supply of set of front & back ferrule , set of front & back ferrule stainless steel for lhb coaches in different size consisting of six items as item no.-01 , single ferrule size -28 mm od qty.-03 nos., item no.-02 as front & back ferrul e size - 1 od qty.-03 nos. , item no.-03 as front & back ferrule size 3/4 od qty.03 nos., item no.-04 a s front & back ferrule size 22 mm od qty.03 nos, item no.-05 as front & back ferrule size 1/2 od qty.0 2 nos. item no.-06 as front & back ferrule size 10 mm od qty.02 nos. nabl certificate for ss304. all fe rrule should be of ss304 material. (one set is equal 16 nos.) specn: nabl certificate for ss304. all ferr ule should be of ss304 material. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]