| 摘要 |
A watertight connection device for a sewer pipe is provided to seal joint between pipes and the watertight connection device securely by flaming a connection pipe to two ends of the watertight connection device. A watertight connection device(10) for a sewer pipe comprises reinforcing protrusions(11), ring grooves(13), and extrusions(12). The reinforcing protrusions are formed into semi-circles vertically and horizontally on the outer surface of the watertight connection device. A rubber rings are inserted to the ring grooves formed at two sides of the watertight connection device. The extrusions are protruded outwards from the two ends of the watertight connection device. Sewer pipes are inserted to both ends of the watertight connection device and then the rubber ring is fastened around the both ends of the watertight connection device.
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