800mm Segmental Casing Pile with Bauer-Screw Joint Used on Bauer-Bg20 Rotary Dri
详细信息
800mm segmental casing pile with bauer-screw joint used on bauer-bg20 rotary drill rig for secant pile foundation workThe joints are made of 25CrMo forgings, which are wear-resistant and not suitable for deformation. The pipe body is Q345B, bolt 42CrMo material, high strength, high torque resistance. The joint bolts are double-row holes. Longer and thicker joints, suitable for high torque drilling
double walled Casing are used to stabilize the borehole wall and to maintain the verticality or to maintain the required angle in the case of inclined drilling, casings are double walled and are offered in various diameter and length ,when use casing oscillators or casing rotators , cased boreholes of more than 80m can be installed
Casings are available in lengths of 1m,2m, 3m, 4m,5m, 6m
Other diameters available on request
Cutting shoe with exchangeable blocks
exchangeable blocks have the advantage that they can be quickly replaced during operation without altering the cutting geometry of the cutting shoe , the overcut can be altered depending on the various types of teeth
Available in the following length 0.5m.1m.2m
Cutting shoe with weld-on blocks
Casing drivers
The casing driver is attached to the cardan joint on the rotary drive and is the connecting element to the casing , if the casing drive and the casing are bolted , the casings can be rotated or extracted
Available range of diameters 620 to 2,500 mm
Featurs
Tianjin Huachang Xingye Technology Co., Ltd. (often operating under the brand TJ Drilling) is a major Chinese manufacturer specializing in foundation drilling tools. Their double-wall segmental casing is widely used in global markets and is compatible with major rig brands such as Bauer-, Soilmec, Casagrande, San-y, and XC-MG.
Below are the detailed technical specifications and features for their double-wall casing systems.
1. Technical Design & Materials
TJ Drilling focuses on high-torque resistance and wear durability for deep foundation work in difficult soils.
Joint Material: Precision-forged 25CrMo or 42CrMo alloy steel. These are heat-treated to prevent deformation under the extreme clamping forces of oscillators.
Pipe Body: Constructed from high-strength structural steel, typically Q345B (equivalent to S355).
Internal Structure: The inner and outer shells are connected by high-density longitudinal ribs. For OD 620-1300mm, the inner tube thickness is typically 12mm; for OD 1500-1800mm, it increases to 16mm.
Connection: Conical screw joints with double-row bolt holes to ensure a watertight seal and maximum torque transfer.
2. Standard Specification Range
Their double-wall casings are categorized by the OD/ID (Outer Diameter / Inner Diameter) ratio and are available in lengths of 1m, 2m, 3m, 4m, 5m, and 6m.
| Outer / Inner (mm) | Wall Thickness (mm) | Joint Type | Compatibility Example |
| 880 / 800 | 40 | Bauer-type Screw | Soilmec-SR-40, XC-MG XR280 |
| 1000 / 920 | 40 | Bauer-type Screw | San-y SR285, Bauer-BG28 |
| 1180 / 1100 | 40 | Bauer-type Screw | Liebherr-LRB355 |
| 1200 / 1120 | 40 | Bauer-type Screw | Liebherr-<, /SPAN>LB28 / LB36 |
| 1500 / 1400 | 50 | Bauer-type Screw | Bauer-BG30, Liebherr-LB45 |
| 1800 / 1700 | 50 | Bauer-type Screw | Large Casing Oscillators |
Segmental Casings are used as a temporary support structure for a bored piling system. It's used when deeper, unstable soil conditions are present. Segmental Casing is utilised during the drilling stage of construction and can be installed and extracted by using a drilling rig or an oscillator attached to an excavator rig. The casing is jiggled in by big vibrations as it penetrates the ground. The soil contained within is removed by means of boring tools such as an auger or drilling buckets. Casing sections are joined using mechanical joints until the desired length is achieved.
During the concreting stage casings are withdrawn in joint segments. A piling rig and or oscillator can be used to extract Segmental Casings.
The Segmental Casing method can be applied to foundation piles, secant pile, and contiguous retaining walls.
tianjin huachang xingye technology co ltd Segmental Casings are made with either single or double wall thickness with rebar reinforcement for Maximum Torque.
