roduction to products：
Hex Bolt 304 Stainless Steel Internal Expansion: This product combines a hex bolt with an internal expansion design, crafted from high - quality 304 stainless steel. The hex bolt enables easy tightening with common wrenches, while the internal expansion feature ensures a secure hold within the drilled hole. The 304 stainless steel offers excellent corrosion resistance, making it suitable for various environments, from indoor settings to outdoor and humid areas. It is a reliable fastening solution, widely used in construction for attaching structural elements to concrete or brick, in industrial applications for mounting heavy machinery, and in furniture installation for firmly securing components, providing a stable and long - lasting connection.
Instructions for Use：
Hex Bolt 304 Stainless Steel Internal Expansion is used to anchor objects to base materials such as concrete, brick, or wood. First, drill a hole in the base material with a diameter appropriate for the anchor. Clean the hole to remove any debris. Insert the hex bolt with the internal expansion part into the hole. Place the object you want to secure over the bolt, and then use a wrench to tighten the hex bolt. As you tighten the bolt, the internal expansion mechanism activates, expanding against the inner wall of the hole, creating a firm grip and securing the object in place. Avoid overtightening to prevent damage to the base material or the bolt itself.
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 .
