Carbon Steel Galvanized Black Oxidation DIN Flange Welding Nuts

Carbon Steel Galvanized Black Oxidation DIN Flange Welding Nuts.

Description

The cold heading process is one of the new processes of metal pressure machining with little and no cutting. It is a processing method that uses the plastic deformation generated by the metal under the action of external force, and with the help of the mold, the metal volume is redistributed and transferred to form the required parts or blanks. The cold heading process is most suitable for the production of standard fasteners such as bolts, screws, nuts, rivets, and pins.

Operation process of black oxidation treatment:
Workpiece clamping → degreasing → cleaning → pickling → cleaning → oxidation → cleaning → saponification → hot water boiling and washing → inspection.

(1) Workpiece clamping: According to the shape and size of the work piece, a special fixture or spreader should be designed. The purpose is to leave enough gaps between the workpieces, the workpieces cannot contact each other, so that each workpiece can be completely immersed in the oxidizing solution to be oxidized.

(2) Degreasing: The purpose is to remove oil stains on the surface of the workpiece. After machining (bluing and blackening is the last process), the surface of the workpiece will inevitably not leave oil stains. This is especially true when using anti-rust oil for inter-process anti-rust. Any oil pollution will seriously affect the formation of ferroferric oxide, so it must be removed before turning blue and black.

Factory Diaplay

Inspection Equipments

Package Room

Q1: Can I visit your factory?
A2: Yes! Warmly welcome to visit our factory. It would be Great if you can inform us in advance.

Q2:The quality of your products?
A2:The company has advanced production and testing equipment .Every products will be 100% inspected by our qc department before
shipment.

Q3:How about your price?
A3:High quality products with reasonable price. Please give me a inquire, I will quoted you a price for you refer at once.

About us

Jiaxing Dexun Co., Ltd. was established in 1997, origin from Taiwan, we are professional manufacturer and exporter integrated with design, research & development, manufacturing and sales of OEM/ODM stamping parts,deep drawing parts, standard welding fasteners and non-standard welding fasteners.

* Located in jiaxing city, only about 1 hour's drive from Shanghai, Hangzhou, Ningbo, Suzhou, these important cities, the transportation is very convenient.

* 2 mature mould development workshops with advanced equipment to develop mould for customers.

* 2 International approvals,Verify & certificate in accordance with ISO9001,IATF16949, work with SGS, operate the PPAP Level 3.

* 2 labs of quality inspection,Control products quality strictly; equipped with various quality testing machines including direct-reading spectrometers, tensile testing machines, CMM machine, X-ray flaw detection instrument.

* 2 quenching and tempering heat treatment lines.

* 2 automatic welding lines.

* 4 Powder coating & Painting lines, Plating lines

* 42 people professional R&D team : 30 special technicians and 12 senior engineers.

* 20 years’experience on manufacturering OEM/ODM products

* 100 sets of automatic production machines: Have 10 sets of automatic stamping & deep drawing equipments, 50 cold forming machines; 40 tooth grinding machines ,equipped with Japan, Germany,etc imported machines.

* 175 employees

* 10 millions monthly production capacity

* 35 countries exported to

* Supplying products to GM,John deere,Wal-Mart，etc

* Implement environment protection concept; strictly operate the facilities and processes under environmental requirements.

We use advanced equipment to improve cost and quality at the same time to make sure lowest price and best quality for customers. We have quality control experts & engineers to test every piece product before shipment. We keep on studying to provide professional service.

Our Mission & Vision

We always work hard to be an environment protection model enterprise. We strive for sustainable development. We hope to be a win-win partner of our customers all over the world.

Environment protection mission:

A full series of environment policies are applied to our every manufacturing activities. Firstly, to propagandize environment protection policy to make sure environment-friendly concept is everywhere in our company.
Every new staff will have environment protection training class. All staffs have environment protection knowledge and policy lecture every month. All the operation manual will marked out environment protection requirements.
Secondly, to establish environment protection responsibility policy.
Thirdly, to have basic environment protection management.
Step 1: Have environment monitor every time.
Step 2: Manage the pollutant treatment equipment efficiently.
Step 3: Establish permit system of pollutant discharge.
Step 4: Establish legal audit system.
Fourthly, to build up emergency rescue system.