supply of steel tube galvanized isi marked in random length of 4 to 7 mtrs. screwed at both ends, socketed at one end and other end protected with plastic protector, nominal bore 15mm dia, medium class, sockets shall also be isi mark.material and specification is:1239 (pt.1)/2004 (rev.6) amend - 4 of june 2010 for tube, is:1239 (pt.2)/2011 (rev.5) amend- 1 of sept 2012 for socket and is:554 (rev.4)/1999 with amend- 1 of oct.2009 for screwed.steel tube galvanized isi marked in random length of 4 to 7 mtrs. screwed at both ends, socketed at one end and other end protected with plastic protector, nominal bore 15mm dia, medium class, sockets shall also be isi mark.material and specification is:1239 (pt.1)/2004 (rev.6) amend - 4 of june 2010 for tube, is:1239 (pt.2)/2011 (rev.5) amend- 1 of sept 2012 for socket and is:554 (rev.4)/1999 with amend- 1 of oct.2009 for screwed.,steel tube galvanized isi marked in random length of 4 to 7 mtrs. screwed at both ends, socketed at one end and other end protected with plastic protector, nominal bore 15mm dia, medium class, sockets shall also be isi mark.material and specification is:1239 (pt.1)/2004 (rev.6) amend - 4 of june 2010 for tube, is:1239 (pt.2)/2011 (rev.5) amend- 1 of sept 2012 for socket and is:554 (rev.4 )/1999 with amend- 1 of oct.2009 for screwed. [ warranty period: 30 months after the date of delive ry ] ]