Pipe clamp lock

A pipe clamp having a central axis, a first end region (1) and a second end region (2) each extending in the circumferential direction and each having a free end, an outside surface and an inside surface, said first end region comprises a projecting section (3) extending radially outwardly from the outside surface, said projecting section (3) has a radial dimension from the outside surface decreasing in the circumferential direction towards the free end of said first end region, said second end region comprises a radially flexural circumferentially extending locking strip (4) including a stop face (5) extending generally in the direction of the central axis and facing away from the free end of said second end region, said first and second end regions having an overlapping section extending in the circumferential direction, wherein the improvement comprises that said first end region in said overlapping section has two guides spaced apart in the direction of the central axis (6, 7) preventing radially outward movement of said second end region, wherein each of said guides is formed by a part bent radially outwardly from a side of said first end region and then bent inwardly extending generally parallel with the central axis, each of said parts having a free end (8, 9) facing one another, said free ends (8, 9) of said parts forming said guides (6, 7) are spaced apart by a dimension (A), said locking strip (4) having a width extending generally parallel to the central axis, and the dimension (A) between the free ends (8, 9) of said parts forming said guides (6, 7) is greater than the width of said locking strip (4).