metal Pall Ring is special suitable for the vacuum rectifying apparatus, processing the thermo-sensitive. Data of Geometrical Characteristics Parameters of metal Pall Ring:     

Type	DimensionD x H x δmm	Quantityn/m3	Specific Surface(a)m 2 /m 3	Bulk Densityγ pkg/m 3	Free Volume( ε)m3/m3	Packing Factor (dry)(a)m 2 /m 3
Dg25	25 x 25 x 0.5	51500	174	390	0.961	---
Dg38	38 x 38 x 0.6	13500	101	280	0.964	---
Dg50	50 x 50 x 0.8	6700	68	335	0.970	---
Dg76	76 x 76 x 1.0	1700	45	230	0.970	---

304 metal pall ring