Slot opening for stainless steel water well screens are
manufactured by spacing successive turns of the outer wire to
produce the desired slot size. All slots should be cleaned and free
of burrs and cuttings.
Each slot opening between adjacent wires is V-shaped, from the
special shape of wire used to form the screen surface. The V-shaped
openings designed to be non clogging, are narrowest at the outer
face and widen inwardly. Johnson screens allow:
1. Production process continuity: V-shaped profile wires creating
slots which enlarge inwardly and therefore avoid clogging and
2. Low maintenance costs: Separation at the screen surface which
can easily cleaned by scraping or back washing.
3. Maximum process output: Precise and continuous slot openings
resulting in accurate separation without loss off media.
4. Low operational costs: Large open area with an effective flow,
high yield and a low pressure drop .
5. Long life: Welded at each intersection creating a strong and
6. Reduced installation costs: supporting constructions eliminating
costly support media and enabling a maximum flexibility in the
design of components.
7. Chemical and thermal resistant: A variety of corrosion resistant
stainless steel materials and many exotic alloys suitable for high
temperatures and pressures.
Each slot opening between adjacent wires is V-shaped, resulting
from the special shape of the wire used to form the screen surface.
The V-shaped opening, designed to be non clogging, are narrowest at
the outer face and widen inwardly.
Johnson thread stainless steel water well screens provide more
intake area per unit area of screen surface than any other type.
For any given slot size, this kind of water well screen has maximum
Specifications of Stainless Steel Johnson Casing Pipe Water Well
Packing details for Stainless Steel Johnson Casing Pipe Water Well
Single with bubble bag and then in wooden case(fumigation
certificate). Each case is clearly
Name & identification mark of manufacturer-HuaDong Brand
Date of manufacture
Safe heating & application temperature
Images of Johnson Screen
Specification of Johnson Screen
|Wedge 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|
|Support Rod||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 6.0mm|
|Note: other specifications available as per request|
|Slot Size||0.10, 0.15, 0.20, 0.25, 0.30…… 6.00mm also achieved upon request.|
|Material||galvanized low carton (LCG), stainless steel (304,316 etc.)|
|Length||up to 6 meters.|
|Diameter||from 25mm to 1200mm.|
|End Connection||Plain beveled ends, flanged or threaded couplings|
Application of Johnson Screens
water wells, mining & Mineral Processing, municipal water
supply, refining & petrochemical, water treatment, architecture
and construction, etc.
Inspection and Test details:
All dimensions of wedge wire screens will be checked by our quality
inspector, and they also can be inspected by Third Party
Inspections or representative appointed by buyer.
Wall thickness of coupling material is inspected by Ultrasonic
inspection method, and they also be made the Ultrasonic flaw
Do Destructive Collapse Test and collapse Strength Test before shipment.
If required, the screens will be made pickling and passivation.
The whole manufacturing process can be monitored by Third Party
Inspection Company and representative appointed by buyer.
The wedge wire screens will be arranged the Pre-shipment Inspection
1. Delivery port: We can arrange to deliver the wedge wire screens to any China port
2. Delivered punctually, no delay.
3. Delivery modes: by sea, air, railway and express.