Is GB/T 24816-2017 the standard for G80 in China?
Is GB/T 24816-2017 the standard for G80 in China?
In China, GB/T 24816-2017 applies to short-link steel chains for general lifting purposes, primarily for Grade 8 chains with medium precision. The standard specifies dimensions, materials, manufacturing processes, acceptance criteria, and safety requirements.
1. G80 Materials and Manufacturing
Grade 80 lifting chains are typically manufactured from high-quality alloy steel, such as 20Mn2A or 8620, to ensure high strength and toughness. The chains undergo welding, heat treatment, and testing in accordance with ISO 1834.
2. G80 Safety Performance
Grade 80 lifting chains feature a high safety factor, typically 4 times the working load, and are tested at 2.5 times the working load to ensure safety and reliability during use.
3. G80 Technical Specifications
Key technical specifications for Grade 80 lifting chains include:
- **Chain Diameter Range**: 6 mm to 45 mm.
- **Working Load**: Varies with chain diameter, ranging from 11 kN (6 mm) to 180 kN (24 mm).
- **Breaking Load**: Typically 4 times the working load.
4. G80 Applications
Grade 80 lifting chains are widely used in high-precision calibration chains, lifting operations, and other applications requiring high-strength connections, such as construction sites, ports, factories, and specialized industries like aerospace and nuclear power generation.
5. G80 Surface Treatment
Grade 80 lifting chains are available with various surface treatments, including polishing, blackening, immersion coating, plastic coating, and electroplating, to suit different working environments.
6. G80 Standards and Certifications
The manufacturing and testing of Grade 80 lifting chains comply with international standards such as ISO 3077 and EN818-2.
7. G80 Precautions
- The use and maintenance of Grade 80 lifting chains should follow relevant standards, such as ISO 3056.
- The operating temperature range for the chains is -40°C to +400°C.
In summary, Grade 80 lifting chains are essential components in modern lifting operations due to their high strength, safety, and versatility. SINOSTAR can provide G80 rigging and lifting chains in accordance with the Chinese standard preparation GB/T 24816-2017, while the manufacturing process and testing comply with international standards such as ISO 3077 and EN818-2, and the quality is strictly controlled to ensure safety and reliability. For any needs, please contact us.