Galvanised Concave Head Hexagonal Bolts GB30 are fasteners made of carbon steel with a zinc-plated surface to improve their corrosion resistance. Its grade 4.8 indicates that it has a certain tensile and yield strength and is suitable for a wide range of connection applications. The concave head design makes the head of the bolt more compact, making it easy to use in certain space-constrained environments.
Main body material: carbon steel, with good mechanical properties and processing performance.
Performance grade: Grade 4.8, indicating that its tensile strength is not less than 400MPa and the ratio of yield strength to tensile strength is 0.8.
Bentley has industry-leading stainless steel resource integration capabilities, and rich raw material reserves, to ensure that thousands of leading position in the stainless steel wire processing industry. The combination of production, university and research, upstream and downstream linkage, and the special research and development of high-standard specific materials ensure the need for thousands of professional materials.
Unique advantages of GB30 Strong corrosion resistance: the galvanised layer can effectively resist moisture and corrosive environments, prolonging the service life of the bolts.
High strength: Grade 4.8 bolts undergo rigorous testing and quality control to ensure stability under high loads.
Easy to install: they can be easily installed and tightened with ordinary spanners or torque wrenches.
Scope of
application
Construction engineering: used to connect structural members, beams and columns, support frames, etc., to ensure the firmness and safety of buildings.
Mechanical field: to connect machine parts, equipment components, etc. to provide stable support for industrial production.
Automotive Manufacturing: Used to connect body, engine and other components in the automotive assembly process.
Aerospace: in the aerospace field, although grade 4.8 bolts may not be the preferred choice, they are still used in certain auxiliary or secondary connection occasions.
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.
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.
