nit 308/supply of electrical line materials under oandm head for f.y. 2024-25 under esa, giridih supply of electrical line materials under oandm head for f.y. 2024-25 under esa, giridih , electrical items : , 33 kv polymer pin insulator 10 kn with gi pin and nuts & washer , 33 kv b&s type disc insulator (polymer) 90 kn with h/w fitting , 11 kv pin insulator 5 kn with gi pin (polymer type) and nut & washer , lt pin insulator with pin [porcelain type] , lt shackle insulator with strap [porcelain type] , 11 kv b&s type disc insulator (polymer type) 45 kn with h/w fitting , 11 kv b&s type disc insulator (polymer type) 70 kn with h/w fitting , 33 kv post insulator 10 kn [polymer type]