I
BDS ISO 693s-2 2006 "
Bangladesh Standard
Steel for the reinforcentent of concrete Part-Z: Ribbed bars
BAII{GLADESH STANDARDS AND TESTING II\STITUTION MAAI{ BHABAN 1
16-A, TEJGAON INDUSTRIAL AREA, DIIAKA-1 208, BANGLADI]SII
Pricc Tk. 100.00
July,2009
BDS ISO 6935-2:2006 BDS ISO 693-5-l: lL)05
0. F0Rt-_\\
ha.s
the statlrs of Bangladesh Standard.
oRI)
'fhis Bangladcsh standard was adopted by the Ilangladesh Standards and 'I'esting Instittttion on 24-0'/-2006 after the recommendation by the sectional committee for strttctttral steel bars,
0.1
sectiops and other products and had been endorsed in accordance with the decision taken by the
Ilngineering (Civil) Divisional Committee to adopt, without alteration ISO 6935-2: Ilangladcsh Stundard
l99l
as
.
Whercver the words "International Standard" appear ref'erring to this standard, they should be read
0.2
as "Bangladesh Standard."
0_i
l'hc standard
superseded the BDS
r!-infrrral-rTtL-nt
oi concrete
l313:
l99l:
Specification for steel bars and wires for the
.
t
I
i
(o
IIDS ISO 6935-2:
r\ll
rights reserved, lJnless otherwise specified no part of this publication may be reproduced or utilized in any forms or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher.
Itl)S ISO (1935-2:
20(t6
Ilangladcsh Standard Stcel for thc rcinf'or.cemcnt of concrctc P:rrt-2: Itibbcd bars -'tllnnrillec I'rlr structural slacl lrurs sr.cfinns rnrl nthnr nnrrrlrr,.t..
C'ltoirman
Representini
I:ngr. SM ShahidLrllah
Shahidullah and New Associatcs. Dhaka
,\tl ent
bers
l)r. Md ,\rrrrrul
I\krrnirr
l:n!,r. Mcl. Jalal (Jddin
Ilan-eladesh Industrial'l'echnicar Assistanceccnt.rc,Dlraka
Mr. Md. l{crvaz iiddin Sarkcr
Ilousing and building research lns[itr-rte, Dhaka.
Iingr. Md. Rafiqul Islam
Dircctorate of Public works. Dhaka
Mr. Kazi Anawar Ahmcd
Ilangladesh Steel Ilerolling Mills Ltd. Dhaka
Mr. Mrl. Arrarvlrtrl Azirn l:rrgr. Mt1. Lrlkrrrirrr Miir I
Ilangladcsh Steel Iinginccring Corporation,Dhaka
Mr. Md. Safiqur l{ahrnan
l)ircctor (Standard) Ii.r-O/licio member
I3
angladesh Itcrol I ing M i ll s Association. Dhaka
Ilangladesh Standards and 'l'esting Institution, Dhaka. Bangladesh Standards and I'esting Institution, Dhaka.
Ststt IVId. Khatilur Ilahrnan
I)cpLrty
I)ircdor (tinginecring)
Md. Saiclul tslarr ior llxam incr (l:n_qinecring)
Scn
&
llangladcsh Standards and 'l'csting Institution. Dhaka.
Bangladesh Standards and 1'csting [nstitution, Dhaka.
Sccrctary to t.hc Scctional Comrnittcc.
I}ANGLAI)ESIT STANDARDS AND M MAAN I}IIAI}AN 116.A, TE.IGAON INDUSTIUAL ARBA, DIIAKA-1208. I
Ill)S ISO (r()35-2:200(r Ilanglaclcsh Standarcl Stcel for the rcinfbrccment
/
i
Scopc.
f h1' pl11r. of'ISO 693-5 spccif ics tcchtiical rcclt"tirements for ribbeci bars dcsienecl lbr rclnli:rccrrrerrl r-rrdinarv collcrctc strLlcltLIrcs and fbr ttolt-prcsl,lessccl rcinforccrnent in prestrcssc6 cor1cl-cle slructurcs.
