lS1239(Partl ): 1990
(
Reaffirmed 1998)
Wim
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Indian Standard
MILD STEEL TUBES, TUBULARS AND OTHER
WROUGHT STEEL FITTINGS —
SPECIFICATION
PART 1 MILD STEEL TUBES
(Fijith Revision)
January 1991
-.
Third Reprint FEBRUARY 2002
UDC 621.643.2 [ 669.141.24 ]
.
OBIS 1991
BUREAU OF INDIAN STANDARDS
MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG
NEW DELHI 110002
\
Price Group 4
$
i
Steel Tubes, Pipes and 1 ,ttings Sectional Committee, MTD 19
FOREWORD
This Indian Standard ( Part 1 ) ( Fifth Revision ) was adopted by the Bureau of Indian Standards
on ’20
Aprill 990, after the draft finalized by the Steel Tubes, Pipes, and Fittings Sectional
Committee had been approved by the Metallurgical Engineering Division Council.
This standard was first published in 1958 and subsequently revised in 1964, 1968, 1973 and 1979
respectively.
In this revision, the following main modifications have been made:
a)
b)
c)
Eddy current test as a part of non-destructive testing has been introduced in this
specification as an alternate to hydraulic test based on the international practice and
experience gained in the country.
Other methods of non-destructive testing may be
considered for inclusion in lhe specification
, as and when sufficient experience is gained in
the country.
Requirements of sockets nave been deleted from this Indian Standard and are being covered
suitably through amendment No. 2 to IS 1239 ( Part 2 ) :1982.
Reference has been given to IS 10748:1984 for manufacture of steel tubes.
Where the use of tubes is not controlled by bvelaws or regulations, a reference should be made
to the code of practice relating to the particular’ application’:
In this country, the regulations governing the use of tubes for conveying steam are laid down
in the Indian Boiler Regulations published by the Central Boilers Board.
While formulating this standard, due consideration has been given to the trade practices followed
in the country in this field. Due consideration has also been given to international coordination
among the standards prevailing in different countries.
Assistance has been derived from the
&
following publications:
Ii
fq
1S0 65: “1981 Carbon steel tubes suitable for screwing in accordance with 1S0 7/1.
}
..
j
International Organization for standardization.
1~
BS 1387:1985 Screwed and socketed steel tubes and tubulars and for plain end steel tubes
~
suitable for welding or for screwing to BS 21 : 1985 Pipe threads fur tubes and
fitting where pressure-tight joints are made on the threads. British Standards
Institution.
.
This standard contains clauses 6.3s 7.1$ 11.2, 13.1, 16.2 and 17.2.1 which call for an agreement.
bet\veen the manufacturer and the purchaser.
.
For the purpose of deciding whether a particular requirement of this standard is complied with,
the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded
off in accordance with IS 2.: 1960 ‘Rules for rounding off numerical values ( revzkd )’. The
number of significant places retained in the rounded off value should be the same as that of the
specified value in this standard.
,.,
IS 1239( Part 1 ) :1930
Indian Standard
I
I
MILD STEEL TUBES, TUBULARS AND OTHER
WROUGHT STEEL FITTINGS — SPECIFICATION
PART 1 MILD STEEL TUBES
( Fifth Revision]
1 SCOPE
1.”1 This standard ( Part 1 ) covers the require-
ments for welded and seamless plain end or
screwed arid socketed mild steel tubes intended
for use in water, gas, airlines and steam.
1.2 Medium and heavy tubes only are, recom-
mended for carrying steam services.
The
maxiqmm permissible pressure and temperatures
for different sizes of tubes are given in Annex A
fot guidance only.
2 BZFERENCES
2.1 The Indian Standards listed in Annex B are
necessary adjuncts to thk standard.
3 TERMINOLOGY
3.0 For the purpose of this standard, the
following definitions shall apply.
3.1 Black Tube
Tube as manufactured, without any subsequent
surface treatment.
