Home > Search  > Made in China
Browse Categories
Bolt Making Machine Supplier
Thread rolling machine supplier
Nut Making Machine Supplier
Nut tapping machine China Suppliers
Heat Treatment Furnace
Zinc plating production line solution
Colding Heading Machine suppliers
two die four blow cold forging machine
Three die six blow cold forging machine
wire drawing machine
Round type thread rolling machine
Washer assembling machine
Spring washer making machine
Bi-metal Rivet machine
Optical sorting machine
packing machine
Pipe bending machine
Automatic Knurling Machine
Bolt end cutting machine
Automatic nut slotting machine
die tooling
Taps tapping tooling
Cash Counting Machine
Punch accessories
Nylon washer assembly machine
Hot Dip Galvanizing Line
Certifications
Contact Us
Harbin Rainbow Technology Co., Ltd.Address:C2-02 Handi Building,Songbei Distr.,Harbin,ChinaPostal Code:150028Web site address:http://www.fastenerequip... Contact Now
News

What is Cold Forging – Cold Forging Process, Materials, Uses, Advantages & Disadvantages

How does a thread rolling machine work

The Complete Guide to Zinc Plating: All You Need To Know

How to convert natural gas consumption into MMbtu

The Relationship Between Natural Gas and MMBtu

Thread Rolling

Working principle of nut tapping machine

Nut tapping machine is a kind of machining equipment that processes internal threads, screws or teeth buckles on the inner side of the holes of variou...

Tightening bolts can not be ignored friction can cause problems to solve the problem

fortensionbolt, The friction force is a factor to be reckoned with. Bolt friction joint has been in existence, it may be part of the reason that cause...

When to Use Spring Washers: A Comprehensive Guide

Pros and Cons of Cold Forging and Hot Forging

Difference between hot dip zinc and hot dip galvanising

Hot-dip zincing and hot-dip galvanising are two different processes for corrosion protection of metals, with hot-dip zincing usually providing better ...

Keywords : Made in China

China Fully Automatic 6 Station Cold Upsetting  machine -2026 New Design manufacturer

Fully Automatic 6 Station Cold Upsetting machine -2026 New Design

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

More
China 1 Die 2 Blow M8 Screw Machine - 2026 New Design manufacturer

1 Die 2 Blow M8 Screw Machine - 2026 New Design

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

More
China Fully Automatic Multi Station Cold Upsetting machine - 2026 New Design manufacturer

Fully Automatic Multi Station Cold Upsetting machine - 2026 New Design

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

More
China Fully Cover Automatic Screw Making Machine CE - 2026 New Design manufacturer

Fully Cover Automatic Screw Making Machine CE - 2026 New Design

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

More
China Composite Rivet Making Machine -Harbin Rainbow CE - 2026 New Design manufacturer

Composite Rivet Making Machine -Harbin Rainbow CE - 2026 New Design

Trimetal Composite Contact Cold Header can make six different metals be compounded together under cold state to produce composite contacts according to the technique requirements. Its working process includes the following steps: Sending two different kinds of metal wire into the machine firstly, transmitting them into the mould after being cut off. Then by two times upsetting process, the two kinds of metal become the composite contacts. Finally, the products retreat from the mould and enter into the finished product box.

 

More
China Full Automatic Spindle Tapping & Nut Drilling Machine with PLC -2026 New Design manufacturer

Full Automatic Spindle Tapping & Nut Drilling Machine with PLC -2026 New Design

China Flange Nut Threading Machine Nut Tapping Machine 4 Spindles - 2026 New Design manufacturer

Flange Nut Threading Machine Nut Tapping Machine 4 Spindles - 2026 New Design

China China 2026 Hot Sale Automatic 3 to 33mm Spring Washer Cutting Machine manufacturer

China 2026 Hot Sale Automatic 3 to 33mm Spring Washer Cutting Machine

Rainbow full production of Spring washer making machine. we have all sizes equipment for 3mm, up to above 33mm spring washers.

More
China China Good Price Fully Automatic M5-M6 Long Nut Part Cold Forging Machine manufacturer

China Good Price Fully Automatic M5-M6 Long Nut Part Cold Forging Machine

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.

More
China China Good Quality Low Price Fully Automatic Nail Making Machine manufacturer

China Good Quality Low Price Fully Automatic Nail Making Machine

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.

More
China 2026 Hot Sale Good Price Spring Washer Making Machine manufacturer

2026 Hot Sale Good Price Spring Washer Making Machine

Rainbow full production of Spring washer making machine. we have all sizes equipment for 3mm, up to above 33mm spring washers.