i,
l:trc s|aclcs ()l'stccl arc defincd. Of'thcsc. Itll 300. ItB 400 ancl RI] 500 should bc considcrcd as dilflculr Itr riclci, 'l'hc othcr tr'vo gradcs of'stccl. Itll 400W ancl l{ll -500W. arc rcaclily wclclccl by c.nvcnti..al *clding proccriurcs. 'llris part of'ISO
693-5 alrplics ttl htti-rollcrtl stccl without subscqucpt trcatnlcnt. to 5ot-rollcri stccl with ctrnt|ollcci cclolittg and tempcring and to cold-worked stcel.'l'lrc production pr
It also applics (o rcittlbrccr:rcnt supplicd in coil {orrn't'hc rcclr.rircnrcnt.s ol'this part thc straightcrrccl product. I{ibbcd bars prodttccd fl'oln l'inishcd products. such Iil'ting l'rooks arc also not inclucicd
as platcs anil
Lrsc as
2
of'lso
693.5 apply to
railway rails. arc cxcludcd. Srccl bars Iirr
Norrnative ref'ererrces
'l'hc {bllowing stiindards contaitt provisions which, thror-rgh refcrcncc in this text. cor.lstitute provisior-rs of this part ot- ISO 693-5. At the tirnc ol' pLrblrcation, the ;ditions indicated wcre valid. sr"rblcct to t'cvisiorl. itnd parties to agrccrncnts basccl on this part
A[[
sranciards arc
o{'ISo 693-5 arc cr.lcouraeccl to invcstigatc the'possibility of applying thc tnost t'cccnt cclitions o['thc stanclarcls indicatccl bclow. Mernbers ollliC ancl IS o mai ntai n re-q i srers ol- cr.r rrcntl y va l id Intcrnat ional Stanclards ISO
ii- -l:1989. .Sclcrlion ancl prepttrutiort of sample.s ctncl test pieces o.f' wrought steels lrttrt
.\urnpIt.s .irtr the dctennintrion of'rhe chamicctl ctnnpo.sirio,.
2;
ISo l0'1: 1981. .Slcc/ and steel pro(lucts General technical deliverl, reqLtire,nent.\. ISO 6892: 1984. Metattic muteriul.s
ISo
ISo .\t
10065:1990' Steel bars
for
-
T'ensile testing.
reinforu:ernent of concrete Bend ancl rebend te.sts.
10144"l,991' Certifir:tuion st:henre for r^teel bars and wires./
|
ru('lu re s.
2
rlDS rso 6935-2:
3
Dclinitions
Iror the purposes of this parr of ISo 693-5, the fo[owing definitions apply.
3.1
cast analysis: chernical analysis of a of the molten steel during casting
3-2 certification scheme: Certification system as related to specified products, processes or which the same particttlar standards and rules, and the same procedure, ipply. IISO/IEC Guicle2l 3.3
characteristic valuc: valuc having a prescribed probability of not bcing attaincd in a hypothet"ica
r,rnlimited lest series IISO 89301
NOTE I Equivalent to ii'actile. which is dcfincd
in
ISO 3534.
3"4
core: The part of
3.5
longitudinal rib: A uniform conrinuous rib parallel to the axis of the bar, before cold twisting
a
cross-section of the bar that contains neither longitudinal nor transverse ribs.
the case of cold-twisted bars.
3'6
nominal cross-sectional area: 'fhe cross sectional area equivalent to the area of a circular pl
bar of the nominal diameter.
3.7
pitch, p (for twisted bars only): 'l'he distance between two conseclrtive corresponding points of longitudinal rib on the samc gcncratrix.
3.8
product analysis: chemicat analysis of a sample from
3'9
rib height, a: The
a ribbed bar.
distance from the highest point on the rib (transverse or longitudilal) to
surface of the core, to be measured normal to the axis of
th. bur. (See figure 2).
3'10
rib spacing, c: 1'he distance between the centres of two consccutive transverse parallel to the axis of the.-bar. (See figure l.)
