OBLONG SLOTTED SCREENS
Oblong slotted screens are made with carbon steel or stainless steel plates, punched, rolled and longitudinally welded. Slots are oblong shaped and are parallel to the generatricies of the pipe. This type of screen is usually used for groundwater abstraction in consolidated or coarse soils. Upon request they can be covered with stainless steel net (covering all the screen or only part of it) which meshes are 0,10 mm to 0,40 mm distant. Stainless steel covered screens are suitable for fine and sandy soils and preserve a high flow rate.
OUR RANGE
Diameters: from 114,3 to 1016 mm
Wall thicknesses: from 3 to 10 mm
Lengths: 6 mt standard, 3 mt or other lengths upon request
Connections: welding ends with or without collars, M/F threaded couplings, flanged
Finishing: Carbon steel screens can be supplied without coating, coated with waterborne base paint or hot galvanized
OBLONG SLOTTED SCREENS THEORETICAL YIELD
OUTSIDE |
SLOTS WIDTH - mm |
|||||||
3X40 |
4X40 |
5X40 |
6X35 |
|||||
Open |
Litre/ |
Open |
Litre/ |
Open area |
Litre/ |
Open |
Litre/ |
|
114,3 |
14,0 % |
1,4 |
17,0 % |
1,8 |
21,0 % |
2,2 |
23,0 % |
2,4 |
139,7 |
14,0 % |
1,8 |
17,0 % |
2,2 |
21,0 % |
2,6 |
23,0 % |
2,9 |
168,3 |
14,0 % |
2,2 |
17,0 % |
2,6 |
21,0 % |
3,3 |
23,0 % |
3,6 |
177,8 |
14,0 % |
2,3 |
17,0 % |
2,8 |
21,0 % |
3,4 |
23,0 % |
3,8 |
193,7 |
14,0 % |
2,5 |
17,0 % |
3,0 |
21,0 % |
3,8 |
23,0 % |
4,1 |
219,1 |
14,0 % |
2,8 |
17,0 % |
3,5 |
21,0 % |
4,3 |
23,0 % |
4,7 |
244,5 |
14,0 % |
3,2 |
17,0 % |
3,9 |
21,0 % |
4,8 |
23,0 % |
5,2 |
273,0 |
14,0 % |
3,6 |
17,0 % |
4,3 |
21,0 % |
5,3 |
23,0 % |
5,8 |
323,9 |
14,0 % |
4,2 |
17,0 % |
5,1 |
21,0 % |
6,3 |
23,0 % |
6,9 |
355,6 |
14,0 % |
4,6 |
17,0 % |
5,6 |
21,0 % |
6,9 |
23,0 % |
7,6 |
406,4 |
14,0 % |
5,3 |
17,0 % |
6,5 |
21,0 % |
8,0 |
23,0 % |
8,7 |
457,2 |
14,0 % |
6,0 |
17,0 % |
7,3 |
21,0 % |
8,9 |
23,0 % |
9,8 |
508,0 |
14,0 % |
6,6 |
17,0 % |
8,0 |
21,0 % |
10,0 |
23,0 % |
10,9 |
609,6 |
14,0 % |
7,9 |
17,0 % |
9,7 |
21,0 % |
12,0 |
23,0 % |
13,1 |
711,8 |
14,0 % |
9,3 |
17,0 % |
11,3 |
21,0 % |
14,0 |
23,0 % |
15,3 |
812,8 |
14,0 % |
10,7 |
17,0 % |
13,0 |
21,0 % |
16,0 |
23,0 % |
17,5 |
914,4 |
14,0 % |
12,0 |
17,0 % |
14,6 |
21,0 % |
18,0 |
23,0 % |
19,7 |
1016 |
14,0 % |
13,3 |
17,0 % |
16,2 |
21,0 % |
20,0 |
23,0 % |
21,9 |
