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Galvanized Parts

Your Professional Galvanized Parts Supplier

 

Gnee Steel (Tianjin) Co., Ltd. was established in Anyang, Henan, in 2008. Our main products include galvanized steel plates, cold-rolled steel plates, pre-coated steel plates, steel pipes, PPGI, PPGL, PPAL, color-coated steel plates, pre-processed steel plates, coil steel, galvanized processing parts, and other related products.

 

Certifications
We have successfully passed ISO, CE, and other system certifications. Additionally, our products have been tested and approved by SGS, TUV, BV, and other leading testing organizations.

 

Our Strengths
To date, Gnee Steel has made a total investment of over 60 million yuan. The company’s factory covers nearly 40,000 square meters, with a storage capacity of 250,000 tons. We are equipped with 5 advanced slitting units and 3 horizontal shearing units, all of which feature intelligent operation, automation, and high precision in processing.

 

Sales Market
We primarily export our products to four key regions: South America (35% of exports), Africa (25%), the Middle East (20%), and Southeast Asia (20%).

 

 
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Product name

Hot Dip Galvanized Nut

Standard

ASME B 18.2.1, IFI149,DIN931, DIN933, DIN558, DIN960, DIN961, DIN558, ISO4014, DIN912 and etc.

Size

Standard & non-standard, spport customized.

Material

Carbon Steel, Alloy Steel, Stainless Steel, Brass. Aluminum or as your requirements.

Grade

SAE J429 Gr.2, 5,8; ASTM A307Gr.A, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 and etc.

Certification

ISO9001,IATF16949,ISO14001,etc

Finish

Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G. according to your requirement.

Supply Ability

2000 tons per month.

Package

According to customers requirement.

Payment

T/T, L/C , D/A , D/P , Western Union ,MoneyGram ,etc

Market

South&north Amrica/Europe/East&South east Asia/ Australia and Africa etc.

Notice

Please lets know the Size, quantity, Material or Grade, surface, If it is special and Non-standard products, please supply the Drawing or Photos or Samples to us.

 

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Hot Dip Galvanized Bolt

Key Features

 

 

Material

Made from high-quality steel, these nuts are treated with a hot-dip galvanization process for superior corrosion resistance and longevity.

Hexagonal Shape

Standard hexagonal design for easy tightening and reliable performance with wrenches or spanners.

Corrosion Resistance

Hot-dip galvanization ensures superior resistance to rust and corrosion, making these nuts suitable for outdoor and marine environments.

High Strength

Capable of withstanding high tensile stress, making them perfect for heavy-duty applications.

Versatile Use

Commonly used in construction, machinery assembly, solar panel installations, and structural fastening.

Standards Compliance

Meets ISO and DIN standards for quality and performance, ensuring compatibility with other standard fasteners.

 

How we do it
 

Preparation & Cleaning
1.Headed bolts are wheelabrated to remove any excess hot forging scale, then submerged in a caustic soda solution which removes organic material like cutting oil, and then quickly rinsed in water.
2.Next, the bolts are submerged in sulfuric acid to etch the surface of the steel. This allows the zinc to penetrate the surface layer of the fastener. Again the bolts are rinsed.
3.The final preparation phase requires the bolts to be submerged in a flux solution which facilitates the reaction of the zinc to the steel.

 

Hot-Dip Galvanizing
1.The coating process involves completely immersing the bolts in a tank containing 70 tons of 840°F molten zinc. The material will remain in the tank until the zinc has metallurgically bonded to the steel. This time varies depending on the diameter, steel grade, and a number of other factors.
2.A crane lifts the material while the zinc is still liquid and a high-speed spinner functions like a centrifuge to remove the excess zinc from the threads. This produces the highest quality threads and trouble-free nut fit.

 

Inspection & Packaging
1.Parts are water cooled to solidify the zinc and to allow immediate handling.
2.Each bolt is inspected to ensure all fasteners will take nuts and you will not experience installation nightmares in the field. Product is packaged professionally and clearly labeled for easy identification.

 

Performance grade of hot-dip galvanized bolt

 

The quality of hot-dip galvanized bolts is 4.8 and 6.8, like 8.8; 12.9; 10.9 will be lowered when hot-dip galvanizing, so when purchasing hot-dip galvanized screws, be sure to consult clearly before placing an order. When purchasing hot-dip galvanized bolts, you must understand the grade of hot-dip galvanized bolts.

What is the thickness of the galvanized layer of hot-dip galvanized bolt

 

 

The American Standard has completed a large number of tests for various screws and bolts, with medium-sized bolts (M6~M10), galvanized thickness of about 5-8 microns, appearance, and corrosion resistance without hydrogen embrittlement annealing; performance level of hot-dip galvanized ordinary bolts: 4.8- 10.9, specifications M12-M48. The thickness of the hot-dip galvanized coating is ≥ 54μm.

 

Hot-dip galvanized bolt used for

 

The coating of hot-dip galvanized bolts is thick, generally 30-60 microns, and the coating has a high anti-corrosion ability. Hot-dip galvanized bolts are very suitable for long-term rust prevention of steel parts exposed to work outdoors (such as highway and high-speed rail fence projects, large power towers, tunnel supports, and other relatively “rough” workpieces). Older iron water pipes were also hot-dip galvanized. In addition, due to high strength and corrosion resistance, hot-dip galvanized bolts are increasingly becoming the first choice bolts for power tower signal towers and highway guardrails.

 

Certifications

 

 

● ISO 9001 certified manufacturing process for quality assurance.
● Complies with DIN, ANSI, and BS standards.

 

Packaging

 Packaged in bulk or individual boxes depending on your order requirements.
Available in standard or custom packaging for easy handling and storage.

 

Certificates

 

 

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FAQ

 

Q: Are you a factory or a trading company?

A: We are manufacturer

Q: Where are your main customers located?

A: Our customers are mainly from North America, Europe and Southeast Asia

Q: How many years of foreign trade experience do you have?

A: We have nearly 20 years of foreign trade experience

Q: Do you have a minimum order quantity requirement?

A: No, our company has a certain amount of inventory for regular products.

We're professional galvanized parts manufacturers and suppliers in China, specialized in providing high quality customized service. We warmly welcome you to buy cheap galvanized parts for sale here and get free sample from our factory. For price consultation, contact us.

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