The screen made with carbon steel sheeting (S 235J) and stainless steel (AISI 304/316/L) are used for well with a high flow rate, e.g. for lowering groundwater and for geothermal wells. The narrower slotted flow-through filters are recommended for use with coatings made of geotextile (TNT) or stainless steel mesh.

Our slot are 4x 40 mm

  • raw material : S235.JR o Stainless AISI 304L AISI 316, or Galvanized
  • LENGHT: 5 or 6 mt
  • Connection welding, flanged, thread, Gi.RA.MO., GI.SA.MO, Stc

 

Foto Oblunco -  © F.lli Molè

Oblunge –  © F.lli Molè

FILTRI OBLUNCHI – OBLOG HOLES SCREEN – CREPINE OBLUNCHE  
DIAMETRO DIAMETER SPESS. THICKNESS cava 4×40 cava 5×40
dn INCH. Mm. Mm. open area % litri/s/m open area % litri/s/m
100 4″ 114 3,4,5 13,409% 2,30 16,762% 2,88
125 5″ 139,7 3,4,5 13,131% 2,26 16,414% 2,82
150 6″ 5/8 168 3,4,5 12,739% 2,19 15,924% 2,74
7″ 177,8 3,4,5 12,037% 2,07 15,046% 2,59
210 3,4,5 11,647% 2,00 14,559% 2,50
200 8″ 5/8 219 3,4,5,6 12,564% 2,16 15,705% 2,70
250 9″ 5/8 244 3,4,5,6 11,277% 1,94 14,096% 2,42
9″ 7/8 250 3,4,5,6 11,006% 1,89 13,758% 2,36
250 10″ 1/2 273 3,4,5,6 11,199% 1,92 13,999% 2,41
11″ 13/16 300 4,5,6 11,210% 1,93 14,013% 2,41
300 12″ 3/4 323 4,5,6,7 11,358% 1,95 14,198% 2,44
350 14″ 355 4,5,6,7 12,057% 2,07 15,071% 2,59
CAVE   OPEN               AEREA SPESS           THICKNESS
A B % Mm
4 40 14 3,4
5 40 21 5,6,7

Formula (l/s/m) =\frac{4,8*area*diameter*\pi}{100}