3.11 transverse
rib:
the bar.
protuberance at an angle, either perpendicular or oblique, to the longitudinal axis t
3'12 transvcrsal ribl-ess perimeter, )J/: The sum of the distances along the surface of the core betwe thc transverse ribs of adjacent rows measured as the projection on a planc pcrpendicular to the bar axis. 3'13
transverse rib inclination, B: The angle between the transverse rib and the longitudi.al axis of t
bar. (See figures t, 3,
4 and 5)
RI)S ISO 6935-2220(t(t
{. Dimensions,
masses and tolcranccs
Dimcnsions, masses aud toleranccs arc given in tablc l.
l'ablc I
-
f)imensiotts, masscs and tolerances Mass per lenglh
Nominal bar diametcrl) mm
Nominal cross-scctional area
mm'
Requirement kg/m
6
28,3
0,222
+8
8
50.3
0,395
+8
l0
78.3
0,6t7
+5
t2
ll3
0,888
r5
l6
20t
1,58
+5
20
314
2.47
t5
Permissible dcviation2 o/o
?5
x4
't_
+4
+0
+4
r)
than 40 mm arc required. the size increase should be in incrcments deviation on such biirs is !4 c/o. mm. Permissible of 5
2)
Permissible deviation refers to a single bar
If diarneters larger
and purchaser. Prcfcrred standard lengths of
I)elivcry length should bc agrced between
O mm.
straight bars are [ 2 m or I 8 m. Permissible deviati
'lhe geometry of ribs shall cnsure that the bars have adequate bond properties to fulfill their fr-rnction in concrete structurcs.
'l'he bond propertics are adequate if therc are at least two rows of transverse ribs equally distributed around thc perimeter. 'l'he transverse ribs within cach row shall bc distributcd uniformly ovcr thc cntire lcngth of the bar, except in tho arca of marking. Requircments for rib geornetry are given in table 2.
4
Bl)S ISO 6935-2:2(t0(t
'fable I)iamcter D mm I
lcight of tlansverse ribs, a Minimum I Icight of Iongitudinal ribs. c'Minimunr
fring. t Minirnurn 'affi tnaximuur 'l'ransversc rib inclination. 19 Minimum
Ritr
'['ransvcrsal riblcss pcrirncter I/7 MaximLrm Nonrinal pitch. l,
Ali
2
-
Req
s
for rib gcolnctrv
IIot-rollcd bar Ribs of
'frvisted bar Crcsccnt-shapcd ribs
(--resccnt
unifonn heisht
sl
npcd ribsd 0.065 D
0,05 1)
0.052
AII
6ro8
n
0.0(r-5 1l
r)
0,07
>10
0,5 D to 0.7 D 0.5 D to 0.7 I)
;\ll
3"5'
0
iDto I.0D
0 '] D ro 0.8
All Ail
I)
0.-5
I) ro I.0 D
0.5 D to t.2 t) 0.5 D to 1.0 D
0.5 D to 0,8 D
35"
3-5'
0,25 I)
0.35 r)
t0t)
+ 2t)
Dimensions defining the rib geometry in table 2 are shown in figures 1 to 5.
Longitudinal rib
Figure 1 - Ribbed bar - Definitions of geometry
3 - Example of non-twisted bar with varying rib inclinations to the longitudinal axis
Figure 2 - Rib flank inclination, cr and rib height, a - Section A-A from figure 1
of non-twisted bar with of uniform height (F=90o)
i :l I
i {I x
5
i
BDS ISO 6935-2:2006
'Iable 3 Si:.'! grrde
-
Chemical composition
-
CI,
Si
Mn
values in percentage by mass
RB -1{-tr RB J{r.] RU 5UI
7
'RR -100\\' RII .i(m\\'
1
l,or RB -100W and
i
.\
.
0,60 (0.6s)
0.22
(0.24)r'
(
r,60 r,70)
Nl)
P
S
0,060 (0,070)
0.060 (0.070)
0.050
0,050 (0,055)
(0.0ss)
0,012 (0,013)
1)"0'
)
0,50
(0,52)
-500W with diameters largcr than 32 mm. the maximum carbon contcnt c/c) , C r rs 0.1-5 7c (0.21 and thc maximum carbon eqLrivalent (C"n) is 0.5:: c/: !0:7 Ea\
RII
hrghcr nitrogcn conte nt may be used
if sufllcient quantities -oTiritrogcn-binding clctncnts
arc
P{-c\ant.
I hr r alucs in brackets appty for the product analysis. b,
t {
::'/4?I f-'l-'G
5
-
T-isrrd
hr
with oblique ritx
Rn ir.r:rtg rhall be taken as the
6
mcan value rncasured along one pitch.
Chemical composition
The stcel shalI not contain quantities of the given elemcnls hiqher than those specified in table 3.
