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ASBESTOS CEMENT PRESSURE PIPES SPECIFICATION ( Third Revisioul )
First Reprint SEPTEMBER 1991
UDC 621’643:2-98 [ 666’91 ] : 628-143
0 BIS BUREAU
SHAH. ZAFAR NEW DELHI 110002
In this revision. Addition of ground silica or pozzolana to replace ordinary Portland cement in the manufacture been permitted in this specification in the case of autoclaved pipes. due weightage has been given to international co-ordination among the standards and practices prevailing in different countries in addition to relating it to the practices in the field in this country. has
This standard covers all requirements of asbestos cement presssure pipes manufactured in the sountry for local consumption as well as for export. dimensions for pipes of diameter 700 to 1 000 mm and two new classes of pipes. detailed dimensions for pipes of class 20 and 25 were included. Asbestos cement pressure pipes are being used in this country for more than 50 years derable experience is available in regard to their use. rounded off in The number of of the specified
. shall be accordance with IS 2 : 1960 ‘Rules for rounding off numerical values ( revised )‘. after the draft finalized by the Cement and Concrete Sectional Committee had been approved by the Civil Engineering Division Council. 10 and 15 ) of diameter 80 to 200 mm only were given. standard dimensions for three classes of pipes ( Class 5. Necessary guidance regarding the sL!ection of asbestos cement pressure pipes may be obtained from Indian Standard ‘Guidelines for selection of asbestos cement pipes subject to external loads with or without internal pressure ( under preparation )‘. that is. Class 5 TP and Class 10 TP for diameter 700 to 1000 mm have been included. In the first revision. observed or calculated. The Sectional Committee decided to revise the standard further in the light of experience gained in its use. and consifor water
This standard was originally published in 1960 and subsequently revised in 1970 and 1980.
FOREWORD This Indian Standard ( Third Revision ) was adopted by the Bureau of Indian Standards on 11 May 1989. complied with. in addition to covering pipes of diameter 80 to 600 mm for all the five classes of pipes. In the formulation of this standard. significant places retained in the rounded off value should be the same as that value in this standard. over ground and underground. For the purpose of deciding whether a particular requirement of this standard is the final value. expressing the result off a test.Cement and Concrete
Sectional Committee. In the second revision. supply pressure mains.
onform to IS 1344 : 1981 or IS 3812 : 1981.2. and acceptance criteria for pressure pipes of Class 5.1 Composition Asbestos cement pressure pipes shall be made from a thorough and homogeneous mixture of ordinary Portland cement conforming to IS 269 : 1976.
1 Class 5 TP and 10 TP pipes
1 Addition of ground silica or pozzolana ( up to a maximum of 40 percent by mass ) to replace ordiaarv Portland cement is nermissible in case of autoclaved pipes.1 Hydraulic Bursting Stress The unit bursting stress arrived at from hydraulic bursting test ( see 7. 20. classification. 25.
are recommended for’use where the pipeline is not subjected to any external load other than a nor’mal backfill load of maximum l-25 m. this test requirement shall be satisfied only in ca8a of pipes of diameter 150 mm and less. hydraulic test pressure.2 The relationship between the bursting pressure ( BP ) and the works hydraulic test pressure ( TP ) and the relationship between the bursting pressure ( BP ) and the normal hydraulic working pressure ( WP ) shall be not less than the values given in Table 2. rapid hardening Portland cement conformslag cement ing to IS 8041 : 1978. 3. 12.6. The nominal diameter of the pipes corresponds to the internal diameter ( bore ).
3. Such classes of pipes shall be manufactured only for nominal diameter 700 mm and above. In such cases. 2 Pipes of Class 6. This test may be conducted with mutual agreement between the purchaser and the manufacturer. Pozzolana used shall c. 5.2. DIMENSIONS AND TOLERANCES
5. Portland conforming to IS 455 : 1976 or Portland pozzolana cement conforming to IS 1489 : 1976 and asbestos fibre.1 ).1.2 The classification given in Table 1 is based on the works .5 0’5 1-O ( TP )
5 f: 20 25 5TP 10 TP NOTES
-.3 ) shall be not less than 24’5 N/mm”.3 Longitudinal Bending Stress The unit longitudinal bending stress arrived at from longitudinal bending test ( see 7. 1. taking note of the conditions of laying and operation of the.
