Tube M.S.Galvanised Medium Grade 25Mm Duly Isi Marked Galvinised Mild Steel Tubes El Ectrical Resistences Welded (Erw)/High Frequency Induction Welded (Hfiw) / Hot Finished Welded (Hfw) Confirming To Is:1239 (Part-I)/1990 (Fifth Revision) With Amdt. No.1 To 5. Screwed At Both Ends As Per Is :554/1985, Socketed At One End And Other End Protected With Plastic Thread Protector. The Socket Conf Irming To Is:1239 (Part-Ii) / 1992 (Fourth Revision) With Amdt. No. 1 In Random Length Of 4 To 7 Mtrs. [ W Arranty Period: 30 Months After The Date Of Delivery ] ]