A round head hexagonal internal expansion bolt usually consists of a round head, a hexagonal drive section and an expansion tube. The expansion tube spreads inside the wall as the bolt is tightened, providing a secure fixing. These bolts have a disc-shaped head that provides a large contact area for applications that require high torque. They are commonly used in areas such as interior decoration, furniture manufacturing, and fixing of building structures.

Expansion bolt consists of countersunk head bolts, expansion tubes, flat washers, spring washers and hexagonal nuts, the use of impact drills (hammers) must first be drilled in the fixed body of the corresponding size of the holes, and then the bolts, expansion tubes loaded into the holes, tighten the nut can be made to make the bolts, expansion tubes, mounting parts and the fixed body of the expansion between the body as a whole.

Carbon Steel: Typically used for general applications.

Stainless Steel: For environments where corrosion resistance is required.

Alloy Steels: Used in applications requiring high strength or high temperature resistance.

Advantage:

Aesthetics: The round head design allows the bolt to sit flush with the surface after installation, providing a neat appearance. High Strength: The hexagonal drive section allows for greater torque to be applied with a wrench or power tool, making it suitable for high load applications. Quick Installation: Expansion bolts are quick and easy to install, improving construction efficiency. Wide applicability: Suitable for a wide range of materials including concrete, brick and wood. Corrosion resistance: Some models are made of stainless steel, making them suitable for wet or corrosive environments.

Scope of Application

Building structure fixing: for fixing windows, door frames, brackets and other building components. Machinery and equipment installation: fixing machine bases, pipes and other equipment to ensure their stability and safety. Furnishing and decorating: for fixing decorations on plasterboard walls, hanging objects and installing furniture, etc. Electrical and plumbing systems: fixing wire channels, pipes and fittings.

Quality Certification

Hebei Bentley is ISO9001:2015 certified and equipped with relevant certificates for quality assurance. Due to its specific dimensions and performance levels, it is suitable for a wide range of industrial and commercial scenarios including, but not limited to: machine building, construction work, transport, energy industry, timber frame connections.

Quality inspection

Bentley has invested a huge amount of money to builda product testing laboratory, equipped with importedhigh-end instruments:such as thread comprehensivescanners, high temperature tensile testing machines,high frequency fatigue testing machines, etc., to ensurethat all products are strictly tested before leaving thewarehouse to ensure the reliability of customers duringuse.