3.2 Nominal Bore
A size reference denoting the approximate bore
of the tube. For each size of tube, the outside
diameter is fixed by the corresponding screw
thread dimensions of IS 554:1985, and there-
fore, the actual’ bore of each size of tube will
vary according to the thickness.
3.3 Plain End
The ends are cleanly finished by normal
deburring process.
3.4 Tube Pipe
A long, hollow, open-ended object of circular
or other cross-section.
The term tube is
synonymous wuth the term pipe.
3.5 Socket
The screwed coupling utilized in jointing the
tubes together.
1
INo~Nr— The term socket is synonymous with. the term
3.6 Length
3.6.1 Random Length
Normal manufacturing lengths which may vary
over a wide range; alternatively, a length range
may be agreed to between the purchaser and
the manufacturer.
3.6.2 Exact Length of Screwed and Socketed Tube
The length of the tube inclusive of the socket.
3.6.3 Length of Screwed and Socketed Tube
The length of the tube exclusive of the socket on
one end with handling-tight.
NOTE — Handling-tight means that the socket is so
tight fitted that it should not fall down during handling
or transit.
4 DESIGNATION
4.1 Mild steel tubes covered by this standard
shall be designated by their nominal bore, and
shall be further classified as light, medium and
heavy depending on the wall thickness; and
screwed and socketed or plain-end to denote
end condition,
and black or galvanized to
denote surface condition.
5 SUPPLY OF MATERIALS
5.; G;;~al rre~uir:~:m:s relating to the supply
shall co~form to
IS 1387:1967.
6 MANUFACTURE
6.1 Seamless Steel Tubes
Shall be made from tested quality steel
manufactured by any approved process and
shall be fully killed. The sulphur and phosphorus
requirements in steel shall not exceed” 0“05
percent each.
The welded tubes shall be
manufactured from hot-rolled steel skelp/strips
con forrtiing to 1S 10748: 1984.
,,
,
IS 1239 ( Part 1 ) :1990
6.2 Steel tubes shall be manufactured by one of
the fol!cswing processes:
a) Hot-finished seamless ( HFS );
b) Electric resistance welded ( ERW );
c) High frequency induction welded ( HFIW);
d) Hot finished welded ( HFW ); and
e) Cold finished seamless ( CDS ).
NOTE – Tuiws made by manual welding are not
covered by thn specification.
6.3 ‘L,ght’, ‘Medium’ and ‘Heavy’ tubes shall
be either welded or seamless as agreed to
between the purchaser and the manufacturer.
6.4 If so specified by the purchaser, the height
of the internal weld fin shall not be greater than
60 percent of the specific 3 thickness.
6.5 All electric welded tubes used for steam
services shall be normalized.
Only medium
and heavy class of tubes shall normally be used
for steam services.
NOTE – HFS and HFW tube. need not be normalized.
7 CHEMICAL COMPOSITION
7.1 The chemical analysis of steel tubes shall be
carried out only for sulphur and phosphorus
requirements.
7.1.1 The analysis of steel shall be carried out
either by the method specified in IS 228 and its
relevant parts or “ any other established
instrumental/chemical methods. In case of
dispute the procedure given in IS 228 and its
relevant parts shall be the referee method. How-
ever, where the method is not given in IS 228
and its relevant parts, the referee methodsh all
be as agreed to betlveen the purchaser and the
manufacturer.
7.1.2 Product Analysis
The maximum permissible variation of stdphur
and phosphorus in the case of product analysis
from the limits stated in 6.1 shall be 0“005
percent each.
8 DIMENSIONS
8.1 The dimensions and nominal mass of tubes
shall be in accordance with Tables 1, 2 and 3,
sul)ject
to the tolerances permitted in 9.
8.1.1 Thickness and mass mentioned in Tables
1, 2 and 3 are applicable to both black and
galvanized tubes.
