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在厦门城市输配水管道中,目前大口径的管道(DN≥300mm)采用的管材,以球墨铸铁管(分为离心球墨铸铁管及连续球墨铸铁管)所占的