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A method and system for pressure pipe drilling cement-mortar lined and coated steel cylinders
Abstract A method for pressure pipe drilling a pipe comprising an exterior layer and an interior layer, the method comprising internally lining the pipe with a fluid-tight sheath; drilling a first cavity through the exterior layer until exposing the interior layer; injecting a sealant into the first cavity; and drilling a second cavity within the first cavity through the interior layer and the fluid-tight sheath. - -4 - A 4 4 -- -A--. f4 44 a 4 -
A method and system for pressure pipe drilling cement-mortar lined and coated steel cylinders
Abstract A method for pressure pipe drilling a pipe comprising an exterior layer and an interior layer, the method comprising internally lining the pipe with a fluid-tight sheath; drilling a first cavity through the exterior layer until exposing the interior layer; injecting a sealant into the first cavity; and drilling a second cavity within the first cavity through the interior layer and the fluid-tight sheath. - -4 - A 4 4 -- -A--. f4 44 a 4 -
A method and system for pressure pipe drilling cement-mortar lined and coated steel cylinders
GAGNON GILLES (author) / DAVISON MICHAEL (author) / BUREAU MARTIN (author)
2022-04-07
Patent
Electronic Resource
English
British Library Conference Proceedings | 2005
|Mortar-lined steel pipe adopted for large mains
Engineering Index Backfile | 1938