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.

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.

Product Overview

Our continuous mesh belt quenching furnace is a professional industrial heat treatment solution specially developed for mass production of fasteners and metal hardware. It is widely matched with cold heading machines and thread rolling machines to form a complete fastener production line, realizing continuous automated quenching, tempering and cooling processes, which greatly improves production efficiency and ensures stable and consistent mechanical properties of finished products.

Core Features & Advantages

1. Precise & Uniform Temperature Control The furnace adopts multi-zone independent PID temperature control system with high-sensitivity thermocouples, which ensures uniform temperature distribution in the furnace chamber, effectively reduces workpiece deformation and unqualified rate, and guarantees stable hardness and strength of batch products.
2. High Energy Efficiency & Low Consumption Lined with high-density aluminum silicate fiber insulation layer, the furnace has excellent heat preservation performance, which reduces heat loss by more than 20% compared with traditional brick furnaces, effectively lowering long-term operation cost.
3. Fully Automatic Intelligent Operation Equipped with PLC control system and touch screen human-machine interface, parameters such as heating temperature, mesh belt running speed and production rhythm can be preset, monitored and adjusted in real time. The equipment can run continuously for 24 hours with less manual intervention.
4. Optimized Workpiece Quality Protective atmosphere system is optional, which can effectively reduce surface oxidation and decarburization of workpieces during heat treatment, improve the surface quality of finished products, and reduce the workload of subsequent finishing processes.

Application Fields

It is suitable for heat treatment processes such as quenching, tempering, normalizing and stress relief of various carbon steel, alloy steel and stainless steel standard parts, fasteners, hardware accessories, small auto parts and electronic stamping parts.

Customization & Service

We support fully customized design according to your production capacity, workpiece specifications, process requirements and on-site power conditions. The product comes with a 12-month whole-machine warranty, and we provide lifelong technical support, original spare parts supply, as well as optional on-site installation, commissioning and operator training services.

This automatic nail making machine adopts advanced cold heading technology to produce standard common iron nails efficiently from steel wire. The whole machine realizes full‑automatic wire feeding, cutting and nail forming, greatly saving labor cost.

Built with thickened cast iron body, the nail making machine features stable operation, low noise and long service life. It supports adjustable nail length and wire diameter to meet various nail specification demands.

Simple structure makes maintenance easy. Spare parts are easy to get and replace. It is ideal equipment for small‑medium nail factories to start nail production business.

We provide complete after‑sales support including installation guidance and technical training. Customized models are available according to customer’s production requirements.

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

Model: CY06Z
Diameter range: 3-6mm
Output: 165-185pcs/min
Max. thread length: 75mm
Moving die size: 90x105x25
Power: 4Kw

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

Product Overview

This series of continuous mesh belt quenching furnace is a professional industrial heat treatment equipment, specially designed for batch quenching and hardening of fasteners, standard parts and small metal workpieces. It is widely used in fastener manufacturing, hardware processing, auto parts production and other fields, and can be matched with tempering furnaces, cleaning machines and other equipment to form a fully automatic heat treatment production line.

Core Advantages

1. Uniform Temperature & Stable Quality The furnace adopts multi-zone independent temperature control design with high-purity alumina fiber insulation lining, which ensures uniform temperature field inside the furnace, effectively reduces workpiece deformation, and guarantees consistent hardness of mass-produced products.
2. Intelligent Automatic Operation Equipped with a PLC control system and touch screen HMI, it realizes real-time monitoring and parameter setting of temperature, belt speed and production data. With automatic fault alarm function, it lowers manual operation difficulty and improves production stability.
3. High Efficiency & Energy Saving The optimized heating element layout and high-performance thermal insulation structure greatly reduce heat loss, delivering remarkable energy-saving effect compared with traditional furnaces. The continuous mesh belt conveying mode supports uninterrupted mass production and significantly improves production efficiency.
4. Customized Solutions We support customized design of furnace size, temperature range, cooling method and loading capacity according to customers' production capacity and process requirements, to adapt to different production scales and workpiece types.

Service Support

We provide full-cycle services including pre-sales process consultation, scheme design, on-site installation and commissioning, operator training and long-term after-sales technical support. All core components are selected from reliable brands with stable performance and long service life, to support your long-term stable production.

This two-die (two-roll) thread rolling machine is professional cold forming equipment designed for mass production of bolts, machine screws, studs and various threaded fasteners. It adopts the classic two-roller cold extrusion process to complete thread forming in one pass, with high forming efficiency, stable thread quality and low processing cost.

Equipped with an automatic feeding system and intelligent control unit, the machine realizes fully automatic production from raw material feeding to finished product discharging, significantly improving production efficiency and reducing labor input. Its heavy-duty cast steel body ensures stable operation under long-term continuous working conditions, making it ideal core equipment for small and medium-sized fastener manufacturing enterprises.

