The product description
High quality mining chain with cheap price:
Size: 6mm-42mm
Material: Alloy steel, high tensile, heat treated.
Surface treatment: Galvanized, Black painted, Self color, Polishing, Powder coated
Color: Self color, Red , grey, green, as to your request
Application: Shiap, iron and steel industry, petroleum chemical industry, coal mine


Product specification
diameter | pitch | width | unit weight (kg/m) |
nominal d (mm) | tolerance (mm) | p (mm) | tolerance (mm) | inner W1 min. (mm) | outer W2 max. (mm) |
6 | ± 0.24 | 18 | ± 0.5 | 7.8 | 22.2 | 0.8 |
7 | ± 0.28 | 21 | ± 0.6 | 9.1 | 25.9 | 1.1 |
8 | ± 0.32 | 24 | ± 0.7 | 10.4 | 29.6 | 1.4 |
10 | ± 0.4 | 30 | ± 0.9 | 13 | 37 | 2.2 |
13 | ± 0.52 | 39 | ± 1.2 | 16.9 | 48.1 | 4.1 |
16 | ± 0.64 | 48 | ± 1.4 | 20.8 | 59.2 | 6.2 |
18 | ± 0.9 | 54 | ± 1.6 | 23.4 | 66.6 | 8 |
19 | ± 1 | 57 | ± 1.7 | 24.7 | 70.3 | 9 |
20 | ± 1 | 60 | ± 1.8 | 26 | 74 | 9.9 |
22 | ± 1.1 | 66 | ± 2.0 | 28.6 | 81.4 | 12 |
23 | ± 1.2 | 69 | ± 2.1 | 29.9 | 85.1 | 13.1 |
24 | ± 1.2 | 72 | ± 2.1 | 30 | 84 | 14.5 |
25 | ± 1.3 | 75 | ± 2.2 | 32.5 | 92.5 | 15.6 |
26 | ± 1.3 | 78 | ± 2.3 | 33.8 | 96.2 | 16.8 |
28 | ± 1.4 | 84 | ± 2.5 | 36.4 | 104 | 19.5 |
30 | ± 1.5 | 90 | ± 2.7 | 37.5 | 105 | 22.1 |
32 | ± 1.6 | 96 | ± 2.9 | 41.6 | 118 | 25.4 |
36 | ± 1.8 | 108 | ± 3.2 | 46.8 | 133 | 32.1 |
38 | ± 1.9 | 114 | ± 3.4 | 49.4 | 140.6 | 35.8 |
40 | ± 2 | 120 | ± 4.0 | 52 | 148 | 39.7 |
45 | ± 2.3 | 135 | ± 4.0 | 58.5 | 167 | 52.2 |
48 | ± 2.4 | 144 | ± 4.3 | 62.4 | 177.6 | 57.2 |
50 | ± 2.6 | 150 | ± 4.5 | 65 | 185 | 62 |
The technological requirementsIn the manufacturing process, only the use of high-quality alloy steel, and strict control of the process, the chain up to G80. Our G80 chain achieves a factor of 4 safety. The surface of the chain can be polished, blackened, hot-dip galvanizing, painting, hanging plastic, electroplating, dachro and other processing. We can also print "G80" or other marks according to your request.

Company profileFounded in 1998, Weifang First Rigging Co., Ltd., formerly known as Changle Chain Factory, is located in Changle Country of Shandong Province known as "The Gem City of China", and specializes in producing and marketing chain and rigging related products at home and abroad.
Our company has independent import and export operating rights, and can handle the certifications of CCS, LR, DNV and other famous classification societies for products. Our products are sold to dozens of countries such as Europe, America and Middle East as well as more than ten provincial and municipal regions in China, and. are widely applied to the fields of ships, steel, petrochemical industry, coal mine, etc.
In the principle of "Quality-honoring & Promise-keeping", our company meets the requirements of all the customers through service innovation, changes the original production state through technical innovation, improves the product quality through process innovation, and continuously goes to standardization, elaboration, process and scientification through the business thought of constant innovation. Absolute sincerity will move a heart of stone. Our company is willing to cooperate with domestic and foreign new/old customers in utmost sincerity, to create a common future!Factory production picture
Packaging and delivery:
Packing details: in bulk, in wooden cases, in iron drums, and then in pallets or according to your requirements
Delivery details: usually within 15-20 working days after receipt of your irrevocable L/C or advance payment.


Our services
We can make the products according to customer's requirement.
2. We have more than 50 professional technical team to provide the best after-sales service.
3. Fast delivery time.
4. We have CE, TUV and SGS certifications.
We are a professional crane manufacturer with more than 20 years of experience since 1998.
We also have many different products.
