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Search the history of over billion web pages on the Internet. Full text of ” IS This standard was first published in and revised inand In this fourth revision the following major changes have been affected: Pipes for sewer- age and industrial effluents are being covered in a separate standard.
Regarding guidance for laying and jointing of polyethylene pipe, including storage and handling, 4894 reference may be made to IS Part Part 1 1 Laying and jointing polyethylene PE pipes’.
HDPE Pipes – Jain High Density Polyethylene Pipes
The composition of technical committees responsible for the formulation of this standard is given in Annex D. For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result pkpes a test or analysis, shall be rounded off in accordance with IS 2: The number of significant places retained in the rounded off value should be the same as that of the specified value in this standard.
These stripes shall be coextruded during pipe manufacturing and shall not be pies than 0. The material of the stripes shall be of the same type of resin, as used in the base compound for the pipe.
Pipe manufacturers shall obtain a certificate to this effect from the manufacturers of raw material. In addition the material shall also conform to 5. The carbon black content in the material shall be within 2. The anti-oxidant used shall be physiologically harm- less and shall be selected from the list given in IS No other reworked or recycled material shall be used.
Bentex HDPE Pipe As Per Is , Application:Drinking Water, Rs 45 /meter | ID:
Nominal Diameter DN 1 16 20 25 32 40 50 63 75 90 PN2. Alternatively and for higher sizes, the diameter shall be measured preferably by using a flexible Pi tape or a circometer, having an accuracy of not pipe than 0. The wall thickness shall be measured by a dial vernier or ball ended micrometer. The resulting dimension shall be expressed to the nearest 0.
NOTES 1 The outside diameter shall be measured at a distance of at least mm from the end of the pipe. For pipes to be coiled, the ovality shall be measured prior to coiling. For coiled pipes, however, re-rounding popes pipes shall be carried out prior to the measurement of ovality.
The ends shall be cleanly cut and shall be square with axis of the hdppe. Slight shallow longitudinal grooves or irregularities iu the wall thickness shall be permis- sible provided that pipew wall thickness remains within the permissible limits. The temperatures, duration of test piipes induced stresses for the test shall conform to those specified in Table 484.
Such tests, therefore, need be applied only when a change is made in polymer com- position or method of manufacture, or when a new size of pipe is to be introduced. If in repeat test, no single failure occurs, the type of pipe under consideration shall be considered eligible for type approval. If any of the samples fails in the repeat tests, the typeof pipe shall not be approved. The manufacturer or the supplier may be asked to improve the design and resubmit the product for type approval.
For ascertaining conformity of the lot to the require- ments of this specification, samples shall be selected in accordance with the provisions as men- tioned under 9.
Is 4984 HDPE Pipes
For guidance and use of random number tables, IS In the absence of a random hd;e table the following procedure may ydpe adopted. Every rth pipe so counted shall be drawn so as to constitute the required sample size. A pipe failing to satisfy any of these requirements shall be considered as defective. The lot shall be deemed to have satisfied these requirements, if iss number of defectives found in the first sample are less than or equal to the corresponding acceptance number given in col 5 of Table 7.
The lot shall be deemed not to have met these requirements if the number of defectives found in the first sample is greater than or equal to the corresponding rejection numbers given in col 6 of Table 7. If, however, the number of defectives found in the first sample lies between the corresponding acceptance and rejection numbers given in col 5 and 6 of Table 7, the second sample of the size given in col 3 of Table 7 shall be Table 7 Scale of Sampling for Visual and Dimensional Requirements Clauses 9.
The lot shall be considered to have satisfied these require- ments, if the number of defectives found in the cumula- tive sample is less than or equal to the corresponding acceptance number given in col 5 of Table 7; otherwise iiOi. All the pipes in each of the sample size shall be tested for compliance in the requirements for hydraulic characteristics 8.
The lot shall be considered to have met the requirements of these tests, if none of samples tested fails. The details of conditions under which a licence for the use of the Standard Mark may be granted to manufacturers or producers may be obtained from the Bureau pipess Indian Standards.
No negative tolerances are allowed. The basis for the values specified is: In case of variation in water temperature, the working pressure needs to be modified as. However, occasional rise in temperature as in summer season with concurrent corresponding reduction in temperature during night has no deleterious effects on the life and working pressure of the pipes.
NOTE — Considering operational problems, maxi- mum wall thickness of pipes are considered around 63 mm.
The pipe shall remain free to move in longitudinal direction. The test pressure p shall pies calculated as follows from the minimum dimensions given in the Table 3 or 4 or 5, as the case may be and the corresponding induced stress values given in Table 6. The test showing failure within a distance equivalent to the length of end cap from the end shall be disregarded and the test repeated.
C-1,2 Thermometer — Hde to 0. In such cases, the entire circumference of approximately mm long section of pipe shall be divided into pieces measuring approximately mm square. The direction of the pipe axis shall be marked on the pieces. Pipex pieces are required to be tested. A mark shall be scribed on the external surface approximately 50 mm from each end of the test pieces in the axial direction of pipe, in the case of complete section of pipe, the mark shall be scribed ppes the whole circumference.
The test pieces shall not touch each other. The glass plate with the test pieces shall then be placed in the oven heated to test temperature and capable of maintaining continuous forced air circulation.
The test pieces shall be kept in the oven at the temperatures and for the periods specified below: Measure hdpee minimum distance between the two marks. Dhage Alternate Shri M. Sauce Alternate Shri S.
Patel Alternate Dr H. Yadav Alternate Shri G. Das Alternate Shri D. K Pandey Alternate Shri C. Sharma Alternate Shri O. Sunderamoorthy Shri Thimu G. Shenbagawandam Alternate Shri S. Phadnis Alternate Shri J, R. P4 Convener Shri Kanwar A.
Singh Members Shri V. Datt Alternate Shri K. Shembekar Alternate Dr Y. Narainswami Alternate Shri S. Phadnis Alternate Shri S. Sinha Alternate Shri O. Copyright BIS has the copyright of all its publications.
No part of these publications may be reproduced in any 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. 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 Handbook’ and ‘Standards Monthly Additions’. This Indian Standard has been developed from Doc: Page 11, Annex C, clause C Nominal diameter Maximum out of square DN of pipe end mm mm 16 to 75 2 90 to 3 to 4 to 5 Above 7 Page 9, Annex A, A-l — Substitute the following for the existing clause: The material of the pipe thus produced shall conform to the requirements of 5.
Page 2, clause 5. Page 7, clause 8. The material of pipe thus produced shall conform to requirements of 5.