Johnson screen,water well screen are manufactured by wrapping a shaped wire around an internal array of longitudinal rods.
The wire and rod, generally made from carbon or stainless steel are joined by resistance welding.
Screen sections are usually twenty feet long. The ‘V’ or wedge shaped profile wire wraps around the support rods
over the full length of the screen creating a continuous and consistent slot opening.
Most continuous wire wrap screens are manufactured from stainless steel in order to avoid problems associated with sand pumping
that may result from accelerated corrosion of carbon steel screens.
specifications of Johnson screen,water well screen
|water Well Screen|
|Specification (Profile wire):||Width(mm): 1.50 1.80 2.30 3.00 3.30 3.70|
Height(mm): 2.20 2.50 2.70 3.60 4.30 4.70 5.60 6.30 7.00
|Specification (support rods):||Width(mm): 2.30 3.00 3.30 3.70|
Height(mm): 2.70 3.60 4.70 5.60 6.30
Round: From 2.50mm to 6.5mm
|Note: other wires and rods available upon request|
|Slot size||0.10, 0.15, 0.20, 0.25, 0.30…… 6.00mm also achieved upon request.|
|Material:||Low carton, low carton galvanized steel (LCG), stainless steel (304,316 etc.)|
|Length||2.9 meters,3 meters,5.8 meters,6 meters.|
|Diameter||1 1/2″,2″,2 1/2″,3″,3 1/2″,4″,6″,7″,8″,9 5/8″,10″,12″,133/8″,14″,16″|
|Screen end||Plain beveled ends for butt welding or threaded|
|Other sizes available on request .Deep well construction specifications available on question.|
Well depths :100 m, 200 m, 350 m & 600 m.
|Reduce energy consumption and increase water flow.|
Reduce erosion of entry surfaces and increase well life.
Allow a uniform and efficient well development.
Reduce significantly potential pump damage and subsequent maintenance costs.
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