DIN939 Thick double-head bolts GB898A is a specification for double-head bolts specified in the Chinese national standard (GB). This type of bolt is characterized by threads on both ends and a smooth rod or partial thread in the middle.The GB898A standard specifies in detail the dimensions, tolerances, mechanical properties and other requirements for this type of double head bolt.
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:
HIGH STRENGTH: GB898A standard double head bolts are usually made of high strength materials and are able to withstand large preloads and working loads. Reliability: With threads on both ends, these bolts can be used to connect two components with through holes, providing a reliable connection. Reusable: Compared to welded or other permanent connections, double-ended bolts allow for disassembly and reuse for easy maintenance and repair. Versatility: GB898A standard double head bolts are available in a wide range of sizes and lengths to suit different applications.
Scope of Application
Mechanical connections: In mechanical manufacturing, double head bolts are commonly used to connect parts that require high strength connections, such as engine parts, pumps and compressors. Steel construction: In steel construction, double head bolts are used to connect beams, columns and other structural components, especially where high strength and removability are required. Bridge construction: In bridge construction, double-ended bolts are used to connect various parts of the bridge, such as the deck and supporting structures. Mining Machinery: In mining machinery, double head bolts are used to connect heavy mechanical components such as excavators and drilling rigs.
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.
