15 to 25%
25 to 35 %
35 to 45 %
40 to 50 %
Fallow
Phosphoric
Hydrochloric acid
Alcohol and resin
5 kg/cm2
6 kg/cm2
8 kg/cm2
10 kg/cm2
5 cm to 100 cm diameter
5 cm to 120 cm diameter
5 cm to 130 cm diameter
5 cm to 140 cm diameter
Flow test
Pressure t
Vacuum test
Hydraulic test