Tenders for Supply Of Galvanized M.s.tubes- Nominal Bore 40mm, Medium Class, Erw/hfiw/hfw - Quality And Random Length 4 To 7 Mtrs. Conforming To Is: 1239 Part 1 - 2004. Screwed At Both The Ends As Per Is: 554 / 1999, Socketed At One End & Other End Protected With Plastic Thread Protector. Socket Conforming To Is: 1239 Part 2 - 2011. G.i Pipe Shall Be Duly Isi Marked As Per Statutory Requirement.