| 摘要 |
A bottom ring (8) for a mould for casting a concrete pipe is adapted to form an end face of the concrete pipe. The bottom ring (8) has at least two through slots (9) which extend in the circumferential direction of the ring and are distributed in the circumferential direction and hold rubber strips (5) for partial embedding in the concrete pipe during casting of the concrete pipe. The slots (9) have a smaller width than a first portion (5') of the rubber strips (5), which is adapted to be embedded in the concrete pipe (2), and a greater width than a second portion (5") thereof, which is adapted to project from the concrete pipe (2), the bottom ring (8) holding the rubber strips (5) suspended from the slots (9). |
