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

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

Harbin Rainbow Technology is a leading fastener equipment manufacturer with over 30 years of specialized experience in the industry. We own four production bases in Ningbo, Suqian and Wuxi, specializing in the research and development, manufacturing and sales of complete fastener production lines. Our machines have been exported to more than 50 countries including the United States, Germany, South Africa, Brazil and India, earning high recognition from global customers.

Our automatic nut making machines are engineered for high efficiency, high precision and long-term stability, making them the ideal choice for fastener manufacturers worldwide. We offer a complete range of nut production equipment from cold heading machines to tapping machines, capable of producing all types of nuts from M2 to M30. Our machines feature a four-spindle dual servo drive system that ensures stable operation and high tapping accuracy up to 0.02 millimeters, with a production speed of 200 to 350 pieces per minute, which is 30 percent more efficient than traditional models. The heavy-duty cast iron body undergoes strict aging treatment to eliminate internal stress and extend service life, and the fully automatic operation from material feeding to finished product requires only one operator.

Our machines can produce various types of nuts including hex nuts, flange nuts, lock nuts, square nuts, weld nuts and coupling nuts, using materials such as carbon steel, stainless steel, copper, aluminum and alloy steel. They are widely used in the automotive, construction, machinery, electronics and furniture industries.

All our machines are CE and ISO 9001 certified and undergo strict 72-hour continuous running tests before delivery. We provide a one-year whole machine warranty, lifetime technical support, online video guidance and remote troubleshooting, as well as engineers available to service machinery overseas and customized mold design and turnkey production line solutions. Contact us today for a free quote and let us help you build a high-efficiency nut production line.

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

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

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

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 mesh belt heat treatment furnace is a continuous automatic production equipment specially developed for fastener hardware industry, widely applied for quenching, tempering, carburizing and carbonitriding of carbon steel, alloy steel fasteners including grade 8.8, 10.9, 12.9 high-strength bolts, nuts, studs and rivets.

Adopting thick reinforced furnace shell and multi-layer ultra-low heat loss refractory insulation structure, the equipment greatly reduces power consumption and long-term operation cost. Equipped with independent multi-zone PID temperature control system, it realizes ultra-uniform heating to ensure consistent hardness, toughness and mechanical performance of every batch fasteners, effectively avoiding defective products caused by temperature deviation.

The 310S high temperature resistant stainless steel mesh belt carries workpieces stably, matched with vector frequency conversion transmission to adjust feeding speed flexibly for different process requirements. We configure complete protective atmosphere system to keep fastener surface bright without oxidation and decarburization, eliminating post-processing polishing cost.

Whole set can be customized as single quenching furnace, single tempering furnace, or integrated quenching-tempering linkage production line according to your factory output and workshop layout. We provide one-stop service including scheme design, production, installation debugging, worker operation training and global after-sales engineer support. The machine runs stably for 24-hour mass production, which is the standard heat treatment equipment for medium and large fastener manufacturing factories worldwide.

  This fully automatic PLC-controlled hard chrome plating production line is tailor-made for mass processing of fasteners including bolts, nuts, screws and studs. Supporting customizable tank capacities from 500L to 10000L, the unit realizes stable 24/7 non-stop continuous industrial operation to meet high-volume batch production demands.

  Constructed with anti-corrosion PP/FRP tank bodies and equipped with high-frequency stable rectifiers, precise constant temperature heating, multi-stage circulating filtration and acid mist waste gas purification systems, the machine delivers uniform, high-adhesion hard chrome plating with adjustable coating thickness between 0.03mm and 0.3mm.

  We provide one-stop customized design for equipment layout, automation grade and auxiliary supporting wastewater treatment devices. Professional on-site installation, commissioning and operator training are supplied, with a 12-month full machine warranty and lifelong after-sales technical guidance for global industrial clients.

Our automatic nut tapping machine is specialized equipment for internal thread tapping of all kinds of nuts, widely matched with cold heading machines in fastener production lines.

Main Product Advantages

1. High tapping precision, stable thread tolerance, low defective rate
2. Full-automatic feeding & tapping, greatly cut manual operation cost
3. Easy mold switching to produce different size nuts flexibly
4. Compact body structure, low failure rate and long service life

This tapping equipment is an essential matching machine for standard parts factories and hardware fastener manufacturers.

Our 3 Die 6 Blow cold heading machine is multi-station automatic cold forging equipment designed for mass production of screws, bolts and rivets. Adopting integrated die set and stable mechanical structure, it completes cutting, pre-forming and heading in one single procedure.

Features:

• High finished product precision, low material waste
• Stable running, long service life of moulds
• Suitable for various fastener raw materials
• Widely used in hardware & fastener manufacturing factory

1 Die 2 Thread Automatic Thread Rolling Machine

Our 1 Die 2 Thread Thread Rolling Machine is a high-efficiency, high-precision cold forming equipment specially engineered for mass production of standard and non-standard bolts, screws, studs, threaded rods and other fasteners. Adopting the industry-leading 1D2T flat die rolling process, this machine forms two complete threads in a single pass, doubling production efficiency compared with traditional single-thread rolling machines while maintaining superior thread quality.

Core Competitive Advantages

• Industry-Leading Efficiency: The optimized cam transmission system delivers a stable production speed of up to 180 pieces per minute, significantly shortening your production cycle and reducing unit cost.
• Superior Thread Quality: Precision-ground rolling dies produce threads with smooth surface finish, high dimensional accuracy and excellent tensile strength, fully meeting DIN, ANSI, JIS and ISO international standards.
• Ultra-Stable Operation: Heavy-duty cast iron frame provides exceptional rigidity and vibration absorption, ensuring consistent performance even in 24-hour continuous industrial production environments.
• Low Maintenance Design: Modular structure and wear-resistant components minimize downtime and maintenance costs. Die replacement can be completed in less than 10 minutes by a single operator.
• Wide Versatility: Compatible with various metal materials and thread profiles. We offer customized solutions for special thread shapes, feeding systems and voltage requirements.

Applications

This Automatic Thread Rolling Machine is widely used in fastener manufacturing, hardware processing, automotive parts, construction machinery, electronics and aerospace industries. It is the ideal equipment for small and medium-sized fastener factories looking to improve production efficiency and product quality.

As a professional manufacturer of thread rolling machines and bolt screw making machines with over 15 years of experience, we provide not only high-quality equipment but also comprehensive after-sales service including installation guidance, operator training and spare parts supply. Contact us today to get a detailed quotation and free technical consultation!

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!

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 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 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.