I'm Joanna sun from China  hengshui guangxing screen Co.Ltd 

We manufacture a number of pre-coated candles wedge wire screen (vertical filtration elements, beer candles ) for the clarification Kieselguhr alluvial filters /Candle Precoat Filters of beer.
these cartridges generally have a diameter of between 27 and 38mm, a length of between 1000 and 2000mm, and have slots ranging from 25 to 60m.
Filtration is performed by a pre-coated layer (Kieselguhr type or other). Cleaning of the filter cake formed on the candle is achieved by a counter current flow.

Wedge wire candle, beer candles 'FEATURES: 
Stainless steel 316L candle filter with 25 microns slot size candle filter elements.                                                                                                       
Wire diameter: 1.5x2mm, 2x3mm, 3x5mm; Backwashable welded wedge wire FOTI tubes
Low heel volume
Easy to clean smooth filtration surface
Outside to inside flow
No moving parts