supply of porcelain bracket insulator (ri 6030-1) (1050mm cd) for 25kv, ac, 50 hz, single phase, over head traction linesporcelain bracket insulator (ri 6030-1) (1050mm cd) for 25kv, ac, 50 hz, single phase, over head traction lines,porcelain bracket insulator (ri 6030-1) (1050mm cd) for 25kv, ac, 50 hz, single phase, over head traction lines as per rdso spec no. ti/spc/ ohe/ ins/0071 [ warranty period: 30 months after the date of delivery ] ] , porcelain bracket insulator (ri 6030-1) (1050mm cd) for 25kv, ac, 50 hz, single phase, over head traction lines as per rdso spec no. ti/spc/ ohe/ ins/0071 [ warranty period: 30 months after the date of delivery ] ] , porcelain bracket insulator (ri 6030-1) (1050mm cd) for 25kv, ac, 50 hz, single phase, over head traction lines as per rdso spec no. ti/spc/ ohe/ ins/0071 [ warranty period: 30 months after the date of delivery ] ] , porcelain bracket insulator (ri 6030-1) (1050mm cd) for 25kv, ac, 50 hz, single phase, over head traction lines as per rdso spec no. ti/spc/ ohe/ ins/0071 [ warranty period: 30 months after the date of delivery ] ] , porcelain bracket insulator (ri 6030-1) (1050mm cd) for 25kv, ac, 50 hz, single phase, over head traction lines as per rdso spec no. ti/spc/ ohe/ ins/0071 [ warranty period: 30 months after the date of delivery ] ] , porcelain bracket insulator (ri 6030-1) (1050mm cd) for 25kv, ac, 50 hz, single phase, over head traction lines as per rdso spec no. ti/spc/ ohe/ ins/0071 [ warranty period: 30 months after the date of delivery ] ] , porcelain bracket insulator (ri 6030-1) (1050mm cd) for 25kv, ac, 50 hz, single phase, over head traction lines as per rdso spec no. ti/spc/ ohe/ ins/0071 [ warranty period: 30 months after the date of delivery ] ]