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.
Grade 30 vs Grade 70 Chain: What's the Difference?
When choosing a chain for industrial and commercial applications, understanding the differences between Grade 30 and Grade 70 proof coil chains is crucial. Grade 30 is suitable for light to medium-duty tasks, while Grade 70 offers higher strength for heavy-duty applications. Below is a comparison of these two grades, highlighting their respective strengths and ideal use cases.
Comparison of Grade 70 vs Grade 30 Chains:
- Tensile Strength:
- Grade 70: Capable of withstanding 10,000 psi per ton.
- Grade 30: Has a tensile strength of 6,600 psi per ton.
- Load Capacity:
- Grade 70: Designed to handle much heavier loads, making it suitable for demanding tasks like towing, hauling, and lifting.
- Grade 30: Ideal for light to medium-duty applications, where load requirements are less critical.
- Durability:
- Grade 70: Offers superior strength and durability, with higher resistance to wear and damage from heavy use.
- Grade 30: Less durable in comparison, best for general-purpose tasks where extreme durability is not required.
- Application Suitability:
- Grade 70: Best for heavy-duty applications such as:
- Towing
- Hauling
- Lifting
- Grade 30: More appropriate for general-purpose tasks such as:
- Securing loads
- Transporting goods
- Light lifting
- Grade 70: Best for heavy-duty applications such as:
- Cost:
- Grade 70: Typically higher in cost due to its added strength and durability.
- Grade 30: More cost-effective and budget-friendly for lighter tasks.
Grade 30 vs Grade 43 Chain: What’s the Difference?
When selecting the right chain for your business needs, understanding the differences in strength, durability, and flexibility is essential. Grade 43 and Grade 30 chains are both commonly used, but they serve different purposes depending on the load requirements. Here’s a detailed comparison between Grade 43 and Grade 30 chains to help you make an informed decision.
Comparison of Grade 30 vs Grade 43 Chain:
- Tensile Strength:
- Grade 43: Has a minimum tensile strength of 7,500 psi per ton.
- Grade 30: Has a tensile strength of 6,600 psi per ton.
- Load Capacity:
- Grade 43: Ideal for moderate-strength applications, including towing and hauling, where higher load-bearing is required.
- Grade 30: Best suited for general-purpose use with lighter loads such as securing or transporting goods.
- Durability:
- Grade 43: Offers greater durability, able to withstand more stress and wear over time.
- Grade 30: While still reliable, it is less durable than Grade 43, and more prone to wear under heavy loads.
- Flexibility:
- Grade 43: While stronger and more durable, it tends to be less flexible than Grade 30, which may limit its versatility in certain applications.
- Grade 30: More flexible, making it a good option for applications where bending or twisting the chain is necessary.
- Cost:
- Grade 43: Typically more expensive due to its enhanced strength and durability.
- Grade 30: A more budget-friendly option for less demanding tasks.
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.
What is Grade 30 Proof Coil Chain?
Grade 30 proof coil chain is a versatile and cost-effective solution designed for general-purpose use. Made from low-carbon steel, it undergoes a heat treatment process to enhance strength and durability. This chain is ideal for tasks like securing loads, light lifting, and transporting items. While not suitable for heavy-duty applications, Grade 30 provides reliable performance in medium-strength environments. Its balanced flexibility and strength make it an excellent choice for industries requiring dependable chain solutions at an affordable price.
What Factors Affect the Durability of Grade 30 Proof Coil Chain?
The durability of Grade 30 proof coil chain depends on several factors:
- Corrosion: Exposure to moisture, saltwater, or chemicals can lead to rust, weakening the chain.
- Wear: Continuous use can cause links to elongate or show signs of wear, reducing strength.
- Temperature: Extreme heat or cold can alter the steel’s properties, making it more brittle.
- Improper Usage: Exceeding the recommended load limits or improper storage can shorten the chain’s life.
To ensure long-lasting performance, store Grade 30 chains in a dry environment, conduct regular inspections, and lubricate them to prevent rust and corrosion.
What Maintenance is Required for Grade 30 Proof Coil Chain?
Maintaining Grade 30 proof coil chain is crucial for ensuring optimal performance and extending its lifespan:
- Regular Inspection: Check for signs of wear, such as stretched links or cracks, to prevent failure.
- Cleaning: Remove dirt, debris, and corrosive materials that may weaken the chain over time.
- Lubrication: Apply a light coat of oil or grease to prevent rust and reduce friction between links.
- Proper Storage: Keep the chain in a dry, cool place to avoid exposure to elements that could lead to corrosion.
By following these maintenance guidelines, you can significantly improve the lifespan and reliability of your Grade 30 chain, ensuring it performs safely and efficiently.
