supply of brushes, wire steel for welders, size 300 x 50 mm to is: 4517/86 , sl.no. iv, table - 1note:- 1. the supplier shall submit three identical brushes for approval. 2. the indentor or the inspection authority shall retain one of the three s les approved against each item till the completion of the order. , brushes, wire steel for welders, size 300 x 50 mm to is: 4517/86 , sl.no. iv, table - 1 no te:- 1. the supplier shall submit three identical brushes for approval. 2. the indentor or the inspection authority shall retain one of the three samples approved against each item till the completion of the or der. [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitt ed: max 8 lacs ] ]