This standard covers dimensions, tolerances, mark-ing, testing and methods of designating openings for pipe flanges and flanged fittings in sizes DN15 to DN600. Flanges and flanged fittings may be cast or forged. Blind flanges and reducing flanges with-out hubs may also be made from plate. Pressure-temperature ratings tables are given in Annex B for various materials. The ratings are applicable for type and form of fittings as mentioned above.
A flange or flanged fitting used under the Indian Boiler Regulation will be subjected to any/all lim-itations of that regulation. This includes any maxi-mum temperature limitation, rule governing the use of a material at low temperature or provisions for operation at a pressure exceeding pressure tem-perature ratings given in this standard.
IS 13159 Pt.1-1993 history
1993IS 13159 Pt.1-1993 Pipe flanges and flanged fittings—Specification Part 1 Dimensions