation cost. The whole machine body adopts one piece high grade cast iron with strong rigidity to ensure low vibration and stable running under long time 24 hour continuous working. Core forming molds are made of high wear resistant alloy steel with long service life and easy replacement.

This cold heading machine supports processing multiple metal materials including carbon steel stainless steel copper and aluminum. It can match different production demands of fastener factories hardware plants auto accessory manufacturers and construction hardware suppliers. We provide customized services including die matching voltage adjustment and production line layout design to fit different workshop conditions.

Harbin Rainbow Technology has more than 20 years experience in fastener machinery manufacturing. All machines will pass strict full inspection before delivery. We supply complete after sales service including remote video guidance online technical support and optional on site installation commissioning and worker training. Lifelong spare parts supply and technical consultation are available for all our clients all over the world.

This industrial continuous quenching furnace is professionally designed for the hardening, quenching and tempering heat treatment of metal fasteners (screws, nails, bolts, nuts) and small precision mechanical parts.

Adopting a high-efficiency thermal insulation structure and intelligent digital temperature control system, it ensures stable and uniform temperature inside the furnace, delivers consistent quenching hardness, and effectively reduces workpiece deformation and oxidation decarburization. The furnace body is built with heavy-duty heat-resistant materials and high-quality heating components for long service life and low failure rate.

With a continuous mesh belt conveying structure, the equipment supports uninterrupted mass production, significantly improves processing efficiency and cuts labor costs. It is widely used in fastener manufacturing, hardware processing, auto parts and other industries. Furnace specifications and process parameters can be fully customized according to actual production requirements.

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

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

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

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

This M5 flat die thread rolling machine is professional cold forming equipment designed for high-volume production of small threaded fasteners such as machine screws, self-tapping screws and miniature bolts. It forms complete external threads by extruding metal blanks between two reciprocating flat thread dies, with no cutting chips generated in the process. Compared with traditional thread cutting, it delivers higher thread strength, better surface finish and over 95% material utilization.

The machine features a one-piece cast iron body with outstanding vibration absorption capacity, which guarantees stable operation at full speed and maintains long-term machining precision. It comes standard with an automatic vibratory feeding system that enables continuous unattended production, with a maximum output of 200 pieces per minute, effectively reducing labor input and improving production efficiency.

It is compatible with a wide range of materials including carbon steel, stainless steel, copper, aluminum and alloy steel. The finished threads have accurate pitch, smooth surface and excellent fatigue resistance, making it ideal for fastener factories, electronic hardware manufacturers and automotive parts suppliers. It can be paired with an M5 cold heading machine to form a complete small screw production line, providing a turnkey solution for fastener manufacturing.

This industrial continuous mesh belt furnace is a specially designed continuous heat treatment equipment tailored for mass processing of standard fasteners and automotive precision parts. Adopting advanced multi-zone independent constant temperature control system and sealed atmosphere protection structure, the equipment can stably complete high-precision quenching, carburizing and carbonitriding processes in a continuous production state. The whole production process realizes automatic feeding, constant temperature heating, uniform heat preservation and synchronous discharging, effectively solving the problems of inconsistent hardness, large dimensional deformation and low production efficiency in traditional batch furnace processing. Equipped with high-temperature resistant stainless steel mesh belt and energy-saving fiber furnace lining, the furnace body features stable temperature field, low heat loss and long service life. It supports adjustable mesh belt running speed and customizable furnace chamber size and production capacity, fully adapting to the continuous and large-scale heat treatment production demands of bolts, nuts, screws, chains and various small and medium-sized automotive hardware parts, ensuring consistent product processing quality and greatly improving industrial production efficiency.

This multi-station cold heading machine is fully automatic cold forging equipment for fastener manufacturing. It can complete multiple forming processes in one machine, greatly improving production efficiency and reducing labor cost. The equipment runs stably with low failure rate, adopts precision casting body and high strength crankshaft structure, long service life. It can produce various standard bolts, screws, rivets, nuts and irregular special-shaped hardware without secondary cutting. Suitable for fastener factories, automotive hardware, construction fastener and electronics hardware workshops. We support customized station quantity, die size and production configuration according to customer workpiece requirements. We provide on-site installation guidance and long-term after-sales service.

This multi-station cold heading machine is fully automatic cold forging equipment for fastener manufacturing. It can complete multiple forming processes in one machine, greatly improving production efficiency and reducing labor cost. The equipment runs stably with low failure rate, adopts precision casting body and high strength crankshaft structure, long service life. It can produce various standard bolts, screws, rivets, nuts and irregular special-shaped hardware without secondary cutting. Suitable for fastener factories, automotive hardware, construction fastener and electronics hardware workshops. We support customized station quantity, die size and production configuration according to customer workpiece requirements. We provide on-site installation guidance and long-term after-sales service.

This multi-station cold heading machine is fully automatic cold forging equipment for fastener manufacturing. It can complete multiple forming processes in one machine, greatly improving production efficiency and reducing labor cost. The equipment runs stably with low failure rate, adopts precision casting body and high strength crankshaft structure, long service life. It can produce various standard bolts, screws, rivets, nuts and irregular special-shaped hardware without secondary cutting. Suitable for fastener factories, automotive hardware, construction fastener and electronics hardware workshops. We support customized station quantity, die size and production configuration according to customer workpiece requirements. We provide on-site installation guidance and long-term after-sales service.

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 supplying various fastener equipment to customers around the world, such as bolting machines, nut machines, cold heading machines, thread rolling machines, wire drawing machines, heat treatment furnaces and galvanizing wires, etc.

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.

This two-axis hydraulic thread rolling machine is a professional cold-forming equipment designed for mass production of high-precision threaded fasteners and shaft workpieces. By driving two parallel rolling dies to rotate synchronously, it extrudes the metal blank at room temperature to form complete thread profiles, without cutting off the metal grain structure.

Compared with traditional thread cutting, cold thread rolling significantly improves the surface hardness, fatigue resistance and shear strength of finished threads, while achieving over 99% material utilization and 5-8 times higher production efficiency. The machine supports both infeed rolling for short threads and throughfeed rolling for unlimited-length workpieces, and can also be used for knurling, serration forming and straightening processes by replacing die sets.

The machine body adopts integral cast iron structure with excellent vibration damping performance, ensuring stable operation under high pressure and long-term accuracy retention. The hydraulic feed system is equipped with pressure stabilizing valve and overflow protection, providing smooth and controllable rolling force. The independent spindle tilt adjustment mechanism allows precise setting of thread helix angle, suitable for metric, inch, trapezoidal and special thread profiles.

It is widely used in fastener manufacturing, automotive parts, construction hardware, mechanical transmission and other industries, processing carbon steel, alloy steel, stainless steel, copper and aluminum materials. The whole machine is equipped with overload protection and emergency stop device, and complies with international safety operation standards.

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.

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

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price