Plastics piping systems for underground drainage and sewerage under pressure. glass - reinforced thermosetting plastics based on unsaturated polyester resin. part 3: fittings.
承压的地下排水和排污工程用塑料管道系统。基于不饱和聚酯树脂的玻璃纤维增强式热固塑料制品。第3部分：配件。
Plastics piping systems for underground drainage and sewerage under pressure. glass - reinforced thermosetting plastics based on unsaturated polyester resin. part 3: fittings.
承压的地下排水和排污工程用塑料管道系统。基于不饱和聚酯树脂的玻璃纤维增强式热固塑料制品。第3部分：配件。
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