... days delivery reply within 12 hours ISO9001,SGS PXZT metallic rings (cascade ring, pall ring, conjugate ring, intalox ring, flat ring ... , and aluminum alloy2) Main types: pall ring, hypack, raschig rings, saddles, cascade mini rings, etc.3) Thin4) Heat resistant5) Big flow6) Low ... .5×0.41230.972358001818350×29×0.5790.97212133141 PXZT metallic rings - metallic random packing