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    AS 1722.1-1975

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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    Superseded date:  13-02-2008

    Language(s):  English

    Published date:  01-01-1975

    Publisher:  Standards Australia

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    Table of Contents - (Show below) - (Hide below)

    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.

    Abstract - (Show below) - (Hide below)

    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).

    Scope - (Show below) - (Hide below)

    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.

    General Product Information - (Show below) - (Hide below)

    Committee ME-028
    Document Type Standard
    Publisher Standards Australia
    Status Superseded
    Superseded By
    Supersedes
    Under Revision

    History - (Show below) - (Hide below)

    Under Revision See DR 96499

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