introduction to products：
Hot-dip galvanized hex bolts: They feature a hexagonal head and a threaded shank. Crafted from carbon steel, these bolts undergo a hot-dip galvanizing process. In this process, the bolts are immersed in molten zinc, forming a thick and uniform zinc coating on the surface. This coating endows them with excellent corrosion resistance, allowing them to withstand harsh environments such as humid, rainy, or coastal areas. They possess high strength and good durability, capable of bearing substantial loads. Available in various sizes (ranging from M6 to M30) and strength grades (like 8.8, 10.9), they are extensively applied in steel structure construction (such as factory buildings, bridges), highway guardrail installation, and outdoor machinery assembly. Wherever long-term rust prevention for fasteners is required, these hot-dip galvanized hex bolts are a reliable choice.
Instructions for Use：
Hot-dip galvanized hex bolts are used for firmly fastening components. First, align the holes in the parts to be connected. Insert the bolt through these holes. Then, use a wrench that matches the size of the hexagonal head (such as a socket wrench or an open-end wrench) to tighten the bolt. If it's a through-hole connection, pair the bolt with a nut on the opposite side of the parts. Tighten the bolt to the appropriate torque as per the project requirements. Over-tightening may damage the zinc coating or strip the threads, while under-tightening could lead to loose connections.
Hebei Duojia Metal Products Co., Ltd. was formerly known as Yonghong Expansion Screw Factory. It has over 25 years of professional experience in manufacturing fasteners. The factory is located in the China Standard Room Industrial Base - Yongnan District, Handan City. It conducts online and offline production and manufacturing of fasteners as well as one-stop sales service business.
The factory covers an area of over 5,000 square meters, and the warehouse covers an area of over 2,000 square meters. In 2022, the company carried out industrial upgrading, standardized the production order of the factory, improved the storage capacity, enhanced safety production capacity, and implemented environmental protection measures. The factory has achieved a preliminary green and environmentally friendly production environment.
The company has cold pressing machines, stamping machines, tapping machines, threading machines, forming machines, spring machines, crimping machines, and welding robots. Its main products are a series of expansion screws known as "wall climbers".
It also produces special-shaped hook products such as wood tooth welding sheep eye ring screws and machine tooth sheep eye ring bolts. In addition, the company has expanded new product types from the end of 2024. It focuses on pre-buried products for the construction industry.
The company has a professional sales team and a professional follow-up team to safeguard your products. The company guarantees the quality of the products it offers and can conduct inspections on the grades. If there are any problems, the company can provide professional after-sales service.
Our export countries include Russia, South Korea, Britain, France, Germany, Italy, Canada, Mexico,Brazil, Argentina, Chile, Australia, Indonesia, Thailand, Singapore, Saudi Arabia, Syria, Egypt, Tanzania.Kenya and other countries. Our products will be spread all over the world!
WHY CHOOSE US?
1.As a factory-direct upplier,we eliminate middleman margis to offer you the most competitive pricing for high-quality fasteners.
2.our factory pass the ISO 9001 and AAA certification .we have the hardness testing and the test of zinc coating thickness for galvanized products.
3.with full contrl over production and logistic,we guarantee on-time delivery even for urgnt orders .
4.our engineering team can customize faseners from prototype to mass production , including unique thread designs and anti-corrosion coatings.
5.From carbon steel hex bolts to high-tensile anchor bolts ,we provide a one-stop solution for all your fastener needs.
6.If any defect is found ,we’ll reship replacements within 3weeks of our cost .
