Patent ID: 6905146

Claim:
A method of making a pipe assembly which comprises the steps of: a. forming a pipe having an end and provided with an internal wear-resistant coating resistant to chemical attack and of uniform thickness over a length of said pipe; b. removing part of said internal coating to provide an annular recess at said end forming a housing while leaving a remainder of said internal coating around said recess continuing as an in-line prolongation of said internal coating to the end face of said pipe; and c. inserting a tubular first portion of a pipe fitting into said housing at said end and anchoring said tubular first portion therein, said tubular first portion being provided with an internal wear-resistant and chemical-attack-resistant coating so that an interior surface thereof is flush with an interior surface of the internal coating of the pipe adjacent said fitting, said fitting having a second portion external of said pipe and integral with said first portion for connection to another pipe fitting.