ISO 4145:1986
(Main)Non-alloy steel fittings threaded to ISO 7-1
Non-alloy steel fittings threaded to ISO 7-1
Specifies requirements for fittings for threaded connections, used mainly for industrial purposes. Table 1 contains diagrams of types of fittings and their symbols. Tabulates the fitting dimensions (tables 2, 5, 9 to 12) with nominal sizes from DN 6 up to and including DN 100 (thread designation 1/8 to 4). Table 6 contains sockets (DN 6 to DN 150), reducing fittings are included in the tables 3, 7 and 8 (DN 8 DN 100 and DN 6 to DN 80 resp.), table 4 comprises elbows (DN 8 to DN 50).
Raccords en acier non allié, filetés suivant ISO 7-1
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Standards Content (Sample)
--International Standard @ 4145
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION*MEMAYHAPOAHAR OPrAHHBAUHR no CTAHiiAPTH3AUHM.ORGANlSATlON INTERNATIONALE DE NORMALISATION
Non-alloy steel fittings threaded to IS0 7/1
\-
Raccords en acier non allié, filetés suivant IS0 7/ 1
Second edition - 1986-07-15
- !% UDC 621.643.4: 669.14 Ref. No. IS0 414-1986 (E)
Descriptors : pipe fittings, steel products, unalloyed steels, pipe sockets, pipe nipples, pipe bends, pipe plugs, unions, IS0 screw threads,
designations, specifications, dimensions, symbols, proving pressure.
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Price based on 12 pages
Foreword
IS0 (the International Organization for Standardization) is a worldwide federation of
i IS0 member bodies). The work of preparing International
national standards bodies
Standards is normally carried out through IS0 technical committees. Each member
body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, govern-
mental and non-governmental, in liaison with ISO, also take part in the work.
Draft International Standards adopted by the technical committees are circulated to
the member bodies for approval before their acceptance as International Standards by
the IS0 Council. They are approved in accordance with IS0 procedures requiring at
least 75 % approval by the member bodies voting.
International Standard IS0 4145 was prepared by Technical Committee ISO/TC 5,
Ferrous metal pipes and metallic fittings.
This second edition cancels and replaces the first edition (IS0 4145-19791, table 6 of
which has been technically revised.
Users should note that all International Standards undergo revision from time to time
and that any reference made herein to any other International Standard implies its
latest edition, unless otherwise stated.
.
O International Organization for Standardization, 1986 O
Printed in Switzerland
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INTERNATIONAL STANDARD IS0 416-1986 (E)
Non-alloy steel fittings threaded to IS0 7/1
L
IS0 2201 1, Pipe threads where pressuretight joints are not
1 Scope and field of application
made on the threads - Part 1 : Designation, dimensions and
tolerances.
This International Standard specifies requirements for non-
alloy steel fittings for threaded connections in accordance with
IS0 272, Fasteners - Hexagon products - Widths across
IS0 711. used mainly for industrial purposes.
flats.
IS0 254.6, Seamless plain end tubes made from unalloyed steel
2 References
and without quality requirements.
IS0 711, Pipe threads where pressuretight joints are made on
IS0 2547, Welded plain end tubes made from unalloyed steel
the threads - Part 1 : Designation, dimensions and toler-
L
and without quality requirements.
ances.
IS0 4145-1986 (E)
3 .Symbols
See table 1.
lame I - iypes 01 rirrings ana rneir symnois
Diagram Svmbol Table
Elbows, equal and reducing Al
2 and 3
Male and female elbows A4 4
Tees, equal and reducing 81 2 and 3
Crosses c1 2
Half sockets M1 5
Sockets, equal and reducing M2 6 and 7
Reducing bushes N4 8
Hexagon nipples N8 9
Caps T2 10
Plugs T8 11
Unions U1 or U11 12
IS0 4145-1986 (E)
4 Materials 7 Widths across flats
The fittings shall be made from rolled steel, forged steel, etc. Widths across flats, s, shall comply with IS0 272 except for
having characteristics and properties at least equal to those of caps and unions.
the steel TS.0 specified in IS0 2546 andlor the steel TW.0
specified in IS0 2547. Free-cutting steels can be used for
machined parts. 8 Hydraulic test pressure
The fittings shall be capable of withstanding a hydraulic test
pressure of 50 baril.
5 Dimensions
Unspecified dimensions are at the discretion of the manufac-
If tests are required, this shall be stated at the time of enquiry or
turer. order. The manufacturer may substitute for the hydraulic test
other tests which ensure an equivalent leak-tightness.
The drawings are diagrammatic, without prejudice to the
manufactured form.
9 Designation of fittings
6 Threads
The fittings complying with this International Standard shall be
designated by the following particulars, in the sequence
shown :
6.1 Choice of thread
a) type of fitting (see table 1);
Fittings shall be threaded in accordance with IS0 711
b) reference to this International Standard;
...
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