IS 1538 Pt.12-1976 Specification for cast iron fittings for water, gas and sewage pressure piping Part XII Specific requirements for double socket tees with flanged branches
This standard ( Part XII ) lays down the requirements for dimensions and masses of cast iron pressure pipe fittings of double socket tee with flanged branch type.
IS 1538 Pt.12-1976 history
1976IS 1538 Pt.12-1976 Specification for cast iron fittings for water, gas and sewage pressure piping Part XII Specific requirements for double socket tees with flanged branches