ISO 16631:2016 用于供水设施和塑料管道连接, 修理和更换且与塑料 (PVC或者PE) 管道系统兼容的球墨铸铁管, 配件, 附件及其接头
Ductile iron pipes, fittings, accessories and their joints compatible with plastic (PVC or PE) piping systems, for water applications and for plastic pipeline connections, repair and replacement