supply of procurement of hose pipe size 31.5 mm bore in lengths of 15 meters each etc.procurement of hose pipe size 31.5 mm bore in lengths of 15 meters each etc.,hose pipe size 31.5 mm bore in lengths of 15 meters each to llhs drg.no.if/m -7/k, alt-1 and is: 444-2017 (reaffirmed 2018) fifth revisio type-2. type of material-rubber, with rubber inner lining and rubber outer cover, reinforcement nylon fabric/textile b raided and mandrel made preferred. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ] dy.cmm/halisahar, er west bengal 3804.00 metre