We can provide a whole line to make spring washer. The spring wahser production line contains cutting machine, belt wire drawing machine, rolling up machine, coil collection machine.

 Spring washer machine it include three parts :

1 step,drawing the round wire to belt wire machine.

2 step,rolling up machine.

3 step, cutting machine.

More
China Fully Automatic RBF-84S Bolt Making Machine Cold Forging Machine manufacturer

Fully Automatic RBF-84S Bolt Making Machine Cold Forging Machine

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 Electro plating 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!

More
China Fully Automatic High Quality Cold Heading Machine Screw Making Machine manufacturer

Fully Automatic High Quality Cold Heading Machine Screw Making Machine

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.

More
China Rainbow 2026 Hot Sale Multi-Station Bolt Cold Forging Machine manufacturer

Rainbow 2026 Hot Sale Multi-Station Bolt Cold Forging Machine

Model

Unit

RBF-65S

RBF-85S RBF-105S RBF-135S

Forging force

Kgs

43,000

85,000 98,000 145,000

Max cut-off dia

mm

8

10 12 15

Max cut off length

mm

95

100 133 185

Speed range

pcs/min

120-200

95-160 90-150 60-105

P.K.O Stroke

mm

15

26 20 30

K.O stroke

mm

80

85 110 160

Main slide stroke

mm

136

140 190 270

Main motor

kw

15

22 30 37

Cut-off die size

mm

30*45L

35*62L 45*59L 63*69L

Punch die size

mm

40*90L

45*115L 53*115L 60*130L

Main die size

mm

50*110L

60*120L 75*135L 86*190L

Die pitch

mm

60

80 94 110

Main weight

kgs

11,000

17,000 20,000 32,000

Normal bolt size

mm

3-6

5-8 6-10 8-12.7

Shank length of blank

mm

10-75

15-75 15-100 20-150
More
China China Rainbow 2026 Hot Sale Full Automatic Screw Making Machine Cold Heading Machine manufacturer

China Rainbow 2026 Hot Sale Full Automatic Screw Making Machine Cold Heading Machine

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.

More
China China Good Price 4 Spindle Fully Automatic M14-M16 Nut Tapping Machine manufacturer

China Good Price 4 Spindle Fully Automatic M14-M16 Nut Tapping Machine

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.

More
China Two Axis Hydraulic Thread Rolling Machine High Precision 2-Die Thread Roller for High Strength Bolts Studs Threaded Rods manufacturer

Two Axis Hydraulic Thread Rolling Machine High Precision 2-Die Thread Roller for High Strength Bolts Studs Threaded Rods

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.

More
China Automatic High Speed Thread Rolling Machine with Vibratory Feeder for Screw Bolt Fastener Thread Forming manufacturer

Automatic High Speed Thread Rolling Machine with Vibratory Feeder for Screw Bolt Fastener Thread Forming

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.

More
China Energy-Saving Continuous Mesh Belt Quenching Furnace Automatic Heat Treatment Line for Fasteners Bolts Screws Nuts manufacturer

Energy-Saving Continuous Mesh Belt Quenching Furnace Automatic Heat Treatment Line for Fasteners Bolts Screws Nuts

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.

More
China High Speed Automatic Nail Making Machine Steel Wire Nail Cold Heading Machine for Common Iron Nails Production manufacturer

High Speed Automatic Nail Making Machine Steel Wire Nail Cold Heading Machine for Common Iron Nails Production

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.

More
China Rainbow High Capacity Automatic Continuous Mesh Belt Furnace 24H Non-stop Running manufacturer

Rainbow High Capacity Automatic Continuous Mesh Belt Furnace 24H Non-stop Running

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

More
China Rainbow Automatic Thread Rolling Machine Screw Bolt Thread Making Machine manufacturer

Rainbow Automatic Thread Rolling Machine Screw Bolt Thread Making Machine

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

More
China Rainbow 1 Die 2 Blow Cold Heading Machine Automatic Screw Bolt Heading Making Machine manufacturer

Rainbow 1 Die 2 Blow Cold Heading Machine Automatic Screw Bolt Heading Making Machine

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

More
China Automatic Continuous Mesh Belt Quenching Furnace Industrial Heat Treatment Equipment for Fasteners Bolts Nuts Hardening & Tempering manufacturer

Automatic Continuous Mesh Belt Quenching Furnace Industrial Heat Treatment Equipment for Fasteners Bolts Nuts Hardening & Tempering

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.

More
  • Home
  • Previous
  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • Next
  • End
  • Current Page:1/82  Total 1965  items