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Harbin Rainbow Technology Co., Ltd.Address:C2-02 Handi Building,Songbei Distr.,Harbin,ChinaPostal Code:150028Web site address:http://www.fastenerequip... Contact Now
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What is Cold Forging – Cold Forging Process, Materials, Uses, Advantages & Disadvantages

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

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...

Thread Rolling

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...

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 ...

How to convert natural gas consumption into MMbtu

The Relationship Between Natural Gas and MMBtu

When to Use Spring Washers: A Comprehensive Guide

What Is Cold Forming?

Analysis of the principle and function of spring washers

In all kinds of mechanical connections, the anti-loosening of bolts is a very important link, and there are many ways to prevent loosening of bolts in...

Keywords : Made in China

China 2026 Rainbow Multi Station Cold Forging Machine Automatic Spare Parts Making Machine manufacturer

2026 Rainbow Multi Station Cold Forging Machine Automatic Spare Parts Making Machine

Model

Unit

RBF-164S

RBF-204L RBF-254SL

Forging force

Kgs

220,000

380,000 450,000

Max cut-off dia

mm

18

23 26

Max cut off length

mm

195

240 255

Speed range

pcs/min

70-110

50-80 40-70

P.K.O Stroke

mm

30

45 35

K.O stroke

mm

170

220 215

Main slide stroke

mm

260

346 330

Main motor

kw

55

75 110

Cut-off die size

mm

60*90L

75*120L 80*130L

Punch die size

mm

75*185L

90*215L 120*270L

Main die size

mm

100*190L

125*240L 140*250L

Die pitch

mm

120

140 160

Main weight

kgs

40,000

62,000 103,000

Normal bolt size

mm

10-16

12-20 14-25.4

Shank length of blank

mm

20-150

25-200 35-200
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China Rainbow High Speed Tri-metal Composite Contact Rivet Making Machine manufacturer

Rainbow High Speed Tri-metal Composite Contact Rivet Making Machine

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.

 

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China Rainbow High Speed Spring Washer Making Machine Automatic Wire Drawing Machine Cutting Machine manufacturer

Rainbow High Speed Spring Washer Making Machine Automatic Wire Drawing Machine Cutting 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.

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

Rainbow Automatic Screw Cold Heading Machine High Speed 1 Die 2 Blow Bolt 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

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China 2026 Hot Sale Nuts Tapping Machine Automatic Nuts Threading Machine manufacturer

2026 Hot Sale Nuts Tapping Machine Automatic Nuts Threading 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.

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China Automatic High Quality Nut Making Machine for M30 High Efficiency Spare Parts Making Machine manufacturer

Automatic High Quality Nut Making Machine for M30 High Efficiency Spare Parts Making Machine

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

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China High Speed Multi Station Cold Former for M12 M14 Hex Nut Former for Nut manufacturer

High Speed Multi Station Cold Former for M12 M14 Hex Nut Former for Nut

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

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China Long Service Life High Precision Nut Forming Machine with 6 Station manufacturer

Long Service Life High Precision Nut Forming Machine with 6 Station

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

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China M20 Automatic High Precision 6 Station Nuts Making Machine manufacturer

M20 Automatic High Precision 6 Station Nuts Making Machine

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

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China Automatic 6 Station 7 Station Nut Making Machine Heavy Duty Nut Former Cold Forging Machine manufacturer

Automatic 6 Station 7 Station Nut Making Machine Heavy Duty Nut Former Cold Forging Machine

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

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China 6 Station Part Former Cold Heading Machine Bolt Nut Making Machines Nut Former manufacturer

6 Station Part Former Cold Heading Machine Bolt Nut Making Machines Nut Former

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!

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China Extra long stroke cold forging machine M20 nut and bolt making machine with straightener manufacturer

Extra long stroke cold forging machine M20 nut and bolt making machine with straightener

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 2026 new design 4 die bolt making machine for M20 long stroke bolt former manufacturer

2026 new design 4 die bolt making machine for M20 long stroke bolt former

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!

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China Good Quality Screw Making Forge Hammer Cold Heading Machine manufacturer

Good Quality Screw Making Forge Hammer Cold Heading Machine

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

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China Good Quality Screw Making Cold Heading Machine for SDS manufacturer

Good Quality Screw Making Cold Heading Machine for SDS

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

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China Best Price Screw Making Metal Forming Machine for Wooden Screws manufacturer

Best Price Screw Making Metal Forming Machine for Wooden Screws

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

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China Best Price Screw Making Forge Hammer Cold Heading Machine for SDS manufacturer

Best Price Screw Making Forge Hammer Cold Heading Machine for SDS

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

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China Automatic Cold Heading Screws Making Machine for SDS manufacturer

Automatic Cold Heading Screws Making Machine for SDS

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

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China Good Price Cold Forging Screw Making Cold Heading Machine for SDS manufacturer

Good Price Cold Forging Screw Making Cold Heading Machine for SDS

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

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China Power Hammer High Quality Forging Screw Making Cold Heading Machine manufacturer

Power Hammer High Quality Forging Screw Making Cold Heading Machine

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

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China Automatic Nut Bolt Making Screw Press Power Hammer High Quality Forging manufacturer

Automatic Nut Bolt Making Screw Press Power Hammer High Quality Forging

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

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China 2 Die 4 Blew Screw Machine Hot Sales Nuts and Bolts Making Machines manufacturer

2 Die 4 Blew Screw Machine Hot Sales Nuts and Bolts Making Machines

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

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China Cold Heading Machine for Drywall Screws Factory Price manufacturer

Cold Heading Machine for Drywall Screws Factory Price

Multi stations Metal Forging Machinery Cold Header Heading Machine Screw Making Machines cold heading machine price

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China Stainless Steel Hex Nut Cold Heading Machine Harbin Rainbow manufacturer

Stainless Steel Hex Nut Cold Heading Machine Harbin Rainbow

1.

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