Tender For corrigendum : supply of material code: w90318103150 pressure switch for oil purification unit: 1 no. each type and range , material code: w90318103168 rtds for oil purification unit: 1 no. each type and range , material code: w90318103354 vacuum gauge for lube oil purifier , material code: w90318103290 mandatory spares for flow switch of oil purifier unit, , material code: w90318103176 pressure indicators for oil purification unit: 1 no. each type and range , material code: w90318103184 temp indicator for oil purification unit: 1 no of each type and range , material code: w90318103192 level switch for oil purification unit: 1 no. of each type and range , material code: w90318103206 flow meter/indicator for opu , material code: w90318103400 limit switch for opu