supply of procurement of 20 x 0.63mm and 20 x 0.5mmprocurement of 20 x 0.63mm and 20 x 0.5mm,supply of 20 pair 0.5 mm conductor dia armoured pijf underground telephone cable as per i rs specn. irs/tc-41-97 with amendment no.3 or latest. [ warranty period: 30 months after the date of d elivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] , supply of 20 pair x 0.5mm dia polythene insulated polythene strengthened jelly filled underg round telephone cable with poly aluminum moisture barrier annealed copper conductor double steel tap e armored with polythene jacketed as per rdso specification no. irs:tc/41/97 with amd 3 or latest , packi ng length should be 500mtrs per drum. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] , supply of 20 pair pijf cable 0.63 mm dia underground armoured polythene insulated sheathe d jelly field telecom cable with poly a1 moisture barrier as per rdso specn - irs/tc/41-97 with amendmen t no.1,2,3 or latest. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ] , supply of 20 pair x 0.5mm dia polythene insulated polythene sheathed jelly filled undergrou nd telephone cable with poly aluminium moisture barrier annealed copper conductor double steel tape arm oured with polythene jacked as per rdso spec. no.irs.tc/41/97 with amdt. 3. packing length should be 50 0 mtrs per drum. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted: max 8 lacs ] ]