Composite outer coating for tubular metal members and its...

Details Composite outer coating for tubular metal members and its... Composite outer coating for tubular metal members and its...

F - Mech Eng,Light,Heat,Weapons

16

L

154/144, 154/53.

F16L 58/16 (2006.01) F16L 58/02 (2006.01)

Patent

CA 1171772

ABSTRACT OF THE DISCLOSURE The outer surface of a ferrous metal pipe is covered with epoxy or polyester resin weighing between 50 and 500 g/m2. Before it hardens the resin layer is covered by a wound on second layer of woven or non-woven fabric impregnated with still wet cement mortar applied to the fabric before winding. The fabric fibres may be polypropylene, polyvinyl chloride, polya- mide or polyester. The cement mortar can be portland, aluminous or slag cement and, with respect to the cement, contain between 20 and 50% by weight of water and between 0 and 100% by weight of sand. The second layer is then covered with a sealing layer which can be bitumen, tar or an emulsion of resin.

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