Tender for Supply Of 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 End And Other End Protected With Plastic Thread Protector. The Socket Confirming To Is:1239 (part-ii):2011 (fifth Revision) in Harnaut - Bihar

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