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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

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 ...

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...

High speed installation cold forging machine bolts and nuts making machine for screw

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...

Max diameter one key molding nut drilling machine 2 spindle nut tapping machine

Nut tapping machine is a kind of mechanical processing equipment that processes internal threads, screws or teeth in the inner side of the holes of th...

Hot popular Cold Forging machine bolt forming machine with inveter for good design

Harbin Rainbow Technology Co.,Ltd is one of the biggest fastener equipment dealer and manufacturer in China. We have invested one Cold former factory(...

What's self-tapping screw?

Self-tapping screws: similar to machine screws, but the threads on the screw for special self-tapping screws with threads. Used to fasten the connecti...

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...

China factory price and Advanced Automatic Screw Maker Thread Rolling Machine

Product Descriptionview more >>Frequently bought togetherHigh Speed Thread Rolling Machine Factory Price Thread Roller Hot Sale Thread Machine$4,800.0...

Keywords : Carbon steel

China New Research Development Quality Over Thread Rolling Machine Rolling Mill with Huge Discount manufacturer

New Research Development Quality Over Thread Rolling Machine Rolling Mill with Huge Discount

The rolling of the wire is generally composed of a fuselage, engine, rolling plate of the portable wire, rustling strip of the wire and protective cov... More
China Chinese factory price  and Continuous mesh belt furnace  heat treatment furnace manufacturer

Chinese factory price and Continuous mesh belt furnace heat treatment furnace

The whole set heat treatment line is composed of : Automatic Feeding Machine →Front Washer→ Hardening Furnace → Oil quenching tank → Rear Washer ... More
China High capacity 6 station nut former Rainbow brand manufacturer

High capacity 6 station nut former Rainbow brand

high capacity,high precision,full automatic,cold forging machine, nut making machine More
China High speed  extra thick nut making machine manufacturer

High speed extra thick nut making machine

high capacity,high precision,full automatic,cold forging machine, nut making machine More
China Chinese Rainbow 6 station nut making machine manufacturer

Chinese Rainbow 6 station nut making machine

high capacity,high precision,full automatic,cold forging machine, nut making machine More
China High specialized nut former machine  nut tapping machine manufacturer

High specialized nut former machine nut tapping machine

Product name Nut tapping machine Model ... More
China Best price cold forging nail making machine manufacturer

Best price cold forging nail making machine

Nail making machine This machine is advanced in design, compact in structure, beautiful in appearance, easy to use, safe in operation, high speed and ... More
China China wholesale  heat treatment equipment electric furnace with mesh belt furnace manufacturer

China wholesale heat treatment equipment electric furnace with mesh belt furnace

The whole set heat treatment line is composed of : Automatic Feeding Machine →Front Washer→ Hardening Furnace → Oil quenching tank → Rear Washer ... More
China Rainbow 6 station nut and spare parts making machine manufacturer

Rainbow 6 station nut and spare parts making machine

high capacity,high precision,full automatic,cold forging machine, nut making machine More
China Rainbow full automatic 4 spindle nut tapping machine manufacturer

Rainbow full automatic 4 spindle nut tapping machine

Full automatic automatic automatic walnut machine, suitable for Hex and Flang Nut product. More
China High Speed 4 spindle nut tapping machine manufacturer

High Speed 4 spindle nut tapping machine

Full automatic 4 speindle nut tapping machine,suitable for hex and flange nut product. More
China Chinese factory price  Spring Washer Making Machinery wire spring making machines manufacturer

Chinese factory price Spring Washer Making Machinery wire spring making machines

27 可添加模块Product Description More
China Specialized production heat treatment equipment electric furnace with mesh belt furnace manufacturer

Specialized production heat treatment equipment electric furnace with mesh belt furnace

The whole set heat treatment line is composed of : Automatic Feeding Machine →Front Washer→ Hardening Furnace → Oil quenching tank → Rear Washer ... More
China Great promotion nut making  Tapping Machine for nuts manufacturer

Great promotion nut making Tapping Machine for nuts

Full automatic 4 speindle nut tapping machine,suitable for hex and flange nut product. More
China used friction screw press machines for sale nuts machine crusing Tapping Machine manufacturer

used friction screw press machines for sale nuts machine crusing Tapping Machine

Full automatic 4 speindle nut tapping machine,suitable for hex and flange nut product. More
China Thread Rolling Machine From Rainbow Brand manufacturer

Thread Rolling Machine From Rainbow Brand

正 在 等待 翻译 …… More
China High temperature annealing furnace for Aluminum wire manufacturer

High temperature annealing furnace for Aluminum wire

Summary: This type of oven has a unique design of strong air circulation system, which ensures the stability of temperature. The temperature control s... More
China RSH10-300 2023 new type cold heading machine manufacturer

RSH10-300 2023 new type cold heading machine

Harbin Rainbow Technology Co., Ltd. is a leading fastener equipments supplier in China. The main business is manufacturing cold forging machine, such as Bolt Maker, Nut Maker, Heading Machine, Thread Rolling Machine, Wire Drawing Machine and Mesh Belt Furnace,Zinc Plating Machine, etc.



We have established reputation in countries such as India, US, Europe and Southeast Asia where we have core customer bases. Meanwhile, we are well respected by the domestic factories and the customers in the mechanical and electrical business.



We have the confidence, backed by our professional knowledge and experience in the mechanical and electrical business, to develop the foreign markets for our home enterprises and to open up the Chinese markets for the companies abroad.



Nowadays, more and more reputed companies compete in a long-term cooperation with us. That‘s why we can provide our customers with the best quality products, the bes More
China high speed nail maker nail machine manufacturer

high speed nail maker nail machine

Nail making machine This machine is advanced in design, compact in structure, beautiful in appearance, easy to use, safe in operation, high speed and ... More
China High precision Cremation furnace fusion furnace general electric furnace parts manufacturer

High precision Cremation furnace fusion furnace general electric furnace parts

The whole set heat treatment line is composed of : Automatic Feeding Machine →Front Washer→ Hardening Furnace → Oil quenching tank → Rear Washer ... More
China Full Automatic tapping machine hex nut tapping machine with nut making machines manufacturer

Full Automatic tapping machine hex nut tapping machine with nut making machines

Full automatic 4 speindle nut tapping machine,suitable for hex and flange nut product. More
China Factory direct supply 4 spindle tapping machine nut tapping machine with nut tapper for hex bolts manufacturer

Factory direct supply 4 spindle tapping machine nut tapping machine with nut tapper for hex bolts

Full automatic 4 speindle nut tapping machine,suitable for hex and flange nut product. More
China Complete material Adequate stock nut tapping machine tapping threading machine for hex nuts manufacturer

Complete material Adequate stock nut tapping machine tapping threading machine for hex nuts

Full automatic 4 speindle nut tapping machine,suitable for hex and flange nut product. More
China 1 die 2 blow automatic cold heading machine manufacturer

1 die 2 blow automatic cold heading machine

Best price Metal Forging Machinery Screw Header Machine Screw Making Machine More