9 TOLERANCES ON THICKNESS AND
MASS
9.1 The
following manufacturing tolerances
shall be permitted on the. tubes and sockets:
a) Thickness:
1) Seam welded
+ Not limited
Light tubes
– 8 percent
Medium and heavy + Not limited
tubes
- 10 percent
2) Seamless tubes
+ Not limited
— !2” 5 percent
b) Weight
1)
2)
3)
4)
NOTE
Single tube
( light + 10 percent
series )
— 8 percent
Single tube ( medium + 10 percent
and heavy series )
For quantities per load & 5 percent
of 10 tonnes, Min ( light
series )
For quantities per load & 7:5 percent
of 10 tonnes, Min
( medium and heavy
series ]
—
For the purpose of a minimum weizhment of
10 tonnes lot, the w>igkment may be done in c&venient
lots at the option of the manufacturer.
10 JOINTS
10.1 All screwed tubes shall be supplied with
pipe
threads conforming
to IS 554:1985.
.Gauging in accordance with IS 8999:1979 shall
be considered as an adequate test for con-
formity of threads of IS 554:1975.
10.1.1 Unless specified otherwise, tubes shall be
supplied screwed with taper threads.
10.1.1.1 However, in the case of ‘light’ tubes,
the application of taper pipe threads may be
modified by permitting the outside diameter of
the tubes to be within the limits shown in
CO1 2 and 3 of Table 1.
Where the tube
approaches the lower limit of outside diameter,
some incomplete thr,eads (perfect “at root and
imperfect at the crest ) may be expected from
and beyond the gauge plane.
Such incomplete
threads shall not be regarded as justification
for rejection of the tubes. Also, the
minimum
length of threads in ‘light: tubes shall be 80
percent of that specified in IS 554:1985.
10.2 Each tube shall be supplied with one
socket conforming to IS 1239 ( Part 2 ) :1982.
11 LENGTH!J
11.0 Following tolerances shall be applied on
lengths of tubes.
2
IS 1239 ( Part 1 ) :1990
Table 1 Dimensions and Nominal Mass of Steel Tubes
— Light
(C&zuseJ8.1 and 10.1.1.1)
Nominal
Bore
Outxide Diameter
A
————— _——. ——
T
Ga;imum
Minimum
l%ickmeaa Mxxa of Tube
‘Plain
Screwed ‘
End
and Socketed
(1)
(2)
(3) (4)
(5)
(6)
kg/m kg/m
0“360
W363
0“515 0519
0“670
0“676
mm
9“7
13.2
16”7
mm
10”1
13”6
17”1
1“8
I“8
1“8
2L”4
269
3Y8
21”0
26”4
33”2
2“0
2T3
2“6
0“947
0956
1“38 1“39
1“98
2“00
41”9
47”8
59’6
42”5
48”4
60”2
2“6
2“9
2“9
2“57
::
3“27
~08 415
971 5“83
C72 689
975 100
65
so
100
76”0
88”7
113”9
75”2
87”9
)1*O
3“2
U
Table 2 Dimensions and Nominal Mass of Steel Tabes — Medium
( Clause 8.1 )
Nominal
Outside Diameter
Bore
~———.. .A_. ———
Maximum
Minimu~
Thicknex9
Maxs of Tube
- — — .- —.———
T
Plain
Screwed
End and Socketed
(1)
(2)
(3) (4)
(5) (6)
mm kg/m kg/m
0407
R
$% tV645
2“3
0“839
0%45
Inm mm
mm
6
1W6
P8
140 13”2
18 17”5 16”7
21”8
27”3
34”2
21”0
26”5
33”!3
1-21
1.56
241
1.22
1.57
2’43
32
40
50
42.9
488
6W8
42.0
47.9
597
3.2
3.2
3.6
3.10
3.13
3.56
3.60
5.03
5.10
766
895
115.0
75.3
88.0
113.1
642
6.54
8.36
8.53
12.2
12.5
1590 16.4
189
19.5
125
150
140.8
166.5
138.5
163.9
4.8
4.8
below 65 mm nominal bore and 7.5 percent of
the total number of lengths for sizes 65 mm
nominal bore and above.
