G.I.Mild Steel Tubes (Erw) Isi Marked Size 40 Mm Nominal Bore Medium Grade Conforming To Is: 1239 (Part-1)/ 2004 Amdt. No. 6 Of June 2021 In Randum Length 4 To 7 Mtrs. Screwed On Both Ends As Per Is: 554/1999, Socketed At One End Conforming To Is: 1239 (Pa Rt-Ii) /2011(5Th Revision) With Amdt. No.1 Of Sep. 2012. And Other End Protected With Plastic Protector. (278 Mtrs. = 1M.Ton) [ Warranty Period: 30 Months After The Date Of Delivery ] ]