
Product name: G30 Proof Coil Link Chain
Standards: May comply with international standards such as ASTM 80 (specific standards may vary by manufacturer and product)
Material: Usually made of high-quality materials such as mild steel, with sufficient strength and toughness.
Surface treatment: Anti-corrosion treatment such as electro-galvanized (Electric Galvanised) to improve the corrosion resistance and service life of the chain.
2. Product specifications and performance
Specifications: The size and specification of the chain are varied, such as the chain diameter may cover the range from 1/8 inch (about 3.18mm) to several inches, and the specific specifications need to be selected according to the actual needs.
Strength: G30 chain has specific tensile strength and load capacity, which can meet the needs of different application scenarios.
Safety factor: It usually has a high safety factor, such as 4:1, to ensure safety and reliability during use.
Corrosion resistance: After electro-galvanizing and other surface treatments, the chain has excellent corrosion resistance and can be used for a long time in harsh environments such as humidity and corrosion.
High strength: Made of high-quality materials, it has high tensile strength and bearing capacity, and is suitable for various heavy-duty occasions.
Easy to install: The chain has a compact structure and easy installation, and can be widely used in various mechanical equipment and transmission systems.
4. the field of application
The G30 Proof Coil Link Chain is widely used in various occasions that require transmission and load-bearing, such as:
Conveyor system: As the transmission chain of the conveyor, it transmits power and carries materials.
Lifting equipment: as a lifting chain or traction chain of the crane, to realize the lifting and movement of heavy objects.
Mining machinery: In coal mines, metal mines and other industries, it is used for the traction of mining trucks and the transportation of materials.
In other industrial fields, such as fishery, agriculture, construction and other industries, the G30 Proof Coil Link Chain is also commonly found in machinery and equipment








LINK SPECIFICATION | TEST LOAD | BREAKING LOAD | NET WT PER 200FT(KG) | ||||
D | L | W | B.F. | HD.G | |||
IN | MM | MM | MM | KG | KG | M | M |
1/8 | 3.20 | 20 | 12 | 200 | 400 | 10.80 | 11.00 |
5/32 | 4.00 | 23 | 15 | 300 | 600 | 17.40 | 18.00 |
3/16 | 4.70 | 25 | 18 | 400 | 800 | 24.40 | 25.00 |
7/32 | 5.50 | 26 | 19 | 550 | 1100 | 34.00 | 35.00 |
1/4 | 6.35 | 26 | 23 | 750 | 1500 | 48.00 | 50.00 |
5/16 | 7.94 | 32 | 29 | 1200 | 2400 | 76.00 | 78.00 |
3/8 | 9.50 | 35 | 35 | 1700 | 3400 | 111.00 | 114.00 |
7/16 | 11.11 | 38 | 38 | 2300 | 4600 | 154.00 | 158.00 |
1/2 | 12.70 | 50 | 45.5 | 3000 | 6000 | 194.00 | 200.00 |
5/8 | 15.80 | 60 | 56.7 | 4700 | 9400 | 303.00 | 312.00 |
3/4 | 19.00 | 76 | 69 | 6800 | 13600 | 432.00 | 445.00 |
1 | 22.20 | 90 | 80 | 9250 | 18500 | 586.00 | 603.00 |
1 | 25.40 | 105 | 95 | 12150 | 24300 | 770.00 | 792.00 |









Qingdao Xinquanxi Metal Products Co..Ltd. was established in 2001 (formerly known as Qingdao Quanxi Hardware Cable Co., LTD.), located in Jimo District, Qingdao city, the company was mainly engaged in the production and sales of Japanese open-body turnbuckle, die forging shackles, products are mainly sold to the United States, Russia, Japan and other countries.
In September 2019, with the continuous development of the company's business, it merged with Qingdao Ruihongjie Industry and Trade Co., LTD., and changed the company name to Qingdao Xinquanxi Metal Products Co., LTD. At the same time, the business range is gradually expanding, the main production and operation of hardware rigging, wire rope connecting parts, hardware machinery, Marine and automobile connecting parts, all kinds of forging, sheet metal, stamping, casting parts and other products. After more than 20 years of development, we have established a complete system, with strong technical capacity, mature production methods, advanced production equipment and testing methods.
We always adhere to the principle of quality first, safe production, timely delivery, customer satisfaction after sale service, and constantly research and learn product expertise, with the best quality products to serve customers.
We have our own foundry and forging factory. The forging plant has 4 production lines and a history of more than 20 years;Foundry has a history of more than 30 years.
2.How do you control your quality?
1: Control during r&d at the beginning of production
2:Production process control
3:Dimensional control
4:Tensile tests
5:Quality inspection before delivery
3.Can we have our product markings on it?
Yes, we can add product markings according to your requirements.
4.How about packing?
Woven bag, carton, plywood pallet or by customer requirements.