Steel Tube 25 Nb X 6 Meter Length, Heavy, Erw, Galvanized, Confirming To Is:1239 (Part -I):2004 (Sixth Revision), Screwed At Both Ends As Per Is:554:1999 (Fourth Revision), Socketed At One E Nd And Other End Protected With Plastic Thread Protector. The Socket Confirming To Is:1239 (Part-Ii):20 11 (Fifth Revision). [ Warranty Period: 30 Months After The Date Of Delivery ] ]