Cap for protecting pipe ends, and a cutout blank for making the cap

In a protective cap for the ends of tubular bodies, wherein the cap has two side edges and a skirt terminates at one of the said side edges by a fold groove, a strip folded through 90.degree. towards the inside of said skirt and being connected to said one side edge, a plurality of tongues each having a free end edge and an end connected to said strip and said tongues being folded in an in-use position to extend parallel to and inside the said skirt, and said tongues being separated from one another by a plurality of cutout slots, the improvement comprising each said cutout slot extends across the said strip to said folded groove, and each said cutout slot extends along a line which is curved relative to the free end edge of each tongue, thereby giving rise to a concave edge portion on one tongue and a convex edge portion on the immediately adjacent tongue, but wherein said line ceases to be curved shortly before reaching said free end edge of the tongue and terminates in a straight line extending substantially perpendicularly to said free end edge, thereby giving rise to a heel on the convex edge portion and to truncated point on the concave edge portion, each truncated point of a tongue being engageable beneath the heel of the adjacent tongue when the cap is in its in-use position.