'[he carbon eqr.rivalent C"n. is calculated according to thc formula (-
' -(-
t
Mn r 6 -
(Cr +V + Mo)
5
, (Cu + Ni) 15
uhcre C. \{n. Cr. V. Mo. Cu and Ni are percentages by rnass of the respective elements of the steel.
7
Nlcchanicalpropcrties
7.1
-
Tcnsilc propcrtics
I{equired tensile properties for the various steel grades are given in tablc 4. .At lcast 95 Vc of the populatiou under considcration shall have tensilc properties equal to or above the t charactcristic valucs specifi ed.
:
Br)s IS() 6935-2:
'Iablc 4 -Charactcristic valucs {',r uppcr yield strcss, tensile strength and pcrcentage clongatiorr altcr lracturc
Stecl
Uppcr yicld strcss
'fensilc strcngth
ll"Il
Illongation
R.
A..u.
N/mm2
N/mrn2
Vc
300
330
16
400
440
t4
grade
I{U 300 RII 400 RB
4oow l
Rll 500 RB
)
--Fg#&-
r
500
-5oow I
550
t4
may
ruo
significant
used as guarantced
to dcfine the yield
1
BDS ISO 6935-2:2006
8.3
Rebend test
'fhe rebend test shall be carried out according to ISO of the diameter specified in table 6.
7
shall be bent over a mandrel
test
'l'he anglc of bend before heating (ageing) shall be 90' and the angle of rebend shall be 20". Both angles shall be measured before unloading.
Table 5
-
Mandrel diameter to be uscd for the bend test Dimensions in millimeters
l6
z0
25
32
40
Nominal diameter') of bar
6
8
10
t2
Steel grade RII 300
t2.5
l6
20
32
50
63
100
t25
160
l6
2A
25
40
63
80
r25
160
200
20
25
32
50
80
r00
160
200
250
RB
4OO
RB 400W RB 5OO RB 500W
l) For nominal diameters larger than 40 mm, the mandrel diameter in bend tests shall be agreed between manufacturer and purchaser. Table 6 - I\{andrel Diameter to be used for the rebend test ml
Nominal diameter
6
8
10
12
t6
20
25
32
40
32
40
50
63
100
r60
200
320
400
of bar Steel grade
RII400 RB 400W
RB 5OO RB 500W
9.
Designation
Ribbed bars according to this part of rSO 6935 shall be designated in the followinr
-
reinforcing steel;
-
the number of this part of ISO 6935 (ISO 6935-2);
--- nominal diameter, in millimeters, according
-
to Table I
steel grade,
Example: Reinforcing steelISO 6935-2
- l6 RB 500W 8
i
C
"der:
BDS ISO 6935-2:2006 10.
Marking
10.1
:r. number of this part of' related to test rccord and r!
1l
':.
in
accordance with
tt.2 Provisions regarding the
of rcinforcing
steel not subject to a certi
11.3 Verification
ll.3.l
of characteristic values
Organization
'lhe tests shall be organized and carried
ng to an agreement between purchascr and of the receiving country.
our
manufacturer, taking into consideration the national
11.3.2 Extent of sampling and testing a fraction rnere there
of each test unit shall ot shali consist of products of the same steer g 'r 'ac*on diameter from the same cast. The manufacturer shail confirm in the rest reporr unit originals from the same cast. The chemicar composition (cast anatysis)
9
BDS ISO 6935-2:2006
a)
b)
fifteen test picces (ifappropriate 60 test pieces; see 11.3.3.1) from various bars for testing all other properties specified in this part of ISO 6935.
I1.3.3
Flvaluation of tlrc rcsults
11.3.3.1 Inspcction by variables Iror properties which are spccified as characteristic values. the following shall be determincd:
a) all individual
values x;, of the l5 test pleces (n
-
l5)
b) the mean value, m:i (for n = l5)
c)
the standard deviation.
s1-5
(for
r = l5).
'l'hc test unit corrcsponds to the requircments if the condition staled below is fulfilled for all propcrties: rn15 - 2,33 x sr:, Ji whcre
fl
is the required characteristic value:
I. for n = I
l-
15 for a failurc ratc of 5 7c (p= 0.95) at a probability of 90 cr = 0.90).
c/c
If the condirion srated above is not fulfilled, the index , tn,._.f^ .Tt.
is detcrmined from the test rcsults available. Where k'> 2, testing can be continued. In this case 45 further tcst pieces shall bc taken and testcd fiom different bars in the test unit. so that a total of 60 test results are
available (n
=
60).
