Good Quality Mining Rock Bolts - Coupler – Cathay Detail:
Couperls was designed to connect Threaded Steel Bars, to increase the length where
projects request.
Material: C45 and 40Cr
Product detail pictures:



Related Product Guide:
Our personnel are generally within the spirit of "continuous improvement and excellence", and using the excellent top quality goods, favorable rate and superior after-sales expert services, we try to win every customer's believe in for Good Quality Mining Rock Bolts - Coupler – Cathay, The product will supply to all over the world, such as: Mexico, Johor, Argentina, Since our establishment, we keep on improving our products and customer service. We are able to provide you with a wide range of high quality hair products at competitive prices. Also we can produce different hair products according to your samples. We insist on high quality and reasonable price. Except this, we provide best OEM service. We warmly welcome OEM orders and customers all over the world to cooperate with us for mutual development in the future.
Nominal Diameter | Diameter | H | B | L | Nominal Section | Nominal Weight | |
Dv | Dh | ||||||
mm | mm | mm | mm | mm | mm | mm2 | kg/m |
15 | 15 | 15 | 1.0 | 4.5 | 10 | 176 | 1.47 |
18 | 18 | 18 | 1.0 | 4.0 | 10 | 254.5 | 2.11 |
20 | 20 | 20 | 1.3 | 4.8 | 10 | 314 | 2.47 |
25 | 25 | 25 | 1.6 | 6.0 | 12 | 490.9 | 4.10 |
32 | 32 | 32 | 2.0 | 7.0 | 16 | 804.2 | 6.65 |
36 | 36 | 36 | 2.5 | 8.0 | 18 | 1018 | 8.41 |
40 | 40 | 40 | 3.0 | 8.0 | 20 | 1256.6 | 10.34 |
50 | 50 | 50 | 3.0 | 9.0 | 24 | 1963.5 | 16.28 |
60 | 60 | 60 | 3.0 | 10.0 | 22 | 2827 | 23.26 |
63.5 | 63 | 63.5 | 3.0 | 12.0 | 22 | 3167 | 26.20 |
65 | 65 | 65 | 3.0 | 12.0 | 22 | 3318 | 27.470 |
70 | 70 | 70 | 3.0 | 12.0 | 22 | 3848 | 31.8 |
75 | 75 | 75 | 3.0 | 12.0 | 22 | 4418 | 36.9 |
Grade500/630 | NominalDia. | CrossSection | YieldStrength | TensileStrength | YieldLoad | UltimateLoad | Elongation | NominalWeight |
mm | mm2 | >=Mpa | >=Mpa | KN | KN | A/% | KG/m | |
20 | 314 | 500 | 630 | 157 | 198 | 10 | 2.47 | |
25 | 491 | 500 | 630 | 246 | 309 | 10 | 4.1 | |
28 | 615 | 500 | 630 | 308 | 387 | 10 | 4.83 |

This company conforms to the market requirement and joins in the market competition by its high quality product, this is an enterprise that have Chinese spirit.

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