9.2Tolerances

IS 1239 (Part 2):2011, Steel Tubes, Tubulars and Other Steel Fittings — Specification, Part 2 Steel Pipe Fittings

Last Updated 29 Oct 2026

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9.2.1

Where maximum and minimum dimensions are not specified, the tolerance for centre to face and centre to centre dimensions shall be as specified in Table 29.

9.2.2 Tolerance for the Alignment of Threads

The axes of the threads shall be coincident with the theoretical axes of the fitting within a tolerance of ±0.5° on the run and on the branches.

9.2.3

Thread tolerances shall be in accordance with those specified in IS 554.

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