BS EN ISO 11296-7. Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks. Part 7. Lining with spirally-wound pipes— 24 стр.
Steels; Classification; Part 2 : Classification of unalloyed and alloy steels according to main quality classes and main property or application characteristics— 12 стр.
Plastics piping systems for pressure and non-pressure drainage and sewerage -- Glass-reinforced thermosetting plastics (GRP) systems based on unsaturated polyester (UP) resin -- Amendment 1— 10 стр.
Thermoplastics piping systems for nonpressure underground drainage and sewerage -- Thermoplastics spirally-formed structured-wall pipes -- Determination of the tensile strength of a seam— 8 стр.