supply of fabricated and galvanized (b-series mast) steel structuresfabricated and galvanized (b-series mast) steel structures,supply of fabricated and galvanized b series steel structures as per rdso spec no. eti/ohe/ 13[4/84] with a and c slip no. 1,2 and 3 for galvanization using fabricators own steel and zinc, steel confor ming to is:2062/2011, is:800, gr.e.250[fe-410w] quality a and is 808/1989 and zinc to is 209/1992 (1) b- 150 mast of 9.5 mtrs length with approximate weight of 378.7 kgs - 21 nos- total weight-7.9527 mt (2) b-1 75 mast of 9.5 mtrs length with approximate weight of 432.4 kg - 16 nos - total weight-6.9184 mt (3) b-20 0 mast of 9.5 mtrs length with approximate weight of 482.22 kg - 11 nos- total weight-5.3044mt. total wei ght of 20.18 mt [b-150 mast- 21 nos, b175 mast-16 nos, b-200 mast-11 nos] [ warranty period: 30 mont hs after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] sr section engineer tamil nadu 20.18 mt