GPS-series engineering drill rig is applied to large diameter cast-in-place piling with reinforced-concrete for high building, harbor, dam, bridge, basic engineering and also can drill large diameter hole of water well and engineering.
Features
- This kind of rig is equipped a hydraulic device that can make can rotary and supporting plate to move away from the borehole.
- The mast is installed a guide way to the benefit of vertically of borehole and have a retraction system to move the kelly away from the center of rotary.
- It us equipped with a centrifugal mud pump system for pumping reverse circulation drilling to handle various conditions and formations and can be changed into direct circulation immediately to suit different needs
- To life or lower mast is operated by hydraulic control quickly and reliably
- Main and vice winches employ the mechanism of planetary-gear train, so the operation is simple and convenient.
| Specifications | Unit | GPS-25 | |
| Drilling depth | m | 80 | |
| Diameter of hole | m | 2.5 | |
| Torque | KN.M | 65 | |
| Speed | forward | r/min | 8,10,12.5,16,22,29,37,49,58,77 |
| reverse | 10,13 | ||
| Main winch capacity (single rope) | KN | 30 | |
| Vice winch capacity (single rope) | KN | 30 | |
| Mud pump | m3/h | 180 | |
| Effective height | m | 10 | |
| Drill pipe | mm | 210x210x3750 | |
| Power | kw | 55 | |
| Weight | T | 13 | |
| Dimensions(LxWxH) | m | 6.1x2.6x12 | |
Lap Joint Flanges (LJ Flanges) are used on piping fitted with lapped pipe or with lap joint stub ends the combined initial cost of the two items being approximately one-third higher than that of comparable Welding Neck Flanges.
Lap Joint Flange is having two components, a stub end, and a loose backing flange. Stub end is butt welded to the pipe and Backing flange freely move over the pipe. The backing flange can be of different material than stub material and normally of the carbon steel to save the cost. Lap flange is used where frequent dismantling is required, and space is constrained.
Furthermore, a standard lap Joint Flange will typically have a longer hub length in comparison to a Slip On Flange, but this is often considered unnecessary for many applications.
The lap joint flange is practically identical to a slip-on flange except it has a radius at the intersection of the bore and flange face.
Lap Joint Flanges
Lapped Flange,Joint Flange,Lap Joint Flange,LJ Flange
Shandong Zhongnuo Heavy Industry Co.,Ltd. , https://www.zhongnuoflange.com