.0 1’5 2-o 2. 4. 5 TP
4. 1. 3 MATERIAL 3. 3.1 Nominal Diameter 5.1 The pipes shall be classified with
the works hydraulic Table 1. 4. However.1 Size designation of pipes shall be according to their nominal diameters.2 Physical Properties 3.2. tests asbestos cement 15.5 1.3 ) shall not be less than 44 N/mm2.1 The Indian Standards listed in Annex necessary adjuncts to this standard.1 The purchaser shall decide on the class of pipe to be used and other conditions of operation.IS 1592:1989
Indian Standtird ASBESTOS CEMENT PRESSURE PIPES SPECIFICATION ( Third Revision )
covers the manufacture. 2 REFERENCES 2.2. tolerances not being taken into account. detailed dimensions shall be arrived at between the supplier and the purchaser. 10. 18 and 24 corresponding to works hydraulic test pressure of 0.2.3 ) shall be not less than 20 N/mm2 for sizes up to and including 300 mm dia and 22 N/mm’ for sizes 350 mm dia and above. and 10 TP (see 4. The hydraulic working pressure shall normally be not more than (a) 50 percent of the pressure defining the class of pipes for diameter up to 500 mm.
4.pipes.2 Transverse Crushing Stress The unit transverse crushing stress arriped at from transverse crushing test ( see 7.2.
respect to as given in
Table 1 Classification of Asbestos Cement Pressure Pipes Class
Works Hydraulic Test Pressure MPa 0. found technically suitable for the manufacture and performance of pipes (up to a maximum of 5 percent by mass ) is permissible. inorganic and/or organic.8 and 2’4 MPa respectively may also be manufactured.1This standard
requirements for dimensions.
1. and (b) 60 percent for dia 600 mm and above.
2 Addition of fibres other than asbestos.
3 The thickness shall be measured near the jointing surface of the pipe ends.2’0 .2.Plus tolerance shall be free.2.3. None of the six measured diametti shall be smaller than that allowed by the application of the above formula.
*Non-preferred size. of a material una&cW by water which shall pass freely in the pipe.3’5 Over 60 up to and including 90 Over 90 .Memal diameter of pipes of diameter less than or equal to 500 mm shall be checked by means C& a sphere or a disc.1.20 for diameters less than or equal to 300 mm and f: .3 Nomioal Length The nominal length of pipes for all diameters shall be 3. The nominal length shall ‘preferably be a multiple of 0’5 m ( see also 10.
Nominal Diameter mm (1) 80 and 100 125 to 2C0 250 to 500
6!lOt01000
BP/TP (2) 2 1.1.). The thickness at any point along the barrel of the pipe shall be not less than that obtained by the application of tolerances given in 5.IS
15!32:1!989 Table 2 Relationship Between Bursting Pressure ( BP .2’5 Over 20 up to and including 30 Over 30 up to and including 60 .1 The deviation’ in straightness determined by straightness test for pipes in accordance with IS 5913 : 1939 shall not exceed the following: Nominal Diameter mm SO to 150 200 to 400 450 to 1000 Maximum Deviation mm .2 The nominal shall be as follows: 200 80 250 E 150
of pipes in mm 700 750* 900 1000
% 500 600
NOTE-Pipes of nominal diameter larger than 1000 mm may also be manufactured.1 The nominal thicknesses of different classes and diameters of pipes shall be in accordance with Tables 3 and 4.1 Tolerances on external end
Tolerances on the external diameter from ends shall be as follows: Nominal Diameter mm 80 to 300 350 to 500 600 to 700 750tdlOoO
5.2 The aggregate length of pipes supplied shall be not less than the aggregate nominal length ordered and shall include the complete requirements of joints for the ordered length if the joints ( see 8 ) are ordered for.4’0
NOTE . three diameters at an angle of about 60” between them with an accuracy off 1 mm.2 to the nominal thickness ( see also Note 2 under Table 3 >.3. 5. mm for nominal diameters greater than 300 mm. 5. measurement shall be made on the pieces obtained from hydraulic bursting test and transverse crushing test.5
5.: I 4’5 I 5’5 I 3’0 I 4’0 I
NOTE .1.4 Straightness ( Optional Test ) on the length
Tolewwes $6 f 0’8 Et
BP/WP (3) 4 3.:. 5.4.2 Tolerances on rhe Thickness of the Wall The tolerance on thickness shall be as follows ( see also Note 2 under Table 3 ): Nominal Thickness Tolerance (mm) (mm) . 5.3. the regularity of the . diameter of pipe in mm.3
Tolerances on the Diameter diameter at pipe
51. The diameter df the sphere or the disc shall be less than the nominal internal diameter of the pipe by the following: 2’5 + 0’01 d where d = nominal
If required.2 Thickness 5.2 ). Works Hydraulic Test Pressure ( TP ) and the Normal Hydraulic Working Pressure ( WP ) ( Clause 4.2.
