Yellow Zinc Plated Circle Head Weld Screws , 4.8 Grade Carbon Steel Welded Eye Screw

4.8 Class Carbon Steel yellow Zinc plated Circle head welded eye screw.

Description

Welding screw is also called energy storage screw, electric bolt welding stud, or planting welding nail, etc.

The full name of yellow zinc plating is galvanized golden yellow passivation.
The solution used for passivation is composed of three basic components: chromic acid, sulfuric acid, and nitric acid, but the ratio is slightly different, and there is no difference in the composition and anti-corrosion ability of the passivation film.

Zinc coating is an anodic coating, which is mainly used to prevent corrosion of steel. The quality of its protective performance is closely related to the thickness of the coating. After the zinc coating is passivated, dyed or coated with a light protectant, its protective and decorative properties can be significantly improved.

In the plating tank containing the galvanizing solution, the cleaned and specially pretreated parts to be plated are used as the cathode, and the anode is made of plated metal, and the two poles are respectively connected with the positive and negative electrodes of the DC power supply. The zinc plating solution is composed of an aqueous solution containing metal-plated compounds, conductive salts, buffers, pH adjusters and additives.

After being energized, the metal ions in the zinc plating bath move to the cathode under the action of the potential difference to form a plating layer. The anode metal forms metal ions into the zinc plating solution to maintain the concentration of metal ions to be plated. In some cases, such as chromium plating, an insoluble anode made of lead and lead-antimony alloy is used, which only serves to transfer electrons and conduct current.

The concentration of chromium ions in the electrolyte needs to be maintained by regularly adding chromium compounds to the plating solution. When galvanizing, the quality of the anode material, the composition of the galvanizing solution, temperature, current density, energization time, stirring intensity, precipitated impurities, power waveform, etc. will affect the quality of the coating and need to be controlled in a timely manner.

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.