In addition, it shall
be permissible for two lengths to be jointed
together to make a random length, provided
that the number of such jointed lengths does
not exceed 5 percent of the total numbers of
lengths for sizes below 65 mm nominal bore
and 7.5 percent of the total number of lengths
for sizes 65 mm and above.
J1.1 Random Length
4 to 7 m, unless otherwise specified. Includes
one socket for screwed and socketed tubes.
11.1.1 For orders of over 150 m of any one size
of tube, it shall -be permissible to supply short
random lengths from 2 to 4 m, provided that
the number of such lengths does not exceed 5
percent of the total numbers of lengths for sizes
3
-&
IS 1239( Part 1 ) :1890
the finished tubes shall be capable of with-
standing the bend test without showing any
signs of fracture or failure. Welded tubes shall
be bent with the weld at 90° to the plane of
bending. The tubes shall not be filled for this
test.
14.2.1 Ungalvanized tubes shall be capable of
being bent cold, without cracking, through 180°
round a former having a radius at the bottom
of groove, in the plane of bending, equal to six
times the outside diameter of the tube.
14.2.2 Galvanized tubes shall be capable of
being bent cold, without cracking of the steel,
through 90° round a former having a radius at
the bottom of the groove equal to eight times
the outside diameter of the tube.
14.3 Flattening Test on Tubes Above 50 mm
Nominal Bore
Rings, not less than 40 mm in length, cut from
the ends of selected tubes, shall be flattened
between parallel plates with the weld if any at
90° ( point of maximum bending) in accordance
with IS 2328: 1983. No opening shall occur by
fracture in the weld until the distance between
the plates is less than 75 percent of the original
outside diameter of the pipe and no cracks or
breaks in the metal elsewhere than in the weld
shall occur until the distance between the plates
is less than 60 percent of the original outside
diameter.
14.3.1 The test rings may have the inner and
outer eclges rounded.
14.4 Retest
Should any one of the test pieces first selected
fail to pass any of the tests specified above, two
further samples shall be selected for testing in
respect of Each faiiure. Should the test pieces
from both these additional samples pass, the
material shall be deemed to comply with the
requirements of that particular test. Should
the test pieces from either of these additional
samples fail, the material represented by the
test samples shall be deemed as not complying
with the standard.
15 WORKMANSHIP
15.1
All pipes shall be cleanly finished and
reasonably free from injurious defects.
The
ends shrill be cleanly cut and reasonably square
with axis of the pipe.
The tubes shall be
reasonably straight.
16 SAMPLING OF TUBES
16.1 Lot
For the purpose of drawing samples all mild
steel tubes bearing same designation and
manufactured under a single process shall be
grouped together to constitute a lot. Each lot
shall be sampled separately and assessed for
conformity to this specification.
16.2 Sampling and
Criterion for
Conformity
Unless otherwise agreed to between the manu-
facturer and the purchaser the procedure for
sampling of tubes for various tests and criteria
for conformity shall be as giveninIS4711 :1974.
17 MARKING
17.1 Each tube shall bear legibly the identity of
the source of manufacturer.
17.2 The different classes of tubes shall be
distinguished by colour bands which shall be
applied as follows before the tubes leave the
manufacturer’s works:
‘Light’ tubes, Yellow*
‘Medium’ tubes, Blue
‘Heavy’ tubes, Red.
17.2.1 Unless otherwise mutually agreed to
between the manufacturer and the purchaser, a
whtte colour band shall be appiied at each end
of the tubes for steam services.
17.3 “All long random lengths shall each have
two 75 mm bands, one near each end; all other
lengths shall each have one 75 mm band.
17.3.1 The tubes may also be marked with the
Standard Mark, details for which may be
obtained from the Bureau of Indian Standards.
