The slots of this kind of screen are punched precisely in a flat sheet which then is rolled into a pipe.
The sand and gravel can't easily block the slot because of the special bridge style design, and Spiral type bridge slot screens has great mechanical strength and water entering capacity.
Meanwhile, Bridge Slot well Screen use steel punching technology and is rolled in many ways, so they are light, cheap and easily operating.
Advantages of Spiral type bridge slot screens
1)High strength through resistance to twisting, compressive, and tensile forces
2)A smooth bore that does not impede the passage of probes, tools, etc.
3)Formations with large particle sizes
4) Large diameter wells
5)Low to medium flow rates
The specification of Spiral type bridge slot screens
Diameter(mm) |
146 |
159 |
219 |
273 |
325 |
377 |
426 |
529 |
||||||||||||
ID(mm) |
130 |
140 |
138 |
200 |
198 |
254 |
250 |
246 |
305 |
300 |
297 |
357 |
350 |
346 |
406 |
400 |
398 |
502 |
500 |
498 |
Thickness(mm) |
5 |
5 |
6 |
5 |
6 |
5 |
6 |
8 |
5 |
6 |
8 |
5 |
6 |
8 |
5 |
6 |
8 |
6 |
7 |
8 |
Coupling OD(mm) |
146 |
160 |
162 |
220 |
226 |
274 |
278 |
278 |
325 |
328 |
329 |
377 |
378 |
379 |
426 |
428 |
432 |
529 |
530 |
531 |
Mechnical Property
(mm) |
159 |
219 |
273 |
325 |
377 |
426 |
529 |
||||||||||||
Wall thickness(P) |
5 |
6 |
5 |
6 |
5 |
6 |
8 |
5 |
6 |
8 |
5 |
6 |
8 |
5 |
6 |
8 |
6 |
7 |
8 |
Tension strength(K N) |
230 |
270 |
320 |
390 |
400 |
490 |
653 |
480 |
570 |
760 |
560 |
670 |
893 |
630 |
760 |
1048 |
782 |
944 |
1296 |
Anti Extrusion(N/cm) |
520 |
690 |
340 |
450 |
170 |
230 |
306 |
136 |
203 |
270 |
128 |
183 |
244 |
92 |
135 |
203 |
90 |
136 |
186 |
Spiral type bridge slot screens design is reasonable, appearance, reliable quality, suitable for hydrology, geology, engineering geology, chemical engineering geology,
geothermal air conditioning, foundation precipitation, water source development, farmland and the urban water supply various industries such as construction .