| 摘要 |
A composite advanced gas distribution pipe (11) suitable for advanced gas distribution is formed of a first, outer, curable resin impregnated felt tube reinforced longitudinally, and a second inner felt tube (13) impregnated with an uncured resin which is more rigid than the elastomeric resin and coated on at least the inside surface with a styrene resistant gas impermeable layer (14) and reinforced in the longitudinal and radial directions (33). The inner tube (13) has a nominal outside diameter greater than the nominal inside diameter of the outer tube (12). After installation the inner tube (13) is pressurised to expand the outer tube (12) and the uncured resin is cured activating the heat sensitive to bond the two tubes (12, 13) together and cure the pipe (13) with the outer (12) in the expanded condition. |
