tender for set of copper pipes for elgi make compressor type rr20100 consisting of04items, one no. each as given below:- i)delivery pipe a with flange elgi pt. no.-070304930 ii)delivery pipe b with flange elgi pt. no.- 070304960 iii) pipe cic to hp cylinderelgi pt. no- 070401400 iv) pipe d hp cylinder to ac elgi pt. no-070301530.