the regularity of internal diameter of pipes of diameter greater than 500 mm shall be checked by measuring at each end of the pipe. detailed dimensions may be arrived at between the supplier and the purchaser. shorter pipes may be specified.2.1.75
. The disc shall be kept perpendicular to the axis of the pipe.3.3’0 .5 3’0 2..2 ) 5. Tolerances on the Nominal Length The tolerance shall be + 6~ mm .1’5 Up to and including 10 Over 10 up to and including 20 .2 Regularity of internal diame&r ( optional test ) If required.1. f 5’5 I 6. 4 or 5 m.1 is the length of the pipe in metres. In special cases. in such case. 5.
5. For the purpose of measuring thickness at any point.
2 For nominal diameters 700 to 1000 mm for classes 5 to 25.3 in accordance with.0 17’5 32. external diameter may not be equal to internal diameter plus twice the thickness in all cases.0 39.method described in IS 5913 : 1989.5
y---A External TkickDiameter ness (4) (5) mm mm 99.2 Works Hydraulic Pressure Tightness Test
The pipes shall show no fissure.0 50-o 54-o 57.5 904 31.2.0
NOTES 1 External diameters at finished ends of the pipes specified in the table are already in practical use and are Due to inherent characteristics of the manufacturing specified for the purpose &’ interchangeability.2 The composition of asbestos cement couplings shall conform to 3.IS
1592 : 1989
Table 3 Classification and Dimensions of Asbestos Cement Pressure Pipes (Clauses 5.3 and 5.’ ’ 6 FINISH 6.5 58-O 710.
r---L-_ Tkickness (3) mm 9.5 824.5 39-o 46.5 294. 5.5 145.2 The shape of the finished ends should be fixed by the manufacturer to suit the type of joint used.5 183.5 643. 5. ( l I 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 g2.5 882 0 910.5 761-O 813.2.5 9.5 744 26.0 448-O 26’5 498’0 29.0 35.0 27.5 171.5 1000-O 1 024.5 23’5 761-O 33-o 813’0 34.5 9-S 120.0 42.0 340.0 35.0 68.0 851 29. the barrel thickness shall be not less than the The same may be verified from bursting test pieces.5 17.5 26’0 28-O 29.5 22. leakage or sweating on the outside surface when tested in accordance with the method described in IS 5913 : 1989 to the works hydraulic test pressure given in Table 1.5 328.0 769.5 9.“5.0 1 082.5 14-o 16.5 9.5 48.
.1 The works hydraulic pressure tightness test shall be performed on all the pipes ( compulsory test ).5 352.5 23.1 Two types of joints are normally provided with asbestos cement pressure pipes and they are :
Asbestos cement couplings sealing rings.25 m.5 21-o 392’0 24.0 4199 463. (4) 24.5 305.0 23.h-~--~ External Thickness Dia .
Table 4 Classification and Dimensions of Asbestos Cement Pressure Pipes ( Clauses 5.
5.5 The dimensions of asbestos cement pressure pipes of different classification as given in 4 and different nominal diameters as given in 5.0 973.0 9.0 13.5 253.5 19.0 9’5 221.0 34.0 322’5 14. and
iron detachable joints with rubber sealing rings and bolts and nuts.0 91.0 37-o 973-o 39.5 379.0 1 177.2.5 19.1.5 16’0 17.5 159.0 21’0 191-o 242. should be
Class 20 Class 25 h----\r-_-A-__ External ’ External Thick Diameter ness Diameter (11) (lb) ( 12 1 mm mm mm 101.5 643.0 12.0 82-O 1 059-o 1 138.0 665. Dia mm (1) : 3 (2) :%!I 800 Class 5 TP c___*_--~ Thickness External Dia mm p3”.5 28.5 938 34’5 1 064 Class 10 TP C-----.5 14.1 and 5.2.5 9. 7.5 432 0 482’0 536.0 919.5 366.5 20.5 591.5 233.0 43’5
Clms 10
External Diameter (6) mm 99-5 120.0 145.1 shall be as given in Tables 3 and 4.5 17.
