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  • BS 1740-1(1971) : 1971

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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    SPECIFICATION FOR WROUGHT STEEL PIPE FITTINGS (SCREWED BS 21R - SERIES THREAD) - METRIC UNITS

    Available format(s):  Hardcopy, PDF

    Superseded date:  15-07-2000

    Language(s):  English

    Published date:  01-01-1971

    Publisher:  British Standards Institution

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

    Co-operating organizations
    Foreword
    Specification
    1 Scope
    2 Materials
    3 Screwed ends of fittings
    4 Method of specifying outlets
    5 Dimensions and tolerances
    6 Tests
    7 Hot dip galvanizing
    8 Certificate of compliance
    Appendix
    A Method of testing the zinc coating on galvanized
         steel pipe fittings (copper sulphate test)
    Tables
    1 Screwed end of fittings (internal parallel thread
         and external taper thread)
    2 Elbows, tees and crosses, equal
    3 Elbows, equal 45 degrees
    4 Elbows, reducing
    5 Elbows, male and female, equal
    6 Tees, increasing on the branch
    7 Tees, reducing (on the run and branch, or on the
         run only)
    8 Tees, reducing on the branch
    9 Sockets and half sockets, equal
    10 Sockets, reducing
    11 Socket unions
    12 Caps
    13 Plugs
    14 Hexagon backnuts
    15 Hexagon bushes
    16 Nipples, hexagon, equal
    Figures
    1 50 mm x 80 mm tee
    2 40 mm x 25 mm x 25 mm tee
    3 Internal parallel thread (Rp)
    4 External parallel thread (R)
    5 Elbow, equal
    6 Tee, equal
    7 Cross, equal
    8 Elbow, equal 45 degrees
    9 Elbow, reducing
    10 Elbow, male and female, equal
    11 Tee, increasing on the branch
    12 Tee, reducing on the run and branch
    13 Tee, reducing on the run only
    14 Tee, reducing on the branch
    15 Standard socket
    15A Half socket
    16 Faced socket for longscrews (used in conjunction
         with backnut shown in Fig. 22 and appropriate
         thread sealant)
    17 Socket, reducing
    18 Socket union
    19 Cap, flat
    20 Cap, dome
    21 Plugs
    22 Backnut (used with socket shown in Fig. 16)
    23 Bush
    24 Hexagon nipple, equal

    Abstract - (Show below) - (Hide below)

    Describes requirements for welded and seamless wrought pipe fittings of size 6mm to 150mm inclusive, for use with steel tubes to BS 1387, screwed to BS 21 R-series thread. Covers materials, screwed ends of fittings, method of specifying outlets, tests, hot dip galvanizing and certificate of compliance.

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

    Committee PSE/9
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
    Supersedes

    Standards Referenced By This Book - (Show below) - (Hide below)

    BS 4807(1991) : 1991 RECOMMENDATIONS FOR CENTRALIZED LUBRICATION SYSTEMS
    BS 5306-6.1(1988) : 1988 FIRE EXTINGUISHING INSTALLATIONS AND EQUIPMENT ON PREMISES - PART 6: FOAM SYSTEMS - SECTION 6.1: SPECIFICATION FOR LOW EXPANSION FOAM SYSTEMS
    BS 5306-5.2(1984) : 1984 FIRE EXTINGUISHING INSTALLATIONS & EQUIPMENT ON PREMISES - HALON SYSTEMS - HALON 1211 TOTAL FLOODING SYSTEMS
    BS 853-2:1996 (published 1996-03) Specification for vessels for use in heating systems Tubular heat exchangers and storage vessels for building and industrial services
    BS 3445-1(1992) : 1992 AGRICULTURAL WATER TROUGHS AND WATER FITTINGS - SPECIFICATION FOR WATER TROUGH BODIES, SERVICE BOXES AND WATER SUPPLY SYSTEMS
    BS 3405(1983) : 1983 METHOD FOR MEASUREMENT OF PARTICULATE EMISSION INCLUDING GRIT AND DUST (SIMPLIFIED METHOD)
    BS 5306-5.1(1982) : 1982 FIRE EXTINGUISHING INSTALLATIONS AND EQUIPMENT ON PREMISES - HALON SYSTEMS - HALON 1301 TOTAL FLOODING SYSTEMS
    BS 3970-1(1990) : 1990 STERILIZING AND DISINFECTING EQUIPMENT FOR MEDICAL PRODUCTS - SPECIFICATION FOR GENERAL REQUIREMENTS
    BS 5306-2(1990) : 1990 FIRE EXTINGUISHING INSTALLATIONS AND EQUIPMENT ON PREMISES - SPECIFICATION FOR SPRINKLER SYSTEMS
    BS 2745-1(1993) : 1993 WASHER-DISINFECTORS FOR MEDICAL PURPOSES - SPECIFICATION FOR GENERAL REQUIREMENTS
    BS 5885-1(1988) : 1988 AUTOMATIC GAS BURNERS - SPECIFICATION FOR BURNERS WITH INPUT RATING 60 KW AND ABOVE
    BS 5885-2(1987) : 1987 AUTOMATIC GAS BURNERS - SPECIFICATION FOR PACKAGED BURNERS WITH INPUT RATING 7.5 KW UP TO BUT EXCLUDING 60 KW
    BS 5306-6.2(1989) : 1989 FIRE EXTINGUISHING INSTALLATIONS AND EQUIPMENT ON PREMISES - FOAM SYSTEMS - SPECIFICATION FOR MEDIUM AND HIGH EXPANSION FOAM SYSTEMS
    BS 5885(1980) : AMD 5019 INDUSTRIAL GAS BURNERS, OF INPUT RATING 60 KW AND ABOVE
    BS 5306-5.1(1992) : 1992 FIRE EXTINGUISHING INSTALLATIONS AND EQUIPMENT ON PREMISES - HALON SYSTEMS - SPECIFICATION FOR HALON 1301 TOTAL FLOODING SYSTEMS
    BS PAS 33(1999) : 1999 SPECIFICATION FOR THE DESIGN, INSTALLATION AND COMMISSIONING OF GAS FIRED CENTRAL HEATING SYSTEMS IN DOMESTIC PREMISES
    I.S. 3216-2:1989 CODE OF PRACTICE FOR THE BULK STORAGE OF LIQUEFIED PETROLEUM GAS
    NZS 2402P:1987 CODE OF PRACTICE FOR GEOTHERMAL HEATING EQUIPMENT IN ROTORUA
    BS DD251(2000) : 2000 SPRINKLER SYSTEMS FOR RESIDENTIAL AND DOMESTIC OCCUPANCIES - CODE OF PRACTICE

    Standards Referencing This Book - (Show below) - (Hide below)

    BS 3894-1(1965) : 1965 METHOD FOR CONVERTING ELONGATION VALUES FOR STEEL - CARBON AND LOW ALLOY STEELS
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