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AS
AS 1722.1-1975

AS 1722.1-1975

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Pipe threads of Whitworth form Sealing pipe threads (metric units)

Available format(s)

Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users

Superseded date

13-02-2008

Superseded by

AS ISO 7.2-2008
AS ISO 7.1-2008

Language(s)

English

Published date

01-01-1975

Publisher

Standards Australia

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Hardcopy - English
PDF 1 User - English
PDF 3 Users - English
PDF 5 Users - English
PDF 9 Users - English
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1 - AS 1722.1-1975 PIPE THREADS OF WHITWORTH FORM - SEALING PIPE THREADS (METRIC UNITS)
4 - PREFACE
5 - CONTENTS
6 - SECTION 1. SCOPE AND GENERAL
6 - 1.1 SCOPE.
6 - 1.2 STANDARD SERIES.
6 - 1.3 DESIGNATION OF THREADS AND JOINTS.
7 - 1.4 TERMS AND DEFINITIONS.
7 - 1.4.1 Pitch cone
7 - 1.4.2 Major cone
7 - 1.4.3 Minor cone
7 - 1.4.4 Gauge diameter
7 - 1.4.5 Gauge plane
7 - 1.4.6 Simple pitch diameter
7 - 1.4.7 Major diameter
7 - 1.4.8 Minor diameter
7 - 1.4.9 End face of external thread
7 - 1.4.10 End face of internal thread
7 - 1.4.11 Gauge length
7 - 1.4.12 Full thread
7 - 1.4.13 Incomplete thread
8 - 1.4.14 Runout thread
8 - 1.4.15 Useful thread
8 - 1.4.16 Total thread
8 - 1.4.17 Vanish cone
8 - 1.4.18 Fitting allowance
8 - 1.4.19 Wrenching allowance
12 - SECTION 2. THREAD FORM, LIMITS AND ASSEMBLY
12 - 2.1 BASIC AND DESIGN FORMS (PROFILES).
12 - 2.1.1 General.
12 - 2.1.2 Basic Form of Series RP and RL.
12 - 2.1.3 Basic Form of Series R and RC.
13 - 2.2 LIMITING DIMENSIONS, TOLERANCES AND DEVIATIONS.
13 - 2.2.1 General.
13 - 2.2.2 Tolerance Zones.
15 - 2.2.3 Tolerances for Taper Thread of Series R and RC.
15 - 2.2.4 Tolerances and limits for Sealing Parallel Threads of Series RP.
15 - 2.2.5 Limits for Sealing Parallel Threads of Series RL (Longscrew).
15 - 2.2.6 Fitting Allowance and Useful Thread.
15 - 2.3 ASSEMBLY OF SEALING PIPE THREADS.
15 - 2.3.1 General.
15 - 2.3.2 Limits and Variations in Axial Engagement.
15 - 2.3.3 Wrenching Allowance.
15 - 2.3.4 Accommodation of Maximum Axial Engagement.
16 - SECTION 3. GAUGES AND GAUGING PRACTICE
16 - 3.1 GENERAL.
16 - 3.2 SEALING PIPE THREADS, SERIES RC, RP AND R -TYPES OF GAUGES.
16 - 3.3 DESCRIPTION AND USE OF GAUGES.
16 - 3.3.1 Taper Full Form Screw Ring Gauge (Fig. 6).
16 - 3.3.2 Taper Plain Ring Gauge (Fig. 7).
17 - 3.3.3 Taper Full Form Screw Pl ug Gauge (Fig. 8).
17 - 3.3.4 Taper Plain Plug Gauge (Fig. 9).
17 - 3.4 DIMENSIONS AND TOLERANCES.

Covers designation system, dimensions and gauging of four series of pipe screw threads in the range 4 to 150 mm (1/16 to 6 in) nominal size (bore), suitable for connecting pipes used for conveying fluids, with sealing being effected on the thread surfaces in contact. The series are internal taper (Series RC), internal parallel (Series RP), external taper (Series R) and external parallel (Series RL).

Committee
ME-028
DocumentType
Standard
ISBN
0 7262 0653 9
Pages
16
PublisherName
Standards Australia
Status
Superseded
SupersededBy
Supersedes
UnderRevision

This standard specifies the geometry of screw threads suitable for connecting pipes (tubes) used for conveying fluids.
It is based on ISO 7 and covers taper and parallel thread varieties, intended for sealing on the thread because of the taper. It also includes parallel external threads of the Longscrew Series of BS 21:1973, Pipe Threads for Tubes and Fittings where Pressure-tight Joints are made on the Threads (see Clause 2.2.5).
The standard covers the range of nominal bore sizes 1/16 in (4 mm) to 6 in (150 mm) both inclusive.

Under Revision See DR 96499

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