IS 1538 Pt.22-1976 Specification for cast iron fittings for water, gas and sewage pressure piping, Part XXII Specific requirements for sump or body flanges
This standard ( Part XXII) lays down the requirements for dimensions and masses of cast iron pressure pipe fittings of split puddle or body flanges type.
IS 1538 Pt.22-1976 history
1976IS 1538 Pt.22-1976 Specification for cast iron fittings for water, gas and sewage pressure piping, Part XXII Specific requirements for sump or body flanges