SIST ISO 228-1:1995

Pipe threads where pressure-tight joints are not made on the threads -- Part 1: Dimensions, tolerances and designation

Filetages de tuyauterie pour raccordement sans étanchéité dans le filet -- Partie 1: Dimensions, tolérances et désignation

Cevni navoji. pri katerih tesnjenje ni izvedeno z navojem - 1. del: Mere, tolerance in označevanje

General Information

• Status: Withdrawn
• Publication Date: 31-Oct-1995
• Withdrawal Date: 04-May-2011
• ICS: 21.040.30 - Special screw threads
• Technical Committee: TLP - Pressure vessels
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 04-May-2011
• Due Date: 27-May-2011
• Completion Date: 05-May-2011
• Ref Project: ISO 228-1:1994 - Pipe threads where pressure-tight joints are not made on the threads

RELATIONS

• Replaced By: SIST EN ISO 228-1:2003 - Pipe threads where pressure-tight joints are not made on the threads - Part 1: Dimensions, tolerances and designation (ISO 228-1:2000)
• Effective Date: 01-Jun-2011

Standards Content (sample)

INTERNATIONAL
IS0
STANDARD 228-l
Third edition
1994-05-15
Pipe threads where pressure-tight joints
are not made on the threads -
Part 1:
Dimensions, tolerances and designation
Filetages de tuyauterie pour raccordement sans 6tanch6it6 dans le
filet -
Partie 1: Dimensions, tolkances et d&ignation
Reference number
IS0 228-1: 1994(E)
---------------------- Page: 1 ----------------------
IS0 228=1:1994(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International 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, governmental
and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(I EC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 228-l was prepared by Technical Committee
ISO/TC 5, Ferrous metal pipes and metallic fittings, Subcommittee SC 5,
Threaded or plain end butt-welding fittings, threads, gauging of threads.
This third edition cancels and replaces the second edition
(IS0 228-l :I 982), which has been technically revised.
IS0 228 consists of the following parts, under the general title Pipe
threads where pressure-tight joints are not made on the threads:
- Part I: Dimensions, tolerances and designation
- Part 2: Verification by means of limit gauges
Annex A of this part of IS0 228 is for information only.
0 IS0 1994

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced

or utilized in any form or by any means, electronic or mechanical, including photocopying and

microfilm, without permission in writing from the publisher.
International Organization for Standardiza tion
Case Postale 56 l CH-121 1 Geneve 20 l Switzerland
Printed in Switzerland
---------------------- Page: 2 ----------------------
IS0 228=1:1994(E)
INTERNATIONAL STANDARD * IS0
Pipe threads where pressure-tight joints are not made
on the threads -
Part 1:
Dimensions, tolerances and designation
maintain registers of currently valid International
1 Scope
Standards.
This part of IS0 228 specifies the requirements for
IS0 7-l :I 994, Pipe threads where pressure-tight
thread form, dimensions, tolerances and designation
joints are made on the threads - Part I: Dimensions,
for fastening pipe threads, thread sizes l/16 to 6 in-
tolerances and designation.
clusive. Both internal and external threads are parallel
threads and intended for the mechanical assembly of
the component parts of fittings, cocks and valves,
3 Symbols
accessories, etc.
These threads are not suitable as jointing threads
G Pipe thread where pressure-tight joints are not
where a pressure-tight joint is made on the thread. If made on the threads
assemblies with such threads must be made
A Tighter class of tolerance of external pipe
pressure-tight, this should be effected by compress-
threads where pressure-tight joints are not
ing two tightening surfaces outside the threads, and
made on the threads
by interposing an appropriate seal.
B Wider class of tolerance of external pipe threads
NOTES
where pressure-tight joints are not made on the
1 For pipe threads where pressure-tight joints are made
threads
on the threads, see IS0 7-l.
H Height of the triangle of the thread profile
2 IS0 228-2 gives details of methods of verification of
fastening thread dimensions and form, and recommended
h Height of the thread profile with rounded crests
gauging systems.
and roots
r Radius of rounded crests and roots
P Pitch
2 Normative reference
D = d; major diameter of the internal thread
The following standard contains provisions which,
through reference in this text, constitute provisions
= D - 1,280 654 P = d,; minor diameter of the
of this part of IS0 228. At the time of publication, the
internal thread
edition indicated was valid. All standards are subject
to revision, and parties to agreements based on this
= D - 0,640 327 P = dZ; pitch diameter of the
part of IS0 228 are encouraged to investigate the
internal thread
possibility of applying the most recent edition of the

standard indicated below. Members of IEC and IS0 d Major diameter of the external thread

---------------------- Page: 3 ----------------------
fJ3 IS0
IS0 228=1:1994(E)
Figure 1 shows fastening threads with full form pro-
= d - 1,280 654 P; minor diameter of the ex-
ternal thread files and their tolerances, figure 2 shows fastening
threads with truncated profiles and their tolerances.
= d - 0,640 327 P; pitch diameter of the ex-
ternal thread
5 Designation
D1 Tolerance on the minor diameter of the internal
The designation of threads according to this part of
thread
IS0 228 shall consist of the following elements in the
sequence given:
T o2 Tolerance on the pitch diameter of the internal
thread
5.1 The description block shall be
...

