Double Wall Casing designed for demanding bored piling applications. Manufactured from high-strength steel with precision welding and machining, our double wall casing provides exceptional rigidity, torque transmission, and resistance to deformation during installation and extraction.
Compared with single wall casing, the dual-tube structure offers greater structural stability, making it ideal for deep foundation drilling, unstable ground conditions, and projects requiring casing rotators or oscillators.
Our double wall casings are widely used in bridge foundations, high-rise buildings, metro construction, ports, marine engineering, and other large-scale infrastructure projects.
Applications
Rockway Double Wall Casing is suitable for a wide range of foundation construction projects, including:
- Bored pile foundations
- Secant pile walls
- Contiguous pile walls
- Bridge foundation construction
- High-rise building foundations
- Metro and railway projects
- Marine and port engineering
- Deep shaft construction
Advantages of Double Wall Casing
Higher Structural Strength
The inner and outer tube design significantly increases the casing’s moment of inertia, providing greater resistance to bending and deformation during deep drilling operations.
Excellent Torque Transmission
The reinforced structure efficiently transfers rotational force from casing rotators and oscillators, ensuring smooth installation even in difficult ground conditions.
Better Stability
The increased rigidity helps maintain borehole alignment and minimizes casing distortion in soft, loose, or water-bearing soils.
Longer Service Life
Manufactured with premium steel and strict quality control, Rockway double wall casings deliver excellent wear resistance and durability under continuous heavy-duty use.
Compatible Equipment
Our double wall casing is compatible with most leading foundation drilling equipment, including:
- Bauer
- SANY
- XCMG
- Soilmec
- Casagrande
- MAIT
- Liebherr
- Zoomlion
Optional Components
Rockway also supplies a complete range of casing accessories:
- Casing Joint
- Casing Shoe
- Casing Adapter
- Casing Driver
- Casing Teeth
- Wear Ring
- Casing Lifting Plate
All accessories are manufactured to ensure accurate fit and reliable performance.
Technical Parameters of Double Wall Casing
| Diameter | Effective length l | Wall thickness | Total w all thickness | Bolt Number | ||||
| D1/D2 | 2m | 3m | 4m | 6m | a1 | a2 | t2 | Bolts |
| [mm] | Weight [kg] Parts Number | [mm] | [mm] | [mm] | [Nos] | |||
| 620/540 | 739 | 1074 | 1411 | 1747 | 2081 | 12 | 8 | 40 |
| 750/670 | 902 | 1311 | 1722 | 2131 | 2540 | 12 | 8 | 40 |
| 880/800 | 1069 | 1552 | 2036 | 2520 | 3005 | 12 | 8 | 40 |
| 1000/920 | 1221 | 1773 | 2328 | 2877 | 3429 | 12 | 8 | 40 |
| 1180/1100 | 1580 | 2316 | 3052 | 3787 | 4522 | 16 | 8 | 40 |
| 1200/1120 | 1620 | 2370 | 3120 | 3870 | 4620 | 16 | 8 | 40 |
| 1300/1220 | 1746 | 2558 | 3372 | 4184 | 4996 | 16 | 8 | 40 |
| 1500/1400 | 2628 | 3817 | 5009 | 6210 | 7393 | 20 | 10 | 50 |
| 1800/1700 | 3166 | 4602 | 6038 | 7474 | 8910 | 20 | 10 | 50 |
| 2000/1880 | 4280 | 6110 | 7940 | 9770 | 11600 | 20 | 15 | 60 |
| 2200/2080 | 4720 | 6740 | 8760 | 10780 | 12800 | 20 | 15 | 60 |
| 2500/2380 | 5240 | 7520 | 9800 | 12080 | 14360 | 20 | 15 | 60 |
Casing System Pictures
Cases for Casing
Factory Pictures
Shipping& Delivery
Jobsite
Why Choose Rockway?
Rockway specializes in foundation drilling equipment and piling accessories for customers across the Middle East and international markets.
Our advantages include:
- Professional manufacturing experience
- Strict quality inspection
- High-strength raw materials
- Precision CNC machining
- OEM & customized production
- Fast delivery worldwide
- Technical support before and after sales
Whether you require standard or customized double wall casing, our engineering team can provide a solution tailored to your project requirement