rate contract for supply of mounting structure and ct/pt structure for outdoor breakers as per annexure - a , rate contract for supply of galvanized structure(125 micron) for 24 months from approval at bhel, bhopal. evaluationshall be doen itemwise. , mounting structure and ct/pt structure for outdoor breakers as per annexure - a. vendor to quote rate on per kg basis. structures of different types mentioned in annexure -a will be ordered on number basis and the weight of each type of structure is mentioned in annexure - a. finish : the minimum weight of zinc coating shall be 900 gm/m2 and the minimum coating thickness shall be 125 microns. pvc clause will be applicable considering base rate of steel angles 50x50x6 mm, issued by jpc (average rate without gst of four cities delhi, kolkata, mumbai & chennai has been considered) is rs 45.73/kg. (s.no. 13).