NACM 2010 Grade 30 Proof Coil Chain

DIAGRAMS of PROOF COIL CHAIN

Proof Coil Chain Specs

NOMINAL SIZE		MATERIAL DIAMETER		WORKING LOAD LIMIT		PROOF TEST(MIN)		BREAKING FORCE MIN		INSIDE LENGTH		INSIDE WIDTH
MM	IN	MM	IN	KG	LBS	KN	LBS	KN	LBS	MM	IN	MM	IN
4.0	1/8	4.0	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	0.30
7.0	1/4	7.0	0.276	580	1300	11.6	2600	23.2	5200	31.5	1.24	9.8	0.38
8.0	5/16	8.4	0.331	860	1900	16.9	3800	33.8	7600	32.8	1.29	11.2	0.44
10.0	3/8	10.0	0.394	1200	2650	23.5	5300	47.2	10600	35.0	1.38	14.0	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
13.0	1/2	13.0	0.512	2030	4500	40.0	9000	80.0	18000	45.5	1.79	18.2	0.72
16.0	5/8	16.0	0.630	3130	6900	61.3	13800	122.8	27600	56.0	2.20	20.0	0.79
20.0	3/4	20.0	0.787	4800	10600	94.3	21200	188.6	42400	70.0	2.78	25.0	0.98
22.0	7/8	22.0	0.866	5810	12800	114.1	25600	228.2	51200	77.0	3.03	27.5	1.08
25.0	1	26.0	1.020	8140	17900	159.1	35800	318.2	71600	90.9	3.58	31.7	1.25

DESIGN of GRADE 30 PROOF COIL CHAIN

GRADE

FINISH

STANDARDS

ORIGIN

APPLICATION

MATERIAL

Our Advantages

Flexible Payment

Choose from a range of payment options to suit you such as a 30-day credit account.

Fast Delivery

Enjoy fast delivery with quick processing and timely arrivals for all your orders.

Best Rated

We Are the Highest Rated Lifting Chains Manufacturer in China With 20 Years of Experience & Knowledge

Price Match Guarantee

We are committed to offering the best prices and ensuring you never pay more than necessary.

FAQ

What is Proof Coil Chain?

Proof coil chain is a general-purpose steel chain designed for tasks like securing cargo, towing, or fencing. It’s durable and cost-effective, providing reliable performance without breaking under medium-duty pressure.

Proof Coil vs High Test Chain: What’s the Difference?

When deciding between proof coil and high test chains, it’s important to understand their differences. Here’s a breakdown of each chain’s features to help you choose the right one for your needs:

Proof Coil Chain
- Designed for light-duty tasks like securing cargo, fencing, and general-purpose use.
- Affordable and reliable for everyday applications.
- Lower tensile strength compared to high test chain, making it ideal for lighter jobs that don’t require heavy lifting.
High Test Chain
- Built for heavy-duty applications, such as construction, towing, and lifting.
- Higher tensile strength, meaning it can withstand more pressure and heavier loads.
- Better for construction and industrial jobs, where strength and durability are crucial.

What is the Strength of Proof Coil Chain?

The strength of proof coil chains varies by size but typically boasts a minimum breaking strength of around 30,000 psi. Smaller chains can handle lighter loads, while larger ones are better for securing heavier items, making them versatile for different uses.

What Are Proof Coil Chains Used For?

Proof coil chains are mainly used for light-duty applications. You can use them for securing cargo during transport, fencing, or light lifting tasks. They’re great for situations where high tensile strength isn’t critical, making them an affordable solution.

What is the Breaking Strength of Proof Coil Chain?

Breaking strength refers to the point at which the chain will snap under pressure. For proof coil chains, breaking strength varies by the gauge of the chain. A typical 5/16-inch proof coil chain has a breaking strength of around 5,400 pounds, while a 3/8-inch proof coil chain may break at 6,600 pounds. Always select a chain with a higher breaking strength than the weight you plan to lift or secure, to prevent accidents or failure.

How Long Does Proof Coil Chain Last?

The lifespan of proof coil chains depends on usage and maintenance. Regular use in outdoor environments can expose the chain to rust and corrosion, which shortens its lifespan. If properly maintained—by cleaning after use and applying lubricants to prevent rust—proof coil chains can last for many years. They should be inspected regularly for signs of wear and tear, and any damaged links should be replaced promptly.

Can Proof Coil Chains Be Used for Lifting?

Proof coil chains are not designed for lifting heavy loads. While they can lift light loads, for heavy-duty lifting, you should use higher-grade chains like Grade 70 or Grade 80. These chains are specifically engineered for strength and durability under load. Proof coil chains can be used for light lifting tasks but always stay within the working load limit (WLL). For lifting critical loads, always opt for a chain with higher tensile strength.