6.2.0 379.0 39.1 to 3.5 880-O 45-o 935.2. 3
8.5 16.1 All internal surfaces of the pipes regular and smooth.0 121-o 11-o 147.0 532-O 572.5 990-o 53-o 1 101-O
r--Thickness (9) mm 11-o 13. thickness mentioned above.5 )
Sl Nom No.0 47.’ 80 100 125 150 200 250 300 356 400 450 500 600 700 750 800 850 900 1000
g.5 27.0 276. 8 JOINTS
:: Go’ 6 1000
NOTE .0 171-o 225.0 5545 35.5 33.0 35’0 37.0 1 082.5 37. 24.1 and the cast iron detachable joints shall conform to IS 8794 : 1978. process and common moulds for all classes.0 73-o 941’0 967-O 77.0 64.0 797 28.0 284.5 31. 744 797 851 904 958 1 064
7 TESTS 7.5 686.Class 5 TP and 10 TP pipes are recommended for use where the pipeline is not subjected to any external load other than a normal backfill load of maximum 1.0
Class 15 ---y c-External ThickDiameter ness (7) (8) mm mm 9-s 995 10.5 405’0 35.5 14-5 432.0 16-o 482 0 17-5 536.5 61.0 865-O 919.3 Test shall be conducted to check the physical properties mentioned in 3.5 34’5 (“8.0 176.5 9.5 795’0 64-o 823-O 853.5 9.5 71.0 865. 7.0 9.2.5) SI
No.0 11’5 271.5 13’5 106’5 126-5 I 6’5 132’5 152.0 43.0 39-5 478-O 515-o 44.
2.2.2 Inspection by Sampling 10. If the pipes are to be used for conveying drinking water. 10. Dimensions and Tolerances
The finish ( see 6).1.4 ) may be verified on each item of the consignment. In this case. respectively meters from 125 to 250 mm. 8. inspection and acceptance shall be in accordance with IS 7639 : 1975.4 The dimensions of . Marking.2 Leligth Delivery Tolerances At least 90 percent of the pipes supplied should be of the nominal length ( subject to the tolerances given in 5. c) Nominal diameter. 13 MARKING 13.2 ). and c) 200 and 100 pipes. meters of 300 mm and above. 11 MANUFACTURER’S CERTIFICATE 11. the samples shall be taken before or immediately after delivery at the option of the purchaser or his representative and the tests shall be carried out in accordance with this standard on the written instruction of the purchaser or his representative. In order to reduce the duration and the cost of the acceptance operations in practice.1. a) 800 and 200 pipes. 9 INDEPENDENT TESTING by the manufacturer on all the pipes ( see 7.2 should be carried out
.3. 14 SAFETY RULES SHEET 14. the manufacturer may ask for 100 percent inspection on all items of the consignment with regard to the failing characteristics. if he so desires.3 shall be conducted on samples of pressure pipes selected as in 12.1 ) as a part of the manufacturing programme. The required number of additional joints because of supply of short length pipes.1.1 The manufacturer shall satisfy himself that the pipes conform to the requirements of this standard and.2&f the pipes on which they are to be used when the pipes are set at the maximum permissible angular deviation indicated by the manufacturer.1 The number of joints which are to be tested shall be as agreed to between the purchaserand manufacturer subject to 12.1 All delivery of asbestos cement pipes shall be accompanied by a safety rules sheet as given in IS 11769 ( P+rt 1 ) : 1987. the marking (see 13 ).1Finish.1 Each pipe shall be legibly and indelibly marked with the folIowing information: a) Manufacturer’s name any.3 The works hydraulic pressure tightness test in accordance with 7. Each inspection lot should include only items of the same diameter and of the same class. 10.3. 10.1). he may.3 Rubber rings used‘in jointing shall comply with the requirements of IS 5382 : 1985. at the purchaser’s request.2. b) Date of manufacture.2.1 The sampling. The remainder may be shorter by not more than 1 m in case of pipes of 3 m nominal length and by not more than 2 m in c&e ofspipes of 4 and 5 m nominal length. b) 400 and 100 pipes. the rings shall not affect the quality of water. the maximum and minimum inspection lots shall be as follows: . if the inspection results tend toward the rejection of the lot.1 Inspection of Each Item of Consignment 10. clearly stating the class and the diameter of the pipe.5 The assembled joints shall be flexible and capable of withstanding the specified hydraulic pressure (see 4. 8. if for diafor for diadia-
