Plastics piping systems for drainage and sewerage with or without pressure - Glass-reinforced thermosetting plastics (GRP) based on unsaturated polyester resin (UP) - Specifications for pipes, fittings and joints
带或不带压力的排水和污水用塑料管道系统.基于不饱和聚酯树脂(UP)的玻璃纤维增强热固性塑料(GRP).管道、配件和接头规范