supply of galvanized mild steel tubes electrical resistance welded ( erw ) / high frequency induction welded ( hfiw ) / hot finished welded ( hfw ) confirming to is 1239 ( part1 ) / 2004 screwed at both ends as per is:554 / 1999 socketed at one end other end protected with plastic thread protector .the socket confirming to is :1239 ( part ii ) / 2011 in random length of 4 to 7 mtrs. g.i.pipe shall be duly isi marked as per statutory requirement nominal bore 25 mm medium grade.galvanized mild steel tubes electrical resistance welded ( erw ) / high frequency induction welded ( hfiw ) / hot finished welded ( hfw ) confirming to is 1239 ( part1 ) / 2004 screwed at both ends as per is:554 / 1999 socketed at one end other end protected with plastic thread protector .the socket confirming to is :1239 ( part ii ) / 2011 in random length of 4 to 7 mtrs. g.i.pipe shall be duly isi marked as per statutory requirement nominal bore 25 mm medium grade., galvanized mild steel tubes electrical resistance welded ( erw ) / high frequency induction welded ( hfiw ) / hot finished welded ( hfw ) confirming to is 1239 ( part1 ) / 2004 screwed at both ends as per is:554 / 1999 socketed at one end other end protected with plastic thread protector .the socket confirming to is :1239 ( part ii ) / 2011 in random length of 4 to 7 mtrs. g.i.pipe shall be duly isi marked as per statutory requirement nominal bore 25 mm medium grade. carr. repair andhra pradesh 1896.00 metre stores / tpty , scr general & signal / mft , telangana 7200.00 metre