| Customization: | Available |
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| After-sales Service: | 1years |
| Warranty: | 1years |
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The production of these Johnson screens type is by now consolidated, it was preceded by "Anti-sand" screen, which was manufactured with an inside simple screen and produced for about a decade.
Thanks to the experience and to the advanced technological machineries, nowadays it is possible to manufacture water screen with diameters from 60 to 1000 mm and with lengths upto 12 metres.
It is the Johnson screen type that through the past years has been employed more and more, just for its excellent technical features.
The water screen, manufactured with a trapezoidal / triangular section of the spiral wrapped wire on loading rods according to the generators of a cylinder, can have slots from 0,20 mm onwards, so as to satisfy every request and every projecting need or of installation.
As already known, spiral screen for water well, like Johnson type screens, have, with equal diameter and slot, bigger opening surfaces than the ones of other kinds of screens (bridge or simple slot screen).
The higher percentage of opened area enlarges the profit of water. In Johnson screens type, the wide opened area simplifies enormously (in comparison with other screens) the washing of the well when, for instance, it is necessary to eliminate the mud panel.
In favour of the spiral Johnson type screens there is the chance to have smaller slots than the ones of other kinds of screen.
This is a great advantage when you have to filter waters in slimy soils where it is therefore necessary that the drain is of a very low grain size and that, at the same time, it cannot pass through the screen for water well itself.
Moreover, in rotation perched wells by inverted circulation, if the hollow space hole/casing is very small and such not to allow the forming of artificial drains,
it is better to employ these Johnson type screens with slots of 0,20 mm.
| Material | SS304, SS304L, SS316, SS316L, SS321, Duplex, Hastelloy, etc | ||||||
| OD Range | 19mm-2000mm | ||||||
| ID Range | 13mm-1981mm | ||||||
| Length Range | Up to 6000 mm | ||||||
| Slot Range | 20 micron to 3000 micron (Tolerance:+-5 micron) | ||||||
| Wedge Wire | 0.5x1.5 | 0.75x1.5 | 1x2 | 1.5*2 | 2x3 | 2*4 | 3*5 |
| Support Rod | 1.5x2.5 | 1.5x2.5 | 1.5x2.5 | 1.8*2.5 | 2x3 | 2x4 | 3x5 |
| 2x3 | 2x3 | 2x3 | 2x3 | 2x4 | 3x5 | 3x6 | |
| 3x5 | 3x6 | 3x10 | |||||
| 3x6 | 3x10 | 4x7 | |||||
| 3x10 | 4x7 | 5x6 | |||||
| 4x7 | 5x6 | 5x8 | |||||
| End Finishing | Thread fitting, Flange, Closed Plated, Resistance welded closed plate, Metal Ring, etc | ||||||
| Note | Customized According To Requirement | ||||||
Company : hengshui guangxing screens learned advanced production experiences , our company has advanced production technology and innovative design . We can provide global client first- class filtration products . Until now , Schroeder is the only one in China who can manufacture wedge wire screen pipe perfect round with smooth surface . Our products quality is far higher than that is from similar suppliers in china.
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