Standard
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AS ISO 7.2-2008
[Current]Pipe threads where pressure-tight joints are made on the threads, Part 2: Verification by means of limit gauges
Adopts ISO 7-2:1994 to specify the geometry of screw threads suitable for connecting pipes (tubes) used for conveying fluids.
Published: 13/02/2008
Pages: 30
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Introduction
1 Scope
2 Normative reference
3 Terms and definitions
4 Symbols
5 Design of gauges
5.1 General
5.2 Taper full form threaded plug gauges (gauges No. 1 and No. 2)
5.2.1 Taper full form threaded plug gauge (gauge No. 1)
5.2.2 Taper full form threaded plug gauge with relief (gauge No. 2)
5.3 Parallel full form threaded ring gauge (gauge No. 3)
5.4 Taper plain ring gauge (gauge No. 4)
5.5 Taper modified thread form check plug gauge (gauge No. 5)
5.6 Parallel modified thread form check ring gauge (gauge No. 6)
6 Use of gauges and checking of pipe threads
6.1 General
6.2 Checking of internal taper (Rc) and internal parallel (Rp) threads
6.3 Checking of external taper (R) threads
7 Gauge dimensions and manufacturing tolerances, checking of new gauges and checking gauges for wear
7.1 Gauge dimensions and manufacturing tolerances
7.1.1 Taper full form threaded plug gauges and parallel full form threaded ring gauges
7.1.1.1 Gauge dimensions
7.1.1.2 Manufacturing tolerances and wear allowances
7.1.2 Taper plain ring gauges
7.1.2.1 Gauge dimensions
7.1.2.2 Manufacturing tolerances and wear allowances
7.1.3 Taper modified thread form check plug gauges
7.1.3.1 Gauge dimensions
7.1.3.2 Manufacturing tolerances
7.1.4 Parallel modified thread form check ring gauge
7.1.4.1 Gauge dimensions
7.1.4.2 Manufacturing tolerances
7.2 Checking of new gauges
7.2.1 Checking of new taper full form threaded plug gauges
7.2.2 Checking of new parallel full form threaded ring gauges
7.2.3 Checking of new plain taper ring gauges
7.2.4 Checking of new taper modified thread form check plug gauges
7.2.5 Checking of new parallel modified thread form check ring gauges
7.3 Checking gauges for wear
7.3.1 Permissible wear on diameters
7.3.2 Checking of gauges for wear
7.4 Marking of gauges
7.4.1 All gauges
Annex A
Cited references in this standard
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