IS 13159 : Part 1 : 1993 Pipe Flanges and Flanged Fittings - Specification - Part 1 : Dimensions

1 Scope

This standard covers dimensions, tolerances, marking, testingand methods of designating openings for pipe flanges and flangedfittings in sizes DN15 to DN600. Flanges and flanged fittings maybe cast or forged. Blind flanges and reducing flanges without hubsmay also be made from plate. The ratings are applicable for typeand form of fittings as mentioned above.

A flange or flanged fitting used under the Indian BoilerRegulation will be subjected to any/all limitations of thatregulation. This includes any maximum temperature limitation, rulegoverning the use of a material at low temperature or provisionsfor operation at a pressure exceeding pressure temperature ratingsgiven in this standard.

2 References

IS 2825 :1969Code for unfired pressure vessels

IS 3138 :1966Hexagonal bolts and nuts (M42 to M150)

IS 3333 : Part 1 :1967 Dimensions for petroleum industry pipethreads:Part 1 Line pipe threads