'Ihe test unit shall be considered to comply for all properties: m6s
-
if the condition srated below is fulfilled
1,93 x S6e> f1
whcre 1,93 is the value for the acceptability index, probability of 90 o/o (l - a = 0.90).
t,
10
I
T
for
r=
60 for a failure rate of 5 % (p = 0,95) at
a
l"
BDS ISO 6935.2:
11.3.3.2 Inspection by attributes When testing properties specified as maximum pieces shall comply with the requirements of considered to comply with the requirements.
values, all results determined on the l5 tcst of ISO 6935" In rhis case rhe resr unir shall be
The tests may be continued when at most 2 further test pieces from various bars in the lest available. The test unit complies with the requi
not conforming to conditions occur In this case 45 shall be tested, so that a total of 60 test results are if at rnost 2 of the 60 results do not conform to the
conditions.
11.3.3.3 Chemical composition Iloth test pieces shall comply with the
ll,4
Verification of guaranteed minimum values Tests shall be carried
out according
to
Bars of the same cast
y 50 t or fraction thereof. one tensilc
and one bend/rebind test shall be canied out tar each bar diameter.
Each individual test result shall meet the required values bending/rebinding properties in
j.Z
in
table
4
and the rcquired
and7.3.
One cast analysis shall be carried out for every cast to verify chemical composition (clause 6). Samples shall be taken in accordance with ISO 377_2.
If any test result does not meet the requirements, ISO 404.
The manufacturer shall submit a
of the delivery
test
chemical and mechanical properties
in clauses 6 and7, and a confirmation that the other
requirements of this part of ISO 6935 are
12 Test report The test report shall contain the following
a)
satisfy rhe
designation of the reinforcing steel according
c) date of testing;
d) mass of the lest unit; e) test results.
ll
Bt)s
Iso
6935-2;2006
(r 'Iwo multinational systems for
A.l
of ribbed bars
Rcferences
Iluronorm 80-85, Reinforcing steel (not for pre-stressing)
ASI'M A 6 l-5 M-88 , Deformed
anrl plain billet-steel
T'ec hn ir:
con
c
ttl
cle
liv
e
ry c ondi
ti
on s.
rel e reinJbrc emen t ( mel ri c: ).
CSA G30.l2-M1917. Uilter sreel barsfor concrete
L.2
Ilxample No.
1
System according to EURONORM 80-85
L.2.1
Marking of thc steel grade
'l'hc stcel grade shall be recognizable as follows from
features (arrangement of thc
oblique ribs).
4.2.1.1 Steel grade RB .100W is indicated by means of oblique ribs are at different intervals on each half of the c 400 reinforcing steel is marked by twisted longi ribs on each half of the circumference.
opposed rows of parallel obliquc ribs. 'l'hc mference (see figure A.l). Cotd-twisred RB with the same interval between the oblique
L.2.1.2 Steel grade RB _500W is indicatcd bv means of parallcl obliquc ribs and the other of ribs with alternating (see figurc A.2). Cold-twisted RII 500W rcinforcing stee
rows of obliquc ribs, one row consisting of of inclination towards the axis of the bar indicated by additional twisted longitudinal
ribs.
4.2.2 Marking of the country
and producing works
i.2.2.1The counrry in which the steel was produced, arrangement of normal oblique ribs between thickened 4.2.2.2 fhe symbol denoring the starr of reading of
the producer, is indicated by means of an ribs (see figures A.l and A.2). the
normal oblique rib between two thickened ones (see figurt L.2.2.3 'l'he country of origin marking is shown in rable A
t2
.l
ion and its direction consists of one and A.2).
BDS ISO 6935-2:2006
Tablc
A.l
-
Nlarking
country of origin Numbcr
ut'il;rufiEfiqu"
Gcnnany I
Ilclgium, Nethcrlands. I_uxcmburg
2
I;-rance 3
Italy
4
UK. Irclancl
5
I)crrmark, Srvcdcn, 6
Norway, I;inland Spain, Porrugal 7
Grcccc.'l'urkcy, Czcchoslovakia
8
L.2.2.4 Accorcling ro an index to be individually
for each country the mark for the stecl producer
conl.ains:
a)
a grolrp of normal oblique ribs (at least two):
b) scveral groups of normal oblique ribs (once again normal ribs in the last group being at lcasitwo.
