Patent ID: 8042252

Claim:
A method for installing a pipe coupling on a pipe comprising: providing a pipe coupling including a mandrel and an outer sleeve; inserting the mandrel into the pipe inner diameter of an end of the pipe with an outboard end of the mandrel protruding from the end of the pipe; positioning the outer sleeve substantially concentrically outwardly of the pipe in which the mandrel is inserted to form a length of substantially concentrically arranged, overlapping portions of the mandrel, the pipe and the sleeve; crimping over a first portion of the length to engage the pipe between the sleeve and the mandrel; crimping over a second portion of the length, partially overlapping with the first portion, to further engage the pipe between the sleeve and the mandrel; and, either before or after crimping, connecting the sleeve to the outboard end of the mandrel, wherein the pipe is a fiber reinforced pipe having a pitch length and the crimping proceeds over a crimp length of at least 80% of the pitch length.