IS: 780 - 1984 (Reaffirmed in 1990); Specification for sluice valves for water works purposes (50 to 300 mm size)
IS: 780 - 1984 (Reaffirmed in 1990); Specification for sluice valves for water works purposes (50 to 300 mm size)
- New Delhi BIS 1984
- 28p
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