SLOVENSKI STANDARD
SIST ISO 228-1:1995
01-november-1995

&HYQLQDYRMLSULNDWHULKWHVQMHQMHQLL]YHGHQR]QDYRMHPGHO0HUHWROHUDQFHLQ

R]QDþHYDQMH
Pipe threads where pressure-tight joints are not made on the threads -- Part 1:
Dimensions, tolerances and designation

Filetages de tuyauterie pour raccordement sans étanchéité dans le filet -- Partie 1:

Dimensions, tolérances et désignation
Ta slovenski standard je istoveten z: ISO 228-1:1994
ICS:
21.040.30 Posebni navoji Special screw threads
SIST ISO 228-1:1995 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 228-1:1995
---------------------- Page: 2 ----------------------
SIST ISO 228-1:1995
INTERNATIONAL
IS0
STANDARD 228-l
Third edition
1994-05-15
Pipe threads where pressure-tight joints
are not made on the threads -
Part 1:
Dimensions, tolerances and designation
Filetages de tuyauterie pour raccordement sans 6tanch6it6 dans le
filet -
Partie 1: Dimensions, tolkances et d&ignation
Reference number
IS0 228-1: 1994(E)
---------------------- Page: 3 ----------------------
SIST ISO 228-1:1995
IS0 228=1:1994(E)
Foreword
IS0 (the International Organization for Standardization) is a worldwide
federation of national standards bodies (IS0 member bodies). The work
of preparing International 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, governmental
and non-governmental, in liaison with ISO, also take part in the work. IS0
collaborates closely with the International Electrotechnical Commission
(I EC) on all matters of electrotechnical standardization.
Draft International Standards adopted by the technical committees are
circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting
a vote.
International Standard IS0 228-l was prepared by Technical Committee
ISO/TC 5, Ferrous metal pipes and metallic fittings, Subcommittee SC 5,
Threaded or plain end butt-welding fittings, threads, gauging of threads.
This third edition cancels and replaces the second edition
(IS0 228-l :I 982), which has been technically revised.
IS0 228 consists of the following parts, under the general title Pipe
threads where pressure-tight joints are not made on the threads:
- Part I: Dimensions, tolerances and designation
- Part 2: Verification by means of limit gauges
Annex A of this part of IS0 228 is for information only.
0 IS0 1994

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced

or utilized in any form or by any means, electronic or mechanical, including photocopying and

microfilm, without permission in writing from the publisher.
International Organization for Standardiza tion
Case Postale 56 l CH-121 1 Geneve 20 l Switzerland
Printed in Switzerland
---------------------- Page: 4 ----------------------
SIST ISO 228-1:1995
IS0 228=1:1994(E)
INTERNATIONAL STANDARD * IS0
Pipe threads where pressure-tight joints are not made
on the threads -
Part 1:
Dimensions, tolerances and designation
maintain registers of currently valid International
1 Scope
Standards.
This part of IS0 228 specifies the requirements for
IS0 7-l :I 994, Pipe threads where pressure-tight
thread form, dimensions, tolerances and designation
joints are made on the threads - Part I: Dimensions,
for fastening pipe threads, thread sizes l/16 to 6 in-
tolerances and designation.
clusive. Both internal and external threads are parallel
threads and intended for the mechanical assembly of
the component parts of fittings, cocks and valves,
3 Symbols
accessories, etc.
These threads are not suitable as jointing threads
G Pipe thread where pressure-tight joints are not
where a pressure-tight joint is made on the thread. If made on the threads
assemblies with such threads must be made
A Tighter class of tolerance of external pipe
pressure-tight, this should be effected by compress-
threads where pressure-tight joints are not
ing two tightening surfaces outside the threads, and
made on the threads
by interposing an appropriate seal.
B Wider class of tolerance of external pipe threads
NOTES
where pressure-tight joints are not made on the
1 For pipe threads where pressure-tight joints are made
threads
on the threads, see IS0 7-l.
H Height of the triangle of the thread profile
2 IS0 228-2 gives details of methods of verification of
fastening thread dimensions and form, and recommended
h Height of the thread profile with rounded crests
gauging systems.
and roots
r Radius of rounded crests and roots
P Pitch
2 Normative reference
D = d; major diameter of the internal thread
The following standard contains provisions which,
through reference in this text, constitute provisions
= D - 1,280 654 P = d,; minor diameter of the
of this part of IS0 228. At the time of publication, the
internal thread
edition indicated was valid. All standards are subject
to revision, and parties to agreements based on this
= D - 0,640 327 P = dZ; pitch diameter of the
part of IS0 228 are encouraged to investigate the
internal thread
possibility of applying the most recent edition of the

standard indicated below. Members of IEC and IS0 d Major diameter of the external thread

---------------------- Page: 5 ----------------------
SIST ISO 228-1:1995
fJ3 IS0
IS0 228=1:1994(E)
Figure 1 shows fastening threads with full form pro-
= d - 1,280 654 P;
...