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two die four blow cold forging machine

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New Products: Round type thread rolling machine

automatic screw packaging machine

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Contact Us: Harbin Rainbow Technology Co., Ltd.Address:C2-02 Handi Building,Songbei Distr.,Harbin,ChinaPostal Code:150028Web site address:http://www.fastenerequip...

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News: Burr fastener processing knowledge

What is a fastener glitch? Glitch refers to the fastener surface of the fastener very fine microscopic metal particles that glitch was that we become....

What's washer?

Washers: flat circular shape of a class of fasteners. Placed on the bolt, screw or nut support surface and connection between the surface of the parts...

The differences between spring washers and plain washers

It consists of a thin plate in the shape of the donut of metal with an opening in the middle, and the washing machines are used to distribute a tusk.A...

Locking threaded fasteners are three basic methods of connection

The basic method of locking threaded fasteners are divided into three basic types: a. Non-detachable locking This is a use weld, bonding, or red spots...

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...

2017 THE YEAR OF INTERNET OF THINGS (IOT): MORGAN STANLEY

We at are an inflection point for the development and adoption of IoT technology, that’s the main takeaway from a new report on the Internet of Thing...

HAPPY NEW YEAR 2017!

MAY ALL COOPERATED FACTORIES AND CUSTOMERS HAVE A PROSPECTED YEAR!

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...

For all aspects of the analytical standard fastener products

1) Fastener ProductsStandard dimensions: the content of the specific provisions of the basic dimensions of the product; threaded products, including b...

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...

Products: Continuous mesh belt furnace; 4 Spindle Automatic Tapping Machine; Automatic High Speed Screw Cold Heading Machine; Six Die Nut and Part Forging Machine; 4 Station Bolt Making Machine

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About Rainbow

Our company comes from China National Machinery Import and Export Corp. Harbin branch. By many years market development and experience accumulation,n...
Overseas Business

Wehave attended many mainland & overseas exhibitions, such as Puneexhibitions , Mumbai exhibitions, and Shanghai exhibitions. Now we give some picture...
Corporate Responsibility

We are committed to integrating corporate and social responsibility andthe principle of sustainable development into business operation andmaking cont...