18 PROTECTION AND PACKING
18.1 Black tubes not otherwise protected shall
be varnished or suitably painted externally
throughout
the
length
unless
ordered
unvarnished or unpainted. Where tubes are
lmndle~ for transport, all qualities of tubes shall
be packed in accordance with IS 4740:1979.
“For export purposes the tubes may be
painted yellow or brown.
-J
-,
IS=(Part 1):1990
ANNEX A
(
Clause 1.2)
MAXIMUM
PERMISSIBLE PRESSURE AND TEMPERATURE FOR
TUBES FOR CONVEYING STEAM
A-1 The maximum permissible pressure and
A-2 For tubes fitted with appropriate flanges or
temperature for tubes with screwed and
suitably butt welded together, the maximum
socketed joints shall be as given in Table 4.
permissible pressure shall be 2-06 MPa and the
maximum permissible temperature 260”C.
T=ble 4 Maximum Permissible Presmme and Ternperatare For Tubes With
Steel Couplings or Screwed and Socketed Joints
( Claw A-1)
Nomhal Bore
(1)
mm
Up to and including 25 mm
Over
25mmup to and including 40 mm
Over 40 mm up to and including 60 mm
Over 60 mm up to and including 100 mm
Over 100 mm up to and including 125 mm
Over 125 mm up to and including 150 mm
NOTE — 1 MPa = 1 N/mms = 01020 kg/mm8
(2)
MPa
1“20
1“03
tY86
069
tV83
069
050
(3)
“c
260
260
260
260
177
171
160
Is No.
228
554:1985
1239
( Part 2 ) :1982
1387:1967
1894:1972
2328:1983
ANNEX B
(
Clause 2.1)
LIST
OF REFERRED INDIAN STANDARDS
Tile
IS
NO.
Methods for chemical analysis 2329: 1985
of steels
Dimensions for pipe threads
where pressure-tigh~ joints are
4711: 1974
made.on threads ( third revi>ion)
Mild steel tubes, tubulars and
other wrought steel fittings :
Part 2 Mild steel tubulars and
4736:
other
wrought
steel pipe
fittings ( third revisrhs )
4740:
General requirements for the
supply of metallurgical
8999:
materials (Jirstretiion )
Method for tensile testing of
steel tubes (j%t revfiion )
986
979
979
h4ethod for flattening test on
10748: 1984
metallic tubes (jht rerrfiiort)
6
Title
Method for bend test on
metallic tubes ( in full section )
(&t reviswn)
Methods for sampling of steel
pipes, tubes and fittings (jht
revirion )
Hot dip zinc coatings on mild
steel tubes (jht reviswn )
Code of practice for packaging
of steel tubes (first revtiion )
Gauging practice for pipe
threads where pressure tight
joints
are required on the
threads
Hot rolled steel skelp/strip for
welded tubes and pipes
IS1239(Partl) :1990
ANNEX C
(
Clause 13.1 )
EDDY CURRENT TESTING OF TUBES AS AN ALTERNATIVE TO
THE HYDRAULIC LEAK TIGHTNESS TEST
C-1 METHODS OF TEST
C-1.l The tubes shall be tested for imperfections
using a concentric coil or a rotating tube or
rotary probe
eddy current
fechnique in
accordance with this Annex,
C-1.2 The tube shall be sufficiently straight to
ensure the validity of the test and the surface
shall be free from any foreign matter that
would interfere with. the interpretation of the
test.
C-1.3
TWO methods of test are ermitted ( at
the manufacturer’s option ).
T~e equipment
may be located ‘on’ or ‘off’ the tube mill.
Method A
The tube to be tested is passed through the (a)
concentric test coil ( applicable to welded or
seamless tubes ), or (b) segmental coil covering
the weld and + 15° arc from weld line
( applicable to welded tubes) on either side.
Method B
The tube to be tested or the test coil assembly
is rotated and translated relative to each other
so the test coil describe a helical path over the
tube surface. The pitch of the helical scan shall
ensure that the whole of the tube surface is
effectively covered.
