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HDG Bolt Manufacturer In China

Ningbo Teng Qi Fasteners Co., Ltd is a leading HDG bolt manufacturer in China. HDG stands for “Hot-Dip Galvanized,” and an HDG bolt refers to a bolt that has undergone a hot-dip galvanizing process. Hot-dip galvanizing is a method used to protect steel and iron from corrosion by coating them with a layer of zinc. Hot-dip galvanized bolts are known for their excellent corrosion resistance and are commonly used in outdoor applications, construction, and in environments where exposure to moisture, chemicals, or corrosive elements is a concern. The thick layer of zinc provides a barrier that protects the underlying steel from rust and corrosion.

hdg bolt manufacturer

Specification of HDG Bolt:

HDG bolts are known for their excellent corrosion resistance, making them suitable for outdoor and corrosive environments.

Product nameHDG Bolts
Size and Length:Metric: M6-M100
Imperial:1/4" to 4"
Thread Type and Pitch:Metric: Up to 800mm
Imperial: Up to 30"
Material:carbon steel, alloy steel
Strength Grade:Metric: 400MPA/800MPA/1000MPA/1200MPA
Imperial: 125ksi/175ksi
Head Type:Hex head/flange head/square head/heavy hex head/round head
Finish and Coating:Hot-Dip Galvanizing
Industry Standards:ISO/ASTM/ASME/DIN/UNI/JIS
Packaging:Boxes/cartons into wooden pallets
Application:Construction/Agricultural Machinery/Industrial Structures/Equipment and Machinery/Infrastructure

FAQ about HDG Bolt:

1.In situations where HDG bolts are used in combination with dissimilar metals or materials, what are the best practices for minimizing galvanic corrosion risks and ensuring long-term integrity?

To minimize galvanic corrosion risks, consider using insulating materials (gaskets, coatings) between dissimilar metals. Select compatible materials to reduce potential for galvanic corrosion. Properly design connections to minimize direct contact between dissimilar metals. Regular inspection and maintenance can detect and address corrosion issues early.

2.Can HDG bolts be used in high-temperature applications?

 HDG coatings can withstand moderately high temperatures.

3.What is the difference between HDG and zinc-plated bolt?

HDG bolts have a thicker, more durable zinc coating than zinc-plated bolts. HDG provides better corrosion resistance and is suitable for harsher environments.

4.What industries commonly use HDG bolts?

HDG bolts are used in various industries, including construction, infrastructure, utilities, transportation, and agriculture, where corrosion resistance is vital.