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Harbin Rainbow Technology Co., Ltd.
This high-speed automatic thread rolling machine is purpose-built for mass external thread processing of bolts, screws, studs and various standard fasteners. Adopting mature cold rolling forming technology, it delivers high production efficiency, superior thread surface finish and enhanced thread load-bearing strength, making it a reliable choice for fastener factories, hardware workshops and auto parts manufacturers.
The machine features an integral cast steel fuselage and optimized transmission structure, ensuring stable operation, low vibration and low failure rate even during long hours of continuous high-speed production. The precision-machined die mounting structure guarantees accurate die alignment, producing uniform, standard and smooth threads with excellent dimensional consistency that meets international fastener quality standards.
It is compatible with a wide range of metal materials including carbon steel, stainless steel, copper and aluminum, and supports processing of metric threads, inch threads and straight knurling. The matched automatic feeding system effectively reduces labor intensity and improves production consistency, fully adapting to large-scale batch production.
We provide full-range supporting services covering installation guidance, on-site operator training, rolling die matching consultation and long-term after-sales technical support. Customized configurations are also available to fit customers' specific production needs.

Product Overview Harbin Rainbow automatic thread rolling machine is professional cold forming equipment for external thread mass production. It is specially designed for manufacturing bolts, screws, studs, threaded rods and various fastener workpieces. Adopting advanced chipless cold rolling technology, it delivers high-efficiency thread forming with excellent thread strength, surface finish and dimensional consistency.
Core Advantages
Application Fields Widely applied in fastener manufacturing, hardware processing, automotive parts, construction hardware and general machinery industries, suitable for producing all kinds of standard and non-standard threaded workpieces.
Service Support We provide tailored solutions based on your product specifications and output demands, along with one-stop services including installation debugging, operation training, 12-month quality warranty and lifelong remote technical support.

This full automatic continuous zinc plating line is professional industrial surface treatment equipment designed for metal parts and fastener manufacturing. It adopts mature electroplating technology to form a uniform, dense and highly corrosion-resistant zinc coating on the workpiece surface, effectively improving the rust resistance and service life of metal components.
Equipped with a PLC intelligent control system and automatic conveying mechanism, the production line realizes fully continuous automated operation, which greatly improves production efficiency and reduces manual labor costs. Key process parameters can be precisely adjusted to ensure stable plating quality and consistent coating thickness across batches.
Widely applied in fastener production, hardware processing, auto parts manufacturing and other industries, the line supports full customization of line length, process configuration, output capacity and plating types to match different production scales and process requirements. We provide one-stop services including scheme design, on-site installation guidance, operator training and long-term after-sales technical support for global customers.


This automatic nut former is a high-performance cold forging equipment dedicated to fastener manufacturing. It integrates blanking, pre-forming, finish forming and piercing processes in one continuous production flow, effectively improving production efficiency and reducing manual operation costs.
Adopting high-rigidity body structure and precision transmission system, the machine delivers stable performance, high forming accuracy and low noise during long-time operation. It is compatible with carbon steel, stainless steel, alloy steel and other common metal materials, and can produce all kinds of standard hex nuts, flange nuts and custom special-shaped fasteners.
Equipped with PLC intelligent control system and touch screen interface, it is easy to operate and adjust parameters. We provide full customization service for machine configuration, molds and production line schemes according to customers' actual demands. With complete after-sales system including installation guidance, operator training and lifelong spare parts supply, we offer reliable fastener manufacturing solutions for global customers.

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MoreThis 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.

high quality hydraulic forging press bolt making machine power hammer cold forging machine
MoreThe 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,...
MoreHarbin 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.
MorePlace 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
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
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
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