GB799 7-Character 9-Character L-Shaped Anchor Bolt

The GB799 standard defines the specifications for L-shaped anchor bolts in China, which are widely used in various construction and engineering applications. The L-shaped anchor bolt is designed to anchor equipment or structures to concrete or other solid materials, ensuring stability and resistance to displacement. 1. Basic Definition L-Shaped Anchor Bolt: This type of anchor bolt has an "L" shape, meaning it has a straight shaft with a 90-degree bend at one end, creating the "L" configuration. It is typically used for securing heavy equipment, structural components, or machinery to concrete foundations or other solid surfaces. 7-Character L-Shaped Anchor Bolt: This version of the L-shaped anchor bolt has a standard length and bend configuration according to the GB799 standard. It is commonly used for medium-strength applications where the load-bearing requirement is moderate. 9-Character L-Shaped Anchor Bolt: This variant of the L-shaped anchor bolt is generally thicker and longer than the 7-character bolt, designed for high-strength applications requiring greater load-bearing capacity. 2. Specifications and Dimensions According to GB799, the dimensions of L-shaped anchor bolts are determined by both the thread size and the length of the bolt. The 7-character and 9-character L-shaped anchor bolts differ mainly in their diameter and length: Thread Size: L-shaped anchor bolts are typically designed with standard thread sizes such as M12, M16, M20, M24, M30, and larger, depending on the load requirement and application. Bolt Length: The length of the straight part of the anchor bolt, before it bends, varies depending on the application. The 7-character bolt typically has a shorter length, while the 9-character bolt is longer and designed for greater anchorage depth. Bend Angle: The angle at which the anchor bolt bends is typically 90 degrees, but can sometimes vary slightly to fit specific application requirements. Bend Radius: The bend radius is standardized to ensure that the bolt’s strength and integrity are not compromised during installation. Typical Dimensions (Example): M16 x 200mm (straight length) for 7-character L-shaped bolts. M20 x 300mm (straight length) for 9-character L-shaped bolts. 3. Materials and Surface Treatment L-shaped anchor bolts are manufactured from high-strength materials to ensure durability and resistance to harsh environmental conditions. Materials: Carbon Steel (e.g., Q235, 45#): Commonly used for standard applications. Alloy Steel (e.g., 35CrMo, 40Cr): Used for high-strength applications that require resistance to impact and tensile forces. Stainless Steel (e.g., 304, 316): Used for applications in corrosive environments such as marine, chemical plants, and other harsh conditions. Surface Treatment: Galvanizing (Zinc Plating): Provides corrosion resistance and is commonly used for outdoor or exposed applications. Black Oxide: This provides a protective layer that increases corrosion resistance and enhances the aesthetic of the bolt. Hot-Dip Galvanizing: Applied for high-corrosion environments, offering excellent protection for the anchor bolts. 4. Performance and Load-Bearing Capacity The load-bearing capacity of L-shaped anchor bolts depends on their material, dimensions, and the concrete or foundation they are embedded in. Key factors affecting performance include: Strength of Concrete: The bond between the anchor bolt and concrete is critical for determining load capacity. The higher the strength of the concrete, the higher the load the anchor bolt can bear. Bolt Material: Higher-grade materials like alloy steels or stainless steel provide better performance under high-stress conditions. Size and Length: Larger and longer bolts (like the 9-character anchor bolts) typically offer higher load-bearing capacity compared to the smaller 7-character bolts.

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Fastener

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Product Details

Product Attributes

Place Of Origin: China

Brand: ZHONGSHI FASTENER (JIANGSU) CO., LTD

Supply Ability & Additional Information

Supply Ability: 15-90 days

Transportation: Ocean,Rail transport,Land,Others

Payment Type: T/T, L/C, D/P，Bank Guarantee，Others

Incoterm: FOB,FCA, CFR, CIF, FAS, DDP, DAP, Others

Specification：Customized on Request

We'll help you configure a system that meets all of your research needs.

Typical applications

Building Foundations: Used to anchor structural elements such as columns, beams, and steel structures to concrete foundations.

Bridge Construction: Used in anchoring bridge supports and piers.

Heavy Machinery and Equipment: Anchoring large machinery or industrial equipment to prevent movement during operation.

Towers and Poles: Used in the installation of transmission towers, communication poles, and other tall structures.

Industrial Equipment: Used to secure machinery or components in places like factories, refineries, and power plants.

Packaging & Delivery

Selling Units: Set/Sets

Package Type: asked by buyer

Company Overview

Founded in 1990, TongYang is a professional company specializing in developing and manufacturing chemical machinery and equipment for customers ,It has manufacturing license of grade A2 (the third type of pressure vessel) issued by state general administration of market supervision, license Key: :TS2210D94-2023. Tongyang has always been committed to the research and development, production, application of chemical machinery and equipment in fine chemical, petrochemical, food, biological and pharmaceutical industries. Our technology in develop distillation tower and separation equipment attain domestic leading level, Keep pace with international advanced level.

Provide turnkey projects

Our team can provide you with turnkey engineering, you do not have to worry about the installation is not professional, we will complete the installation and debugging according to your specific requirements, at the same time, a professional training, to solve your worries.

Competitive Advantage

Abundant experience: more than 30 years experience in non-ferrous metal cladding and production;
Technical consulting service: technical consulting on material, welding, NDE, Welding, Heat treatment ;
Independent inspection service; in-process inspection, final inspection; Hydrostatic testing etc;
Transportation: have own export license, Yangzhou Port and Shanghai Port , 2.4 kilometers away from Yangzhou Port and 226 kilometers away from Shanghai Port.

Varieties of manufacturing standards to meet the needs of the global market

GB150-2011;
ASME U, U2 Certificate;
GOST 34347;
ISO14001 , ISO 45001, ISO 9001;
ASME SEC VIII DIV.1，ASME SEC VIII DIV.2 ; f.PED 97/23/EC with CE certificate;

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