IS: 781 - 1984 (Reaffirmed - 1990); Specification for Cast Copper alloy Screw Down BIB taps and Stop valves for Water Services

IS: 781 - 1984 (Reaffirmed - 1990); Specification for Cast Copper alloy Screw Down BIB taps and Stop valves for Water Services - New Delhi BIS 1985 - 13p

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