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 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.

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

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

• 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.

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.

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-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.

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-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.

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

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

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

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

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

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

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

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

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