Abstract: A tube and tube shield assembly comprising a cylindrical tube having an exterior surface and a locking block extending radially outwardly from the exterior surface, and a tube shield mounted on the tube immediately above the locking block. The tube shield includes a semi-cylindrical body portion having a radius substantially equal to that of the tube, and a tongue extending outwardly from an end or a side edge of the body portion and inserted through an aperture in the locking block. Retaining straps retain the body portion in tight engagement with the tube. Preferably, there are two retaining straps, which are inset from the first and second end edges, respectively, of the body portion, each of the retaining straps having ends overlapping the side edges of the body portion. The tongue is bent away from the tube to lock the tongue, and consequently the attached body portion, in place. In an alternate embodiment, tongues can be provided at both end edges for engagements with a pair of spaced locking blocks.