procurement for hbb make isolator rotary head and clamps at 400 kv s / s azamgarh under electy. 400 kv s / s division, azamgarh. procurement for hbb make isolator rotary head and clamps at 400 kv s / s azamgarh under electy. 400 kv s / s division, azamgarh. , rotary head assembly made of gun metal alloy leg type inside mounting 08 nos. copper roller alloy with brass strip matching with top bottom rotaryinside mounting with bearing seal tightening with top head matching 02 nos. holes of 12 mm dia. the assembly fitted in iron leg alloy with 25 mm dia both suitable for 220kv side hbb make isolator ( as per sample ) . , vertical twin moose clamp one end for plate type fitted at rotary head top and other end for twin moose conducor made of lm-6alloy alongwith gi nut bolt &washer suitable for 2000amp. 220kv tendom isolator ( as per sample ) .