This method is applicable
to seamless tubes only.
C-2 CALIBRATION OF TEST
EQUIPMENT
C-2.1 The equipment shall be calibrated using
standard tube containing holes as defined
in .C-2.3 for Method A or standard notches as
defined in C-2.4 for Method B. The test piece
for off-line equipment shall have similar
electromagnetic properties and same diameter
and thickness as the tube to be tested. For
online equipment,
running tube may he
considered as standard tube.
C-2.2 Method A
The stand ard defect shall be a circular hole
drilled radially completely through the tube
wall on the welding.
The diameter of the
drill required to make these holes shall be as
7
follows:
Nominal Bor# of Tubes
Drill Dianwter
.mm
Up to and including 15
1“2
20,25-32
1“7
40-50
2“2
65-80
2“7
100-125 3“2
150 3“7
C-2.3 Method B
The standard test piece shall have a longitudinal
notch 0-8 mm or less in width machin~d parallel
to the tube axis
on the outer surface of the
tube. The depth of the notch shall not exceed
12 1/2 percent of the specified thickness of the
tube or 0-3 mm whichever is greater. The
length, of the notch at full depth shall not
exceed 50 mm.
C-3 CALIBRATION PROCEDURE
C-3.1 The equipment and test coils shall be
adjusted to produce in a consistent manner a
clearly identifiable signal from the standard($)
defect on the standard tube and this signal
shall be used to set the trigger/alarm level of
the equipment. For calibration purposes the
relative speed between the standard tube
containing standard defect and the test coils
shall be the same as that used during the
production.
C-3.2 The calibration of the equipment shall
be checked at the commencement and at the
end of each working period and at intervals
not exceeding 2 h.
C-3.3 If on checking during production testing
the reference standard is not detected even after
changing the sensitivity by 2dB to allow for
equipment drift, the equipment shall be recali-
brated.
Following
recalibration,
all tubes
tested since the previous check shall be retested,
unless recordings from individually identified
tubes are available that permit classdlcatjon of
those tubes into ‘suspect’ and ‘acceptable’
categories.
C-4 TEST PROCEDURE
C-4.1 Pass the pipe or tubing to be inspected
through the test
unit at the appropriate
---
---
‘-
IS 1239 ( Part 1 ) :1990
production speed, maintaining the production
spe?d constant within +10 percent under
conditions identical to those used in the
calibration of the equipment.
NOTE — Identical conditions include all instrument
settings, mechanical motion, positioning of the encirclir@
coil(s) in relation to the tube and any other factor that
affect the validity of the technique.
C-5 ACCEPTANCE
C-5.1 Any tube producing a signal lower than
the signals from the standard shall be deemed
to have passed thk test.
C-5.2 Since NDT systems are known to be
sensitive to some features which do not cause a
leak, the tubes rejected by NDT may be retested
hydraulically and whatever tubes pass the
hydraulic test shall be accepted.
C-5.3 The tubes rejected in C-5.1 may also be
retested off-line NDT equipment. Those which
do not produce reject level signals shall be
accepted. Others may be accepted after
cropping of the portion producing reject level
signals.
8
Bureau of Indian Standards
A
-
BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote
harmonious development of the activities of standardization, marking and quality certification of goods and
attending to connected matters in the country.
Copyright
BIS has the copyright of all itspublications. No partof thesepublications maybe reproduced inany form without
the prior permission in writing of
BIS. This does not preclude the free use, in the course of implementing the
standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to
copyright be addressed to the Director (Publications), BIS.
Review of Indian Standards
Amendments are issued to standards as the need arises on the basis of comments. Standards are also reviewed
periodically; a standard along with amendments is reaffirmed when such review indicates that no changes are
needed; if the review indicates that changes are needed, it is taken up for revision. Users of Indian Standards
should ascertain that they are in possession of the latest amendments or edition by referring to the latest issue
of ‘BIS Catalogue’ and ‘Standards : Monthly Additions’.