iJ
I
BDS
ISo 6935-2:2006
Dircction of reading
I L-aJ
--V-/
Start
Gountry No- l
Figure A.1
_
Works No. 8
Marking of reinforcing steel RB 400 (not cold-twisted)
Direction of rcading
Start
Figure A.2
Country No.4
Works No. 8
_ Marking of reinforcing steel RB 500W (not cold-twisted)
A.3
Ilxample No. 2
System according to ASTM A 615 M-88
A.3.1 When loading for mitl shipment, bars shall be properly separated and lagged with thc manufacturer's cast or Lest identification numbcr. A.3.2llach producer shall identify thc his marking systcm. A.3.3
All
bars shall be identificd by a distinguishing sct of marks legibly rolled into the surface of onc
side of the bar to denote, in the following order:
4.3.3.1 Point of origin I-ctter or symbol established as the producer's mill dcsignation
A.3.3.2 Sizc designation Arabic numeral conesponding to bar designation number (nominal diarneter)
4.3.3.3 'l'ypc of stcel Irtter S, if the bar is produced
according to the specification in AS'IM
produced according to CSA G30.12-M1977
t4
A 615 M. No mark, if the bar is
BDs ISO 6935-2"2006
yield designation 4.3.3.4 Mininrum
nl
400' eithcr the'rrur1-b;f r;or stccr gradc RB of[sct lrom at lcast fivc spaccs
i;: ,;;";n
iJl.S.i[;ifi:ttf:fi]
or a si ngit' conli (No marking dcstgtlalt
300 bars)
Direction o{ reading
--
Accirdoing to ASTM
Bar
Works
size
sYmbol
Steel
grade
according to ASTM Marking A'3 Figure Annex
A 615
M-88.
Il
(informativc) and supplier bctwccn purchascr agrccmcrrt for Optiorrs
n ic
ncc. thc
r:or c onvc bc quircnrcnts can agrectn( on re striction
0,"]' :'^:::^::l
#:*]!i :lf, :iJi3' i?3 :LtT:i:;lHst
i9i:::;:;ruing
'
?,
'o,t
"'
provisions'
(tablcs I and 5)' I)iantctcr > 40 mni (clause 4)' DcliverY lcngth ribs (clatrsc 5t'
l.orrgittrdinal
-', Guaranre.d nll:l*111
:ly:l tf
and 1 l '4)'
(7 3)
- Rcbending ProPertiets . Iiatigr-re Properties (7'4)' -
delivery testing Organization of
(l I
3'
l)'
15
lT::
: : ::
H'T'T;
BDS ISO 6935-2 :2006
INTERNATIONAI,SYSTEMOI'UNITS(SIUNITS) Ilase Units
Synt!p!
Namc of Units
QuantitY I-ength Mass
Metre
m
kilogram
kg
Time
second
Electric cLtrrt:nt ThermodYnamic temPerature Amount of substance
ampere
lLr.,,rinom intensitY
candela
S
A K
Kelvin
rnol cd
mole
Supplementarl' Units
Q"e!tily Plane angel Solid angle
Name of Units
sr'rylgl
radian
rad ST
steradian
Derived Units With SPccical Name Quantity IrrequencY Force Pressure and stress Work, energy, QuantitY of heat
Power Quantity of electricitY Electric potential, electromotive froce L:lectric caPacitance tllectric resistance
Name of units
Symbol
hertz
Hz
newton
N
pascla
Pa
Joule
J
'
watt coulomb
C
volt farad
ohm
Illectric conductance Magnetic flux Magnetic flux densitY Luminous flux
w
Siemens weber tesla lumen
F
o S
wb T lm
Expression in terms o[ other units
Hz = lN = Ipa = lj = lW = lC = lV = Iir = te = lS = lryb = i'l' = llrn =
I
lc-s
lkg.m/sr lNlm: 1N.m
lJ/s
lA.s lWlA lA.s/V
lVlA lA/V lV.s tWbirrr lcd.sr
OC
Celsius temperature
Some Other Dcrived Units Squarc metre Cubic metre
iry (Liquid)
litre
TESTING INSTITUTION BANGLADESH STANDARDS AND MAAN BHABAN AREA' DIIAKA-I208 116-A, TE.IGAON INDUSTRIAL
I]ANGI,ADESH
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