| 摘要 |
<p>A coupling (10) for three-wall, corrugated pipe, the pipe including a corrugated wall (22) having a plurality of primary corrugations, is disclosed. The coupling includes a first pipe section (16) having disposed at one end a bell portion (12), the bell portion having a bell portion of corrugated wall and an outer wall (24); a second pipe section (18) having disposed at one end a spigot portion (14), the spigot portion having a spigot portion of corrugated wall between an inner wall (20) and an outer wall; and a gasket (34) disposed in a groove extending around a circumference of the spigot portion and engaged between the bell portion of corrugated wall and the spigot portion of corrugated wall. A three-wall, corrugated pipe section, and method for assembling a plurality of three-wall, corrugated pipe sections, are also disclosed.</p> |
