supply of set of hex steel nipples [parallel and taper threads a and b] pipe socket reducing nipples [tapper threads y]set of hex steel nipples [parallel and taper threads a and b] pipe socket reducing nipples [tapper threads y],set of hex steel nipples [parallel and taper threads a and b] pipe socket red ucing nipples [tapper threads y] for loco pipe lines as per sketch no.elw/bsl/sk.no.9060 alt -1 or latest [one set consists of 27 items -108 nos. only as per annexure enclosed]. [ warrant y period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]