Features:
1.The joints are made of 25CrMo forgings, which are wear-resistant and not suitable for deformation.
2.The tube body is Q345B, and the locking part is 42CrMo. With inspection holes, the guard ring protects the locking parts safely.
3.The upper connection can be customized according to the size of the model specified by the customer.
Descriptions:
1.The casings are designed to perform cased holes, especially for the construction of bored piles by rotary drilling rigs.
2.The casing joint with high machining accuracy ensures a fast replacement and bolting of the casing as well as the best for force transmission effect.
Technical Parameters:
| Double-wall Casing Tube | |||||||||||||||||||||
| Dia. | Length |
Casing-wall THK-1 |
Casing-wall THK-2 |
Total THK |
Bolt QTY |
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| D1/D2 | 1m | 2m | 3m | 4m | 5m | 6m | a1 | a2 | t2 | bolts | |||||||||||
| (mm) | Weight(kg) | (mm) | (mm) | (pcs) | |||||||||||||||||
| 620/540 | 403 | 739 | 1074 | 1411 | 1747 | 2081 | 12 | 8 | 40 | 8 | |||||||||||
| 750/670 | 492 | 902 | 1311 | 1722 | 2131 | 2540 | 12 | 8 | 40 | 10 | |||||||||||
| 880/800 | 585 | 1069 | 1552 | 2036 | 2520 | 3005 | 12 | 8 | 40 | 10 | |||||||||||
| 1000/920 | 669 | 1221 | 1773 | 2328 | 2877 | 3429 | 12 | 8 | 40 | 10 | |||||||||||
| 1180/1100 | 844 | 1580 | 2316 | 3052 | 3787 | 4522 | 16 | 8 | 40 | 12 | |||||||||||
| 1200/1120 | 872 | 1620 | 2370 | 3120 | 3870 | 4620 | 16 | 8 | 40 | 12 | |||||||||||
| 1300/1200 | 933 | 1746 | 2558 | 3372 | 4184 | 4996 | 16 | 10 | 40 | 12 | |||||||||||
| 1500/1400 | 1433 | 2628 | 3817 | 5009 | 6210 | 7393 | 20 | 10 | 50 | 12 | |||||||||||
| 1800/1700 | 1730 | 3166 | 4602 | 6038 | 7474 | 8910 | 20 | 10 | 50 | 16 | |||||||||||
| 2000/1880 | 2450 | 4280 | 6110 | 7940 | 9770 | 11600 | 20 | 15 | 60 | 12 | |||||||||||
| 2200/2080 | 2700 | 4720 | 6740 | 8760 | 10780 | 12800 | 20 | 15 | 60 | 12 | |||||||||||
| 2500/2380 | 2960 | 5240 | 7520 | 9800 | 12080 | 14360 | 20 | 15 | 60 | 16 | |||||||||||
