procurement of flanges as per tender specification at digboi refinery procurement of flanges as per tenderspecification at digboi refinery , list of item ( s ) / work ( s ) as per tender documents , fl , sw , rf , cs , a105 , 150 , 1/2in , sch80 , fl , sw , rf , cs , a105 , 300 , 1/2in , 80 , fl , sw , rf , cs , a105 , 150 , 3/4in , sch80 , fl . sw rf , cs , a105 , 300 , 3/4in , sch 80 , fl , wn , rf , cs , a105 , 300 , 1 , 40 , fl , wn , rf , cs , a105 , 300 , 1in , 80 , fl , wn , rf , cs , a105 , 150 , 3in , 40 , h2 , fl , wn , rf , cs , a105 , 150 , 3in , 40 , fl , wn , rf , cs , a105 , 300 , 3in , 80 , fl , sw , rf , cs , a105 , 300 , 4in , sch40 , fl , wn , rf , cs , a105 , 150 , 6in , 40 , fl , wn , rf , cs , a105 , 300 , 6in , 40 , fl , wn , rf , cs , a105 , 150 , 6in , 80 , fl , wn , rf , cs , a105 , 150 , 8in , 80 , fl , wn , rf , cs , a105 , 300 , 8in , 80 , fl , wn , rf , cs , a105 , 300 , 8in , 40 , h2 , fl , wn , rf , as , a182 , f5 , 300 , 1 1/2 , 80 , fl , wn , rf , as , a182 , f5 , 150 , 3 , 80 , fl , wn , rtj , as , a182 , f5 , 300 , 6in , 80 , fl , wn , rf , as , a182 , f5 , 300 , 10 , 80