Product Description
G30 Proof Coil Link Chain US Type Nacm 2571
| NOMINAL SIZE | MATERIAL DIAMETER (D) | WORKING LOAD LIMIT | PROOF TEST(MIN) | BREAKING FORCE MIN | INSIDE LENGTH (A) | INSIDE WIDTH (B) | |||||||
| MM | IN | MM | IN | KG | LBS | KN | LBS | KN | LBS | MM | IN | MM | IN |
| 4 | 1/8 | 4 | 0.156 | 180 | 400 | 3.8 | 800 | 7.2 | 1600 | 23.9 | 0.94 | 6.4 | 0.25 |
| 5.5 | 3/16 | 5.5 | 0.217 | 365 | 800 | 7.2 | 1500 | 14.4 | 3200 | 24.8 | 0.98 | 7.7 | 0.3 |
| 7 | 1/4 | 7 | 0.276 | 580 | 1300 | 11.6 | 2600 | 23.2 | 5200 | 31.5 | 1.24 | 9.8 | 0.38 |
| 8 | 5/16 | 8.4 | 0.331 | 860 | 1900 | 16.9 | 3800 | 33.8 | 7600 | 32.8 | 1.29 | 11.2 | 0.44 |
| 10 | 3/8 | 10 | 0.394 | 1200 | 2650 | 23.5 | 5300 | 47.2 | 10600 | 35 | 1.38 | 14 | 0.55 |
| 11.9 | 7/16 | 11.9 | 0.488 | 1680 | 3700 | 32.9 | 7400 | 65.8 | 14800 | 41.5 | 1.64 | 16.6 | 0.65 |
| 13 | 1/2 | 13 | 0.512 | 2030 | 4500 | 40 | 9000 | 80 | 18000 | 45.5 | 1.79 | 18.2 | 0.72 |
| 16 | 5/8 | 16 | 0.63 | 3130 | 6900 | 61.3 | 13800 | 122.8 | 27600 | 56 | 2.2 | 20 | 0.79 |
| 20 | 3/4 | 20 | 0.787 | 4800 | 10600 | 94.3 | 21200 | 188.6 | 42400 | 70 | 2.78 | 25 | 0.98 |
| 22 | 7/8 | 22 | 0.866 | 5810 | 12800 | 114.1 | 25600 | 228.2 | 51200 | 77 | 3.03 | 27.5 | 1.08 |
| 26 | 1 | 26 | 1.02 | 8140 | 17900 | 159.1 | 35800 | 318.2 | 71600 | 90.9 | 3.58 | 31.7 | 1.25 |
Features:
1. G30 Proof Coil chain is made from low carbon steel and is a general utility chain for such uses as farm, log chain, tow chain and switch chain.
2. G30 chain has long link (made to NACM specs) and short link (made to ASTM 80 specs). Long Link chain has a longer inside length to save weight and reduce cost. Both long and short link chain have the same strength ratings. Generally short link chains are more flexible than long link chains.
Packaging
Other Popular Chain Types
| U.S. Standard Chain | ||
| US Type G30 Proof Coil Chain | NACM – Straight Link Machine Chain | Single Loop Chain |
| US Type G43 High Test Chain | NACM – Twist Link Machine Chain | Double Loop Chain |
| US Type G70 Transport Chain | NACM – Straight Link Coil Chain | Single Jack Chain |
| US Type CZPT Alloy Steel Lifting Chain | NACM – Twist Link Coil Chain | Double Jack Chain |
| US Type G100 Alloy Steel Lifting Chain | NACM – Passing Link Chain | SASH Chain |
| DIN Standard Chain | ||
| DIN 763 Link Chain | DIN 766 Link Chain | DIN 5686 Double Loop Chain |
| DIN 764 Link Chain | DIN 5685 Short/Long Link Chain | |
| U.K. Type Chain | ||
| UK Type Short Link Chain | UK Type Medium Link Chain | UK Type Long Link Chain |
| Australian Standard Chain | ||
| Australian Short Link Chain | Australian Medium Link Chain | Australian Long Link Chain |
| Australian Grade 70 Link Chain | ||
| Korean Standard Link Chain | ||
| Short Link Chain | Long Link Chain | |
Matching Hooks
Our most popular products include Chains, Anchor Chains, Hooks, Shackles, Turnbuckles, Load Binders, Eye Bolts & Eye Nuts, Wire Rope, Wire Rope Clips, Wire Rope Thimble, Swivels, Snap Hook, Rings and links, Webblings, Pulley&Block, Sockets, Stainless Steel Products, etc.
Our Factory
We started as an anchor chain factory, CZPT Anchor Chain Co. Ltd, about 20 years ago in HangZhou, China, and gradually developed into a big manufacturer of marine hardware supplies. At the same time, in order to meet the growing demands from our clients in various business areas, we established our tradingbrand – Powerful Machinery, and expanded our scope to rigging hardware and fasteners, and also set up CZPT partnership with other factories.
