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Oil&Water Sand Filter Pipe for bore well/Wedge Wire Screen


Huadong Screen Co., LTD has emerged as the leading water well screen manufacturer in China. We offer a wide variety well screens, such as water well screen, bridge slot screen, Johnson well screen, wedge wire well screen, etc. We have been in line of water well screen for nearly 20 years. Our well screens have earned them a good reputation at home and abroad, such as Russia, Canada, Germany, Morocco, Iraq, etc.

Johnson Wedge Wire Screens consist of V-shape profile wire and the longitudinal support rods. Each intersecting point of these wires is fusion welded, so Water Well Screens has sturdy constriction and good mechanical property. The V-shape section plane can avoid blockage and make sure of the unimpeded water. The consecutive slot have more open area, and it can reduce the speed of the water entering to avoid the sand entering the Water Well Screens under the great pressure, so it can filter sand better. Meanwhile, the slot of Water Well Screens can change according to the real condition of the earth.


Advantages :
1. A continuous slot opening which significantly increases the available open area, thus providing greater access to the water bearing zone
2. A V-shaped profile wire which avoids clogging and ensures an uninterrupted flow.
3. A uniform and efficient well development due to the continuous slot opening.
4. Ladder-like wire welded screens have a strong structure and high open area, as well as accurate slot dimension.
5. Ladder-like wire welded screens have the features of easy backwashing, last long, safety and reliability as well as low comprehensive cost.
Technical Parameters :
SIZE (inch) | O.D (mm) | SLOT (inch) | LENGTH (m) | Collapse Strength (psi) | Tensile Weight (ton) | Wire size (mm) | RODS (mm) |
4 | 117 | 0.040 | 3 | 395 | 6 | 2.2*3.0 | 3.8mm/22 |
4 | 114.3 | 0.040 | 3 | 395 | 6 | 2.3*3.0 | 3.8mm/22 |
6 | 168.3 | 0.040 | 3 | 252 | 8 | 2.3*3.5 | 3.8mm/32 |
8 | 219.1 | 0.010 | 3 | 399 | 10.5 | 3.0*5.0 | 3.8mm/48 |
8 | 219.1 | 0.020 | 3 | 370 | 10.5 | 3.0*5.0 | 3.8mm/48 |
8 | 219.1 | 0.040 | 3 | 323 | 10.5 | 3.0*5.0 | 3.8mm/48 |
10 | 273.1 | 0.010 | 3 | 206 | 11 | 3.0*5.0 | 3.8mm/50 |
10 | 273.1 | 0.020 | 3 | 191 | 11 | 3.0*5.0 | 3.8mm/50 |
10 | 273.1 | 0.040 | 3 | 167 | 11 | 3.0*5.0 | 3.8mm/50 |
Johnson screen show :




Packing details :
Single with bubble bag and then in wooden case(fumigation certificate). Each case is clearly marked with:
1.Name & identification mark of manufacturer-HuaDong Brand
2. Batch number
3. Date of manufacturer
4. Material
5. Safe heating & application temperature


Maximazing flow rates :
When considering screens of equal length, diameter and slot size, flow rates through V-shaped well screens can be;Three times higher than bridge-slot screens;Nine times higher than slotted casing
Non clogging slot :
Continuous-slot well screens have V-shaped openings that narrowest at the outer face and widen inwardly, thus, oversized particles are retained
outside the screen and particles passing through the narrow outside opening can enter the screen.
Reduction in operating cost :
By using a Continous-slot well screen, savings can be achieved in pumping costs. Lower through-slot velocities mean that pressure drops are
minimized, therefore :
Drawdowns are reduced, Less energy is needed for pumping, Flow rates are increased, Less sand in the water reduces wear on the pumps.


Thank you very much for noticing my information. Warmly welcome all clients from all over the world.
Looking forward to win-to-win and long term cooperation.
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