Now most of the Johnson screens use ladder wire

1, continuous gap greatly increased the water area, so contact with the aquifer better.
2, V-shaped structure to avoid blocking, to ensure smooth flow.
3, continuous pores can be used effectively long-term.
4, trapezoidal water pipe structure is strong, high porosity, gap size is accurate.
5, trapezoidal silk filter pipe easy backwashing, long life, safe and reliable, low overall cost
advantage
1, the higher the porosity of the water pipe is more suitable for the construction of high efficiency water, oil, gas wells.
2, the operating costs of low porosity of the water pipe is more conducive to the infiltration of groundwater, plenty of water to reduce the water level to reduce, thereby reducing energy consumption.
3, to reduce the wear of the pump Under the same conditions, the higher the porosity of groundwater in the infiltration of the water pipe when the speed of penetration of other filters than the speed of the slow, so to avoid the sand under a large water pressure Into the water pipe, reducing the pump wear.
4, to extend the life of wells In contrast, the groundwater into the pore filter water filter more easily, low water flow, to extend the life of wells.