F - Mech Eng,Light,Heat,Weapons – 16 – L
Patent
F - Mech Eng,Light,Heat,Weapons
16
L
285/43
F16L 13/00 (2006.01) B29C 65/00 (2006.01) B29C 65/34 (2006.01) F16L 47/03 (2006.01) F16L 47/28 (2006.01)
Patent
CA 2007520
The improved electrofusion joint and header for supplying hot water that perform satisfactorily at elevated temperatures as evidenced by high heat resistance, that exhibit good sealing property and that can be handled efficiently in mounting and various other operations have a crosslinked thermoplastic resin layer and at least one joining portion which comprises a non-crosslinked thermoplastic resin layer that is formed a as an integral part of said crosslinked thermoplastic resin layer in the area where it contacts a tubular member to be joined, and a heating electric wire provided either within or on the outer or inner surface of said non-crosslinked thermoplastic resin layer. Such electrofusion joint and header are applicable to any part of a piping system for supplying hot water and they will withstand use for a prolonged period.
Mito Kazunori
Nagatani Fumio
Nakaoka Mikio
Nakashiba Akio
Nishimura Hiroyuki
Kirby Eades Gale Baker
Mitsui Chemicals Incorporated
Mitsui Petrochemical Industries Ltd.
Osaka Gas Co. Ltd.
Shinwa Sangyo Co. Ltd.
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