9. which the manufacturer carried out on all pipes as given in 10.2 If the purchaser does not witness the hydraulic pressure tightness test.1 and 7.5. 12 SAMPLING FOR ACCEPTANCE 12. be replaced by an inspection by sampling. -4 or trade-mark. respectively . if required. 10 CRITERIA
10. shall be supplied by the manufacturer without any extra cost. the dimensions and the tolerance on pipes and joints ( see 5 and 8. 8. ask for additional hydraulic pressure tightness test ( see 7.1.is1592: 1989
8. and e) Pictorial warning sign as given in IS 12081 ( Part 2 ) : 1987. respectively meters up to 100 mm. tolerances on the internal diameter shall be as agreed to with the manufacturer taking into account the tolerances on the rings and pipes.1. 10. Unless otherwise agreed to between the manufacturer and the purchaser. for checking purposes and after giving notice. The purchaser.2 ) on only samples of pipes selected as given in 12.asbestos cement couplThe ings shall be as given by the manufacturer. d) Class of pipe.1 to 3. may be present or depute a representative to be present while the tests are being carried out ( see also 10.1 The tests indicated in 3. shall furnish a certificate to this effect to the purchaser or his representative.2.1 If the purchaser or his repre$entative requires independent tests. the inspection of characteristics made on each item of the consignment may.4The pipes which do not satisfy the above requirements shall be rejected 10.
IS Title REFERRED
IS No. water mains sewers ( first revision )
for pictorial warning signs and pre-~ cautionary notices for asbestos and products coutaining asbestos: Part 2 Asbestos and its products
.Gon )
Ca\t iron
( second revision j
Poftland-pozzolana ( second revision j
detachable joints for ux with avbcstos cemen8 pressure pipes
IS 3812 : 1981
Fly ash for use as pozzolana and admixture ( first revision )
IS 11769 ( Part 1 ) : Guidelines for safe use of 1987 products containing asbestos : Part 1 Asbestos cement products IS 12081 (I$t72)
5913 : 1989
Methods of test for asbestos cement products ( first revision )
Rubber sealing rings for gas and mains.1 ) LISTOF
Method5 of
269 : 1976 455 : 1976 1344 : 1981 1489 : 1976
Ordinary and low heat Portland cement ( third revision ) Portland Calcined slag cement clay pozzolana cement
IS 7639 : 1975 IS x041 : 197X
19 8794 : 197%
ii\be\t(>% cemcnl products
Rapid hardening Portland cement ( firsf revi.IS 1592 : fW
ANNEX A ( Clause 2.
products covered by an Indian Standard conveys the assurance that they have been produced to comply with the requirements of that standard under a well defined system of inspection.BIS and operated by the producer. 1986 and the Rules and Regulations made thereunder.
. of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau of Indian Standards. Standard marked products are also continuously checked by BIS for conformity to Details of conditions under which a licence for the use that standard as a further safeguard. testing and quality control which is devised and supervised by.Standard Mark The use of the Standard Mark is governed by the provisions of the Bureau of Indian The Standard Mark on Standards Act.
