supply of hardware fittings for maintenance of 400kv s/s azamagrh under electy. 400kv s/s division, azamgarh , laying and jointing pvc pipe. heading , big size finger contact for 400 kv center break isolator with silver coating of 25 micron (as per sample) , small size finger contact for 400 kv center break isolator with silve coating of 25 micron (as per sample) , finger guide suitable for 400 kv central break isolator made of lm-6 alluminium alloy (as per sample.) , springs suitable for 400 kv hbb make isolator made of ss-304, having material containing (cr 18%, ni 8%) & tensile strength (325-355 mpa) .as per sample , roller suitable for 400 kv hbb make isolator made of stainless steel having anti corrosive property & capable of bearing high temperarure(minimum 300 degree c).as per sample