Tube M.S. Galvanised Medium Grade 40Mm Duly Isi Marked Galvanised Mild Steel Tubes Electrical Resistances Welded (Erw)/High Frequency Induction Welded (Hfiw) / Hot Finished Welded (Hf W) Confirming To Is:1239 (Part-I)/2004 Reaffirmed 2019. Screwed At Both Ends As Per Is:554/1999 Reaf Firmed 2019, Socketed At One End And Other End Protected With Plastic Thread Protector. The Socket Co Nfirming To Is:1239 (Part-Ii) / 2011 Reaffirmed 2021 In Random Length Of 4 To 7 Mtrs. Spe As Above Spec [ Warranty Period: 30 Months After The Date Of Delivery ] [Quantity Tolerance (+/-): 5 %Age , Item Category : Normal , Total Po Value Variation Permitted: Max 8 Lacs ] ]