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
DIAMETER
(mm)

SLOTS WIDTH - mm

3X40
(WT from 3 to 4 mm)

4X40
(WT from 3 to 5 mm)

5X40
(WT from 3 to 6 mm)

6X35
(WT from 3 to 7 mm)

Open
area

Litre/
sec/mt

Open
area

Litre/
sec/mt

Open area

Litre/
sec/mt

Open
area

Litre/
sec/mt

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