Comments on this Indian Standard may be sent to*BIS giving the following reference : Dot : No.I. 9 Bahadur Shah Afar Marg NEW DELHI 110002 Eastern : l/l4 C. E9 MIDC. 9 Bahadur Shah Z&r h&g.Borean of Indian Standrrd~ RIS is a statutory institutioqestablished
under the Bureau of Indian Standard9 Act. if any. Date of Issue Text Affected
BUREAU OF INDIAN STANDARDS Headquarters : Manak Bhavan.I. Enquiries relating to copyright be addressed to the Director (Publications). HYDERABAD. V. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. when necessary and amendments. BHOPAL. Copyright
BIS has the copyright of all its publications. are issued from time to time. Users of Indian Standards should ascertain that they are in’ possession of the latest amendments or edition. Maniktola CALCUTTA 700054 Northern : SC0 445-446. 1986 to promote harmonious development of the activities of standardization. marking and quality certification of goods and attending to connected matters in the country.T. of necessary details. And&i BOMBAY 400093
235 02 16
Branches : AHMADABAD. in the course of implementing the standard. Revision of Indian Standards Indian Standards are reviewed periodically and revised. Campus. This does not preclude the free use.Common to all Offices ) Telephone 33101 31 331 13 75 37 86 62 53 38 43
Southern : C. JAIPUR KANPUR. New Delhi 110002 Telephones : 331 01 31. Sector 35-C. Road. GUWAHATI. BHUBANESWAR. 331 13 75 Regional Offices : Central : Manak Bhavan. BIS.T. MADRAS 600113 Western : Manakalaya. BANGALORE. 4 Cross Road. -GAB THIRUVANANTHAPURAM
.P. type or grade designations. Marol. Scheme VII M. PATNA. CHANDIGARH 160036 Telegrams : Manaksanstha (. BDC 2 (4435 ) Amendments Issoed Since Brblicatioa Amend No. such as’symbols and sizes.I.
1 MARCH1993 TO IS 1592 : 1989 ASBESTOS CEMENT PRESSURE PIPES .1) Substitute Revision) the following for the existing clause:
Reprography Unit. BIS.1 The sampling. inspection and acceptance shall be in accordance with IS 7639 : 1975. New Delhi India
.SPECIFICATION ( Third
(Page 4. clause 12. Each inspection lot shall include only items of the same diameter and of the same class.AMENDMENT NO.
foreword.Substitute the following for the existing
‘1 Additions of ground silica or pozzolatta (up to a maximum of 40 percent by mass) to replace
otdinary Pothad cement is permissible.1. Note 1 ) 7. When pozzolana is used it shall conform to grade 1 of IS 1344:1981 or IS 3812:198$ ( When ground silica is used.1) -Substitute
‘3.1 Composition
the following for existing clause:
Asbestos cement pressure pipes shall be made from a thorough and homogenous mixture of 33 grade ordinary Portland cement conforming to IS 269 : 1989 or 43 grade ordinary Portland cement’ conforming to IS 8112 : 1989 or 53 grade
ordinary Portland cement or rapid hardening Portland cement conforming to IS 8041 : 1990 or Portland slag cement conforming to IS 455 : 1989 or Portland pozzolana cement conforming to either IS 1489 (Putt 1) : 1991 or IS 1489 (part 2) : 1991 and asbestos fibre. *. the pipes shall beautoclaved. 33 grade Specification (fourth revision)’ for ‘IS 269 : 1976 Ordinary and low heat Portland cement (third rev. para 3 ) -
Delete the entire para.C I Substitute ‘IS 455 : 1989 Portland slag cement . 2 APRIL 1995 TO IS 1592 : Z989 ASBESTOS CEMENT PRESSURE PIPES .’ H” . Substitute the following for ‘IS 1489 : 1976.
( Page f.isim)‘.Specification (fourth revisim) for ‘IS 455 : 1976 Portland slag cement’.SPECIFICATION
(Second coverpage. clause 3. clause 3. Portland-pozzolana cement (second revision)‘: ‘IS 1489 (Part 1) : 1991 Portland-pozzolana Specification: Part 1 Fly ash based (third revision) cement -
. Anner A ) :
Substitute ‘IS 269 : 1989 Ordinary Portland cement.NO.
(Page 1.
2 to IS lW2 i.Specification @rst wvision)‘. 9 Add the following at the end: ‘IS 12269 : 1987 SpeciGcation for 53 grade ordinary Portland cemeut’.1989
IS 1489 (Part 2) : 1991 Portland-pozzolana cement Specification : Part2 Cekined clay bnsed (third revision)‘. New JMbi. India
Reproonphy Unit.Amend No. iv) Add the following after ‘IS 8041: 1978 Rapid hardening Portlaad cement (/hf revishn)‘: ‘IS 8112 : 1989 43 grade ordinary Portlandcement . BIS.
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