Corrugated plastic pipe sections having flanged ends and structurally tight joints thereof

Two abutting sections of large diameter corrugated plastic pipe each having transverse corrugations and an inner liner and a flange at abutting ends joined in an assembly having a clamp encompassing the abutting flanges forming a joint.

Two sections of large diameter corrugated plastic pipe each having transverse corrugations and an inner liner and a flange at the end of each pipe section joined in an assembly in which a gasket is interposed between the flanged ends of the pipe and a peripheral clamp encompasses the abutting flanges.

A section of large diameter corrugated plastic pipe having transverse corrugations and an inner liner and a flange at an end joined to one of the group of plastic pipes;

• non-plastic pipes;
• plastic fittings;
• and non-plastic fittings having a flange end at the location of a joint.

The method of forming a flange at the end of a corrugated plastic pipe section having transverse corrugations comprising forming a circumferential portion integrally and radially extending from the end of the pipe from at least one of the end corrugation at the pipe end and the liner of the pipe at the end of the pipe section.

The method of joining a section of corrugated pipe plastic having a flange at its end forming a first member abutting a second member being a section of a corrugated pipe, a non-plastic pipe or a fitting having a flange at its end comprising aligning the first and second members in a co-linear relationship in which the end flanges of the members are in an approximately abutting relationship, and applying a flange clamp circumferentially straddling the flanges to provide a force on the exterior surface of the flanges to draw the flanges together.

Two sections of large diameter corrugated plastic pipe each having transverse corrugations and an inner liner and a flange at the end of each pipe section joined in a clamped assembly including an outer gasket encompassing the radially peripheral ends of the flange.

A kit for providing a joint between adjacent sections of corrugated plastic pipe or a section of corrugated plastic pipe having essentially similar cross-sections and a pipe or fitting having a flanged end, the kit including a peripheral flange clamp having a cross sectional shape such that the clamp is capable of straddling the flanges at the end sections to be joined.

The method of forming a flange at the end of a section of corrugated plastic pipe by transversely severing from the pipe a section of a corrugation of the pipe at an axial location on the corrugation at the end of a pipe section.

A fitting having at least two flanges in which one of the fitting ends has an off set, selectable diameter flange reducer coupling capable of being cut off at a predetermined flange diameter.