supply of tube m.s.galvanised medium grade 40mm duly isi marked galvanised mild steel tubes electrical resistances welded (erw)/high frequency induction welded (hfiw) / hot finished welded (hfw) confirming to is:1239tube m.s.galvanised medium grade 40mm duly isi marked galvanised mild steel tubes electrical resistances welded (erw)/high frequency induction welded (hfiw) / hot finished welded (hfw) confirming to is:1239,tube m.s.galvanised medium grade 40mm duly isi marked galvanised mild steel tubes electrical resistances welded (erw)/high frequency induction welded (hfiw) / hot finished welded (hf w) confirming to is:1239 (part-i)/1990 (fifth revision) with amdt. no.1 to 5. screwed at both ends as p er is:554/1985, socketed at one end and other end protected with plastic thread protector. the socke t confirming to is:1239 (part-ii) / 1992 (fourth revision) with amdt. no. 1 in random length of 4 to 7 mt rs. [ 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 ] ] amm (cog) wb, cr maharashtra 165.00 metre