SDR Series Borewell Casing-
1SDR – 47 (4 kg/cm2) – Borewell depth up to 60 feet ( 18 meter)
SDR – 36 (5 kg/cm2) – Borewell depth up to 80 feet ( 24 meter)
SDR – 31 (6 kg/cm2) – Borewell depth up to 100 feet ( 30 meter)