Now we’re proud to say that CZPT has ranked as the top supplier on marine & rigging hardware in the northern China!
Our Office
HangZhou CZPT Co., Ltd has eastablished for about 11 years, we specializing in producing and exporting rigging hardwares, high grade chains, blocks & pulleys, steel wire rope, stainless steel and so on. Our products are all designed, manufactured and assembled under strict quality control. We have a professional QC team to do inspections. And we can offer favorable prices, good quality and one-stop sourcing service. We are all ready for every customer and to be the CZPT is our mission.
All members of our company will be very honored if you contact us. We are looking CZPT to cooperating with you in the near future!
Exhibitions
Powerful Machinery FAQ
1.Are you a factory or trading company?
We started as an anchor chain factory about 20 years ago and gradually developed into a big manufacturer in marine supplies.At the same time, to meet the growing demands from our clients in new business areas, we expanded our scope to rigging hardware and fasteners, and other related hardware by setting up CZPT partnership with other factories.Now we’re proud to say that POWERFUL has ranked as a top supplier on chains & rigging hardware in China.
2.Where is your factory located?
Our factory is located at #37, Wenhua Road, Xihu (West Lake) Dis., HangZhou City, ZheJiang Province, China.
You’re welcomed to visit us any time for future cooperation.
3.What products do you supply?
As mentioned above, HangZhou CZPT is capable of supplying:
All kinds of marine supplies, Chains, Rigging hardwares, Fasteners and related hardwares
4.Do you produce them all?
We produce all kinds of chains in our factory, other products in our partner factories.By establishing cooperation agreements & capital injection, we obtained a wide & solid supply chain to meet your demands.
5.How do you control quality?
By setting up quality control points and inspecting at each production process with strict standards, the defective products will be eliminated before packaging and delivery.For partner factories, we use a comprehensive system of quality standards to evaluate the production line.Also our professional QC team will implement the onsite check and finish product check before delivery.
6.Why are you more trustworthy than the other factories?
Quick Response:
We feedback your questions immediately 24 hours a day, 7 days every week.
Competitive Price:
We can provide a more competitive price based on the same quality level by more efficient management in every process.
One-stop Solution:
Just say what you need, and we’ll figure out a one-stop solution for your business to save your time and effort.
7.How do I pay?
We accept 30% payment in advance & 70% before shipment for the first cooperation, either by T/T or L/C.
8.How do I receive the goods?
With our professional transport agents, we are capable of delivery products to most ports all over the world.Door-to-door service is also supported.
FOB, C&F, CIF are most commonly used trade terms.
Our Advantages
1. Quick Response:
Reply your inquiry in 24 working hours.
2. Full English Service:
Experienced staff answer all of your questions in professional and fluent English.
3. OEM & ODM:
Customized size, length and design are available.
4. Creative One-Stop Solutions:
Exclusive and unique solution can be provided to our customer by our well-trained and professional engineers.
We Listen, We Learn & We Love our Costumers!
Best Service, Best Quality & Best Price will be offered!
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Shipping Cost:
Estimated freight per unit. |
To be negotiated|
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| Usage: | Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain, Decoration, Protection, Lifting, Draging, etc. |
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| Material: | Carbon Steel |
| Surface Treatment: | HDG, Zinc Plated, Black, Golden Yellow, Self Color |
| Samples: |
US$ 30/Meter
1 Meter(Min.Order) | Order Sample |
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| Customization: |
Available
| Customized Request |
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Can drag chains be used in aerospace and defense applications?
Yes, drag chains can be used in aerospace and defense applications. The aerospace and defense industries often require reliable and efficient cable management systems to protect and guide cables in various equipment and machinery. Drag chains, also known as cable carriers or cable chains, offer several benefits that make them suitable for these demanding applications:
- Cable Protection: Aerospace and defense equipment often involve complex and sensitive electrical and data cables. Drag chains provide a secure and enclosed pathway for these cables, protecting them from external elements, such as debris, chemicals, and extreme weather conditions.
- Motion Control: Aircraft, spacecraft, and defense systems frequently undergo dynamic movements, including vibrations, acceleration, and deceleration. Drag chains are designed to handle continuous flexing and bending, ensuring that cables can move freely without getting damaged or tangled.
- Space Optimization: In aerospace and defense applications, space is often limited and precious. Drag chains offer a space-efficient solution for cable management, as they keep cables neatly organized and prevent them from cluttering the equipment’s interior.
- Reduced Downtime: The reliable cable protection provided by drag chains minimizes the risk of cable damage, reducing maintenance and downtime associated with cable failures. This is crucial in critical aerospace and defense systems where reliability is paramount.
- Customization: Drag chains are available in various sizes, materials, and configurations, allowing them to be customized to suit the specific needs of aerospace and defense applications. They can be designed to accommodate a wide range of cable types and sizes.
