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This standard on structural bolting reflects the situation in Europe where two technical solutions exist to achieve the necessary ductility of bolt/nut/washer assemblies.

In coal mine roadway, the anchor rock bolt is one of the most important materials in a supporting role, Anyang Longteng heat treatment material co., LTD., a new heat treatment process, greatly improving the strength and impact toughness of ordinary steel anchor, to solve the ordinary rock bolt hit problem

Here are black oil treated M24 stud bolt and M36 hex bolt packaged in wooden boxes. If you are interested, please feel free to contact info@high-strength-steel.com now!

Anti-corrosion steel and special marine grade stud bolts & nuts are used in the ship building industry which are being manufactured by Longteng with the rich experience in producing big bolt with high tensile strength for wind towers

If a metal material factory has passed the ISO 9001 certificate issued by an EU-authorized certification body, and the metal material meets the European material specifications, the factory can issue an EN10204-3.1 material certificate to its customers.

Most wind generator mainly used in wind farms adopt anchor cage foundation, main function of anchor plate is to connect the bolt and concrete structure

In the design and construction of mining roof bolts support, support forms and parameters are selected based on experience or engineering analogy, so there are some problems, such as difficult roadway maintenance, low coal production rate and tight mining replacement.

Here is a sample of small steel mill for rock anchor bolt production. Steel Mill adopts all rolling system, the air and gas – double heat furnace, use steel billet as raw material, with alternate arrangement of 6 roughing mills, and finishing mill group

Nowadays, rebar rock bolt tunnel support technology has become an indispensable technology in coal roadway support. In the supporting system, rebar rock bolt is the most widely used product. Here are some details of how high quality rebar rock bolt is manufactured:

The high strength hot-rolled structural tie rod used in Zunyi Science and Technology Museum has a diameter of 80mm, a length of 1L643m, 1L323m and 1L418m, respectively, and tensile strength of not less than 650MPa.