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BOS ISO 7-1_1994
P330.60
Pipe threads where pressure-tight joints are made on the threads — Part 1: Dimensions, tolerances and designation
Description
This part of ISO 7 specifies the requirements for thread form, dimensions, tolerances and designation for jointing pipe threads, sizes 1 /16 to 6 inclusive, for joints made pressure-tight by the mating of the threads. These threads are taper external, parallel
internal or taper internal and are intended for use with pipes suitable for threading and for valves, fittings or other pipeline equipment interconnected by threaded joints. An appropriate jointing medium should be used on the
thread to ensure pressure-tight joints.
NOTES
1 Parallel external pipe threads are not suitable as jointing
threads.
2 For pipe threads where pressure-tight joints are not
made on the threads, see ISO 228-1.
3 ISO 7-2 gives details of methods of verification of jointing
thread dimensions and form and recommended gauging
systems.