Plastics piping systems for pressure and non-pressure water supply. Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin— 66 стр.
Plastics piping systems for pressure and non-pressure drainage and sewerage. Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin— 68 стр.