This Indian Standard has been developed from Doc : No. MTD 19 ( 3565 ).
Amendments Issued Since Publication
Amend No. Date of Issue
Text Affected
BUREAU OF INDIAN STANDARDS
Headquarters:
Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002 Telegrams: Manaksanstha
Telephones: 3230131,3233375,3239402
( Common to all offices)
Regional Offices: Telephone
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{
3378499,3378561
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(
I
\ .
Printed at New India Printing Press, Khurja, India
.
S_
!.
. . . . .
AMENDMENT NO.1 JUNE 1992
To
IS 1239( Part 1 ) :1990 MILD STEEL TUBES,
~UBULARS AND CYl!HERWROUGHT SI’EEL
FITTINGS —
SPECIFICATION
PART 1 MILD STEEL TUBES
(F#h
Revirb)
( Cowrpngqlfhditi&~JimWwti) – Sublrtilllte*
Cxbthlgword
“ ~ ‘f-’~ ‘.
following for *
1
i-
(hge ~ CfUMM~~ ) — Subtitaklk WOKI‘CXC]UdVCoffw‘idusivc’.
(Pqe L clause3s) —subtitu8eUMword %cldve’jiw ‘excludvcoe
(P4rge4clauselad )—suktkute%65#%’@ ‘sAs&’.
(Pu&5,*174)—q*h**mkmMti~b
fWowiagkxu
‘For cxpoti putposcs,b colourbami onthc tuba may be yellow or browm’
1
i
(MTD19)
Printed at New India Printing Press, Khuja, India
NO* 2 DECEMBER 1992 Ii
To
1S 1?39 ( Part 1 ) :1990 MILD STEEL TUBES,
TUMJLARS AND OTHER WROUGHT STEEL
FI’ITINGS —
SPECIFICATION
PART 1 MU.O STEEL TUBES
( El!jthRevision )
( Page 1, clause3.4)
— Substitute ‘Tube/Pipe’ for ‘Tube Pipe’.
[page 1, clause6.1) —
Substitute tke following for the existing
clause.
‘Seamlew She] tubes shall be
made from tested quality steel manufac-
tured by any a~oved
proceas and shall be fully killed. The sulphur
and phospho~ ~W~rements in steel shal] not e~eed 0.05
percent
each.
The welded tubes 8hall b ~a~actw~ from hot-rolled steel skelp/
strips co~rming to IS 1074.. ~~.’
(P*e7, &use GM):
a) Lfne3
- substitute ‘GM’ J.. ~GW.
b) LfJte4-
f
‘Gus or‘C-24’.
c) line
4- Whtitute “standardtube’~v ~~st pie=’.
( Page 7,
clause C-23, hue 1 ) - Substitute ‘tube& ~taatpiece’.
( Pago 7, clause -.1) :
a)&3
— Substitute ‘standard’@ ‘standard(s)’.
b) Une4— Substitute ‘defeot(s)’
fm‘defect’.
(
Page 7, clause (X.1, lfne 1 ) - Substitute ‘tube’ /or
tubing’.
(
Page 8,cfauseC&3, he S) – Substitute ‘off’f~ ‘of’.
‘pipe or
Printed atNew hdia printingPress, Khurja, India
AMENDMENT NO. 3 OCTOBER1993
TO
1S
1239 ( Pprt 1 ): 1990 MILD STEEL TUBES,
TtJBUL~RS
AND OTHER WROUGHT STEEL
tWITINGS
— SPECIFICATION
PART1 MILD STEEL TUBES
( Puge 1.
ckmse 6.1 )
— Add
a new paraqfterthisclause
‘Tubes may also bc manufactured from sheethtnp conforming 10IS 513:1988
C+ rolled lowcarbonsteel sheetandstrip.’
