Product Name：Alfa BAO'ER ring

Number

Nominal
dimension
(mm)

outer-diameter
and height
(mm)

unit volume
(Piece/m²)

pile weight
(kg/m²)

ratio surtace
area
(m²/m³)

gap ratio
(m³/m³) 

1

A50-6

57*51

6035

49.5

90

0.94

2

A90-7

88*66

1957

33.3

76

0.96

3

A90-8

88*88

1614

54

70

0.91