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The meaning of Pall ring filler
- Aug 13, 2018 -

was developed by the German BASF company on the basis of the Reschig filler in the 1940s, it is made of metal thin plate punching, on the ring wall out of two rows with the inner extension of the tongue of the window hole, each row of Windows has five of the tongue curved into the ring, pointing to the ring heart, in the center almost phase, the top and bottom of the two-storey window hole position staggered,General openings of the total area of about 35% of the entire ring area.