DIAGRAMS of GRADE 30 CHAIN
GRADE 30 CHAIN SPECS
| TRADE SIZE | MATERIAL DIAMERTER | WORKING LOAD LIMIT | PROOF TEST | BREAKING FORCE MINIMUM | MAX LENGTH PER 100 LINKS | MAX WEIGHT PER 100 FEET | ||||||
| IN | MM | LBS | KG | LBS | KN | LBS | KN | IN | M | LBS | KG | |
| 3/16 | 0.218 | 5.5 | 750 | 340 | 1500 | 6.7 | 3000 | 13.3 | 99 | 2.51 | 42 | 19 |
| 1/4 | 0.281 | 7.1 | 1250 | 570 | 2500 | 11.1 | 5000 | 22.2 | 104 | 2.64 | 76 | 34 |
| 5/16 | 0.343 | 8.7 | 1900 | 860 | 3800 | 16.9 | 7600 | 33.8 | 114 | 2.89 | 115 | 52 |
| 3/8 | 0.406 | 10.3 | 2650 | 1200 | 5300 | 23.6 | 10600 | 47.2 | 128 | 3.25 | 166 | 75 |
| 7/16 | 0.468 | 11.9 | 3500 | 1590 | 7000 | 31.1 | 14000 | 62.3 | 142 | 3.60 | 225 | 102 |
| 1/2 | 0.531 | 13.5 | 4500 | 2040 | 9000 | 40.0 | 18000 | 80.1 | 156 | 3.96 | 289 | 131 |
| 5/8 | 0.656 | 16.7 | 6900 | 3130 | 13800 | 61.4 | 27600 | 122.8 | 194 | 4.92 | 425 | 193 |
| 3/4 | 0.781 | 19.8 | 9750 | 4420 | 19500 | 86.7 | 39000 | 173.5 | 220 | 5.59 | 612 | 278 |
DESIGN of G30 CHAIN
GRADE
- 30
FINISH
- Self-Colored Finish Or Galvanized Finish
STANDARDS
- Meets or exceeds OSHA, Government, NACM, and ASTM specification requirements
ORIGIN
- Made in China
APPLICATION
- Used for a variety of applications
MATERIAL
- Carbon steel
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FAQ of GRADE 30 PROOF COIL CHAIN
What is Grade 30 Chain?
Grade 30 chain is a carbon steel chain designed for light to moderate tasks like securing cargo or towing. It has a minimum tensile strength of 30,000 pounds per square inch (psi), making it a reliable choice for general use. It’s not ideal for heavy lifting but works well for everyday applications.
Grade 30 Chain Strength
Grade 30 chain has a tensile strength of 30,000 psi. The actual strength depends on the diameter of the chain. For instance, a 3/8-inch chain typically handles about 6,600 pounds. It’s strong enough for securing and light-duty tasks, but avoid using it for critical heavy-duty lifting.
Grade 30 Chain Breaking Strength
The breaking strength of Grade 30 chains depends on their size. For example, a 5/16-inch chain has a breaking strength of around 5,400 pounds, while a 3/8-inch chain can handle approximately 6,600 pounds. Always choose a chain with a higher breaking strength than the load you intend to secure.
Grade 30 Chain Working Load Limit
The WLL is a safe working load limit based on the chain’s breaking strength. For example, a 5/16-inch Grade 30 chain has a WLL of 2,600 pounds. This ensures safety during use and prevents accidental failure. Be sure to stay within the WLL for all tasks.
Which Types of Applications Are Grade 30 Chains Suitable For?
Grade 30 chains are perfect for general use in light-duty tasks. They’re commonly used in securing trailers, farm equipment, or during shipping. It’s ideal for applications like tie-downs or other situations that don’t require high tensile strength.
Grade 70 vs Grade 30 Chain: Which Is Better for Heavy-Duty Applications?
Grade 70 chain is stronger and better suited for heavy-duty applications like lifting or towing heavy loads. It offers higher tensile strength and is commonly used for lifting and securing large equipment. Grade 30 is better for lighter, non-critical tasks and is more affordable.
Grade 43 vs Grade 30 Chain: What’s the Difference?
Grade 43 chain offers more strength than Grade 30, making it suitable for medium-duty tasks like lifting or securing equipment. Grade 30, however, is best for lighter applications like securing cargo and other everyday uses. If strength is critical, choose Grade 43 over Grade 30.
Is Grade 30 Chain Durable for Outdoor Use?
Grade 30 chain is durable enough for outdoor use, but it may rust or corrode over time due to exposure to moisture. Applying a protective coating or using it in dry conditions can help extend its lifespan. If you need a more durable option for heavy outdoor tasks, consider Grade 70 or 80.
Can I Use Grade 30 Chain for Lifting?
Grade 30 is not designed for heavy lifting but can be used for light lifting tasks. Always ensure you stay within the Working Load Limit to prevent failure. For critical or heavy-duty lifting, it’s best to use Grade 70 or Grade 80 chains.