This automatic high-speed thread rolling machine is specialized cold forming equipment for mass production of bolts, screws, studs and various threaded fasteners. It adopts advanced cold thread rolling technology to realize a fully automatic workflow of feeding, thread forming and finished product discharging, which greatly improves production efficiency and reduces manual labor cost.

With a high-rigidity machine body and precision transmission structure, the equipment ensures stable thread precision and consistent forming quality, suitable for long-term continuous industrial production. It is widely recognized in the fastener manufacturing industry for its reliable performance, low failure rate and high cost-effectiveness.

This multi-station automatic nut cold heading machine is professional cold forging equipment for mass production of hex nuts, flange nuts, special-shaped nuts and standard fasteners. It adopts integrated cold forming process, realizing fully automatic workflow of wire feeding, cutting, heading and one-time forming, which effectively improves production efficiency and reduces labor cost.

With high-rigidity fuselage and precision transmission system, the equipment guarantees stable forming accuracy and long die service life. It is widely applied in fastener manufacturing industry for its reliable performance and high cost-effectiveness under long-term continuous operation.

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

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

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

The thread rolling machine, also known as thread roller, is essential secondary forming equipment in the fastener manufacturing industry, matched with cold heading machines for complete screw and bolt production lines. This machine adopts advanced cold rolling forming technology, which extrudes and forms threads through two precision rolling dies, realizing one-time thread forming for screws, bolts, studs and other threaded fasteners.

Compared with traditional thread cutting processing, our thread rolling machine features higher processing efficiency, better thread finish and higher structural strength. The rolled thread has compact metal fiber structure, strong tensile resistance and not easy to crack. The whole machine adopts thickened cast iron frame and high-precision transmission parts, with stable operation, low vibration and low failure rate. It supports processing various metal materials including carbon steel, stainless steel, iron and alloy steel, covering conventional and fine thread specifications.

Equipped with automatic feeding and rolling control system, the equipment is easy to operate and suitable for long-term continuous mass production. It is widely applicable to produce drywall screws, self-tapping screws, machine bolts, stud bolts and other hardware fasteners. We provide professional equipment debugging, technical training and after-sales maintenance services, and can customize models according to customer production needs to meet different fastener processing requirements.

The thread rolling machine, also known as thread roller, is essential secondary forming equipment in the fastener manufacturing industry, matched with cold heading machines for complete screw and bolt production lines. This machine adopts advanced cold rolling forming technology, which extrudes and forms threads through two precision rolling dies, realizing one-time thread forming for screws, bolts, studs and other threaded fasteners.

Compared with traditional thread cutting processing, our thread rolling machine features higher processing efficiency, better thread finish and higher structural strength. The rolled thread has compact metal fiber structure, strong tensile resistance and not easy to crack. The whole machine adopts thickened cast iron frame and high-precision transmission parts, with stable operation, low vibration and low failure rate. It supports processing various metal materials including carbon steel, stainless steel, iron and alloy steel, covering conventional and fine thread specifications.

Equipped with automatic feeding and rolling control system, the equipment is easy to operate and suitable for long-term continuous mass production. It is widely applicable to produce drywall screws, self-tapping screws, machine bolts, stud bolts and other hardware fasteners. We provide professional equipment debugging, technical training and after-sales maintenance services, and can customize models according to customer production needs to meet different fastener processing requirements.

The thread rolling machine, also known as thread roller, is essential secondary forming equipment in the fastener manufacturing industry, matched with cold heading machines for complete screw and bolt production lines. This machine adopts advanced cold rolling forming technology, which extrudes and forms threads through two precision rolling dies, realizing one-time thread forming for screws, bolts, studs and other threaded fasteners.

Compared with traditional thread cutting processing, our thread rolling machine features higher processing efficiency, better thread finish and higher structural strength. The rolled thread has compact metal fiber structure, strong tensile resistance and not easy to crack. The whole machine adopts thickened cast iron frame and high-precision transmission parts, with stable operation, low vibration and low failure rate. It supports processing various metal materials including carbon steel, stainless steel, iron and alloy steel, covering conventional and fine thread specifications.

Equipped with automatic feeding and rolling control system, the equipment is easy to operate and suitable for long-term continuous mass production. It is widely applicable to produce drywall screws, self-tapping screws, machine bolts, stud bolts and other hardware fasteners. We provide professional equipment debugging, technical training and after-sales maintenance services, and can customize models according to customer production needs to meet different fastener processing requirements.

The 1 Die 2 Blow Screw Header (1D2B Cold Heading Machine) is a widely used automatic cold forming equipment for fastener manufacturing. Adopting one die and two blows forming principle, this machine is specially developed for shaping screw blanks, self-tapping screws, drywall screws and small bolt blanks.
Built with sturdy cast body and reliable transmission components, the equipment features stable operation, low vibration, low failure rate and easy maintenance. It can process carbon steel, stainless steel and other metal raw materials. Suitable for medium and small fastener factories for continuous mass production.
We support machine parameter customization and provide complete after-sales service including installation guidance, technical training and spare parts supply.