- High-Quality Materials: Drag chains made from high-quality materials, such as stainless steel or reinforced plastics, offer excellent resistance to chemicals, abrasion, and temperature extremes – essential properties in aerospace and defense environments.
- EMI/RFI Shielding: Some drag chains come with EMI/RFI shielding options, ensuring electromagnetic compatibility and protecting sensitive electronics from interference.
Given their robustness, versatility, and ability to handle harsh operating conditions, drag chains have become a valuable cable management solution in aerospace and defense industries, where maintaining signal integrity and system reliability is of utmost importance.

How do drag chains handle cable routing and cable organization?
Drag chains play a crucial role in cable routing and cable organization in various industrial applications. They are designed to efficiently manage and protect cables and hoses, ensuring smooth movement and preventing damage. Here’s how drag chains handle cable routing and organization:
Enclosed Cable Routing:
Drag chains provide an enclosed pathway for cables and hoses, keeping them organized and preventing tangling or entanglement. This enclosed design ensures that cables are neatly arranged and protected from external elements, such as dust, debris, and contaminants.
Smooth Cable Movement:
The interior of drag chains is designed to provide smooth movement for the cables and hoses passing through them. This reduces friction and minimizes wear and tear on the cables, prolonging their lifespan and ensuring reliable operation.
Multiple Cable Compartments:
Many drag chains have multiple compartments, allowing for the separation and organization of different types of cables and hoses. This makes it easier to identify and replace specific cables when needed, streamlining maintenance and reducing downtime.
Adaptability to Cable Sizes:
Drag chains can accommodate various cable sizes and types, making them versatile and suitable for a wide range of applications. The chains can be customized to fit specific cable diameters, ensuring a secure and snug fit for each cable passing through.
Protection from Hazards:
Drag chains shield cables and hoses from potential hazards, such as sharp edges, moving machine parts, or exposure to chemicals. This protection prevents damage and ensures the safety of both cables and personnel working near the equipment.
Cable Length Compensation:
As machines and equipment move, the cables and hoses within them need flexibility to adjust to different positions. Drag chains provide the necessary cable length compensation, allowing the cables to extend and retract smoothly without becoming tangled or causing strain.
Preventing Cable Clutter:
By keeping cables and hoses organized within the drag chain, cable clutter is minimized. This not only improves the overall aesthetics of the equipment but also makes it easier to identify and troubleshoot any cable-related issues.
Overall, drag chains are essential components in industrial cable management systems. They streamline cable routing, protect cables from damage, and ensure smooth movement, contributing to the efficient and reliable operation of machinery and equipment in various industries.

Can drag chains be used in CNC machines and machining centers?
Yes, drag chains can be used in CNC machines and machining centers, and they play a crucial role in managing and protecting the cables and hoses used in these high-precision and automated manufacturing systems.
Benefits of using drag chains in CNC machines and machining centers:
1. Cable Management: CNC machines and machining centers have a complex network of cables and hoses that control various components, such as motors, sensors, and coolant systems. Drag chains provide an organized and secure pathway for these cables, preventing tangling, twisting, and damage during machine operation.
2. Protection: The cables and hoses in CNC machines are exposed to constant movement, debris, and potential hazards. Drag chains shield them from mechanical damage, metal chips, coolant splashes, and other environmental factors, ensuring their longevity and reliability.
3. Reduced Downtime: Efficient cable management with drag chains minimizes the risk of cable failures and the associated downtime for repairs or replacements. This leads to improved productivity and reduced production interruptions.
4. Smooth Operation: Drag chains facilitate smooth movement of cables and hoses as the machine’s moving parts traverse along their programmed paths. This prevents cable snags and interference with the machine’s operation, contributing to more accurate and precise machining.
5. Versatility: CNC machines and machining centers come in various sizes and configurations. Drag chains are available in different sizes, shapes, and materials, making them versatile and adaptable to fit the specific requirements of each machine.
6. Noise Reduction: The movement of cables and hoses in CNC machines can generate noise and vibration. Drag chains equipped with noise-reducing features dampen these effects, resulting in quieter operation and a more comfortable working environment.
7. Maintenance: Drag chains require minimal maintenance, making them ideal for CNC machines and machining centers where continuous operation is essential. Regular inspections and cleaning are typically sufficient to ensure their optimal performance.
8. Safety: Proper cable management with drag chains enhances the safety of CNC machines and machining centers. Organized cables reduce the risk of tripping hazards and prevent accidental damage to sensitive components.
In conclusion, drag chains are highly beneficial in CNC machines and machining centers. They improve cable management, protect cables and hoses, reduce downtime, and contribute to the smooth and safe operation of these precision manufacturing systems. Their adaptability, durability, and low maintenance make them a reliable solution for managing cables in the demanding environment of CNC machining.


editor by CX 2023-08-07