engagement of third party agency for inspection monitoring and quality assurance of different type of pipe materials delivered site for various ongoing project in different zone under jal swapna project of phe directorate in state of west bengal , inspection and testing for quality monitoring pipe materilas delivered at site of various ongoing contract under jal swapna project of phe dte in the state of west bengal note:- samples of hdpe pipe as per is 4984/upvc pipe conforming to is 4985 & schedule 80 of astm d 1785/ ppr pipe as per is 15801 are to be tested for dimensions , visual appearance , reversion test , density , melt flow rate , sulphate ash content & carbon black content as specified in respective standards . , for north zonedistrict covered:- malda , uttar dinajpur , dakshin dinajpur , coochbihar , alipurduar , jalpaiguri , kalimpong , for mid zonedistrict covered:- murshidabad , nadia , north 24 pargana , for sothern zonedistrict covered:- howrah , hooghly , south 24 pargana , for central zonedistrict covered:- purba bardhaman , paschim bardhaman , birbhum , purulia , for western zonedistrict covered:- purba medinipur , paschim medinipur , bankura , jhargram