(Page2. chwe 10.2 )
— Suhstituwthe following for theexistingclause
‘Each tub shall be supplied with one socket. Socket sIN conform to 811
rcquimwcntsof IS 1239( Past2 ): 1992except clause&4.’
(Page
4. Table3, cof 6 ) –
Substitute‘10.W@
‘10.40’.
(MTD19)
Printed at New India Printing press, Khja, India
)
r
AMENDMENT NO. 4 DECEMBER. 1995
TO
1S 1239( Part 1 ) :1990 MILD STEEL TUBES,
TUBULJ4RS
AND OTHER WROUGHT STEEL
FI’ITINGS — SPECIFICATION
PART 1 MILDSTEEL TUBES
(Fijlh Revisioir)
( Page 1, clause 2.1) — Insert the following afler 2.1:
‘2.1.1 Latestversionof thestandardshouldbereferredto.’
(
Page 1, clause 6.1) —
Substitute ‘10748 :1995’ for ‘10748 :1984’ and
also wherever it occum in the standard.
[ Page 4, clause 14.1.l(a) ] — Substitute the following for the cxis[ing
Nominal Bore
Elongation Percen~ Min
a) Forsteam services for all sizes
20
( MTD 19)
Printed at New India Printing Press, Khurja, India
AMENDMENT NO. 5 FEBRUARY 1999
TO
IS 1239 (PART 1) :1990 MILO STEEL TUBES,
TUBULARS AND OTHER WROUGIiT STEEL FI’ITINGS
— SPECIFICATION
PART 1 MILD STEEL TUBES
( Fiflh Revkwn )
I Page 1, chmc 2.1 ( see also Arnencfrrmt No. 4 ) ] – Substitulc Ilrc
following for Ilk existing clause:
‘The Indian Standards listed in Annex B contain previsions which tbrougb
reference in this text, comtilule prvvision of this standard. At the time of
publication, the editions indicated were valid. All Iudian Standards are subject to
revision, and parties to agreements based on !his $tandnrd arc encouraged to
investigate the possibility of applying the most rcccnt editions of the Indian
Standards indicated in
Annex B.’
( Page 2, clause 10.1,
line 5 )-- Subslilulc ‘IS 554:1985’ for ‘IS 554:
1975~.
(Page 4, clause 14.1,
line 3 ) —
Subs!ihrte ‘IS 1608:1995’ @ ‘1S !994 :
1972’.
( Page 6, Annex B )-– Substitute the following matter for tbc existing:
isNo.
‘fide
228 Mctbods for chcmic~l analysis
of pig iron, ms! ~ion and plain
carbon and low alloy steels
513:1994
CMd rolled low cartxm steel sbecLs and strips (/orwt/I rewrkion)
$54:1985
Dimensions for pipe threads where pressure tight joints are
required on tbe threads (r/rird revision)
1239 (Part 2):
Mild steel tubes, tubulara and other wrought steel fitting.. :
1992
Part 2 Mild steel sockets tubular and other wrought steel pipe
fittings (@rfh
mtvkbn)
Amend No. S to 1S 1239 (Pan 1) :1990
lSNO.
1387:1993
1608:1995
2328:1983
2329:1985
4711:1974
4736:1986
4740:1979
8999:1979
10748: 19!?5
(MTD19)
Title
Geneml requirementsforthe supplyof tnctaiiurgiealmaterials
(Seeond revision)
Mechankai
testing of metals — mmsik testing ( second
revision )
h.iethodfor flattening test on mctaliic tubes (/Irst reviswn )
Method for bend test cmmetallic tubes ( in full section) (first
reviswn )
Methods [or sampiing of steel pipes, tubes and fittings (first
revision )
Hotdip zinc matings on mild steel tubes (Jlrst Jevision )
Code of practice for packaging of steel tubes (jh revision )
Gauging ptactice for pipe threads where prcsure tight joints
are required on the threads
Hot rolled steel strips for welded tubes and pipes ( Jrsl
revision )
Printed at New India Printing Press, Khurja, India
2