Plastics piping systems for non-pressure underground drainage and sewerage. Structured-wall piping systems of unplasticized poly(vinyl chloride) (PVC-U), polypropylene (PP) and polyethylene (PE). General requirements and performance characteristics— 30 стр.
Fibre-reinforced plastic composites. Declaration of raw material characteristics. Specific requirements for resin, curing systems, additives and modifiers— 22 стр.