Patent ID: 6065781
Filing Date: 2000-05-23
Classification: B29C,F16L,Y10T

Abstract:
A coated, welded, pipe joint comprising:two lengths of steel of pipe laid end to end and joined at their proximate ends by a circumferential weld;a protective coating of polyolefin material on the outer surfaces of said two pipe lengths, said polyolefin material being discontinuous in the area of said weld, to provide an annular area on the outer surfaces of said pipe lengths in the area of said weld, said annular area being substantially free of said polyolefin coating material;a substantially continuous coating of epoxy-based pipe coating material applied over said annular area; anda nonepoxy based bonding material adapted to adhere to said pipe, to said polyolefin coating material and to said epoxy-based pipe coating material being interposed between, and in contact with each of, said epoxy-based pipe coating material and said polyolefin material,whereby a substantially continuous watertight protective coating is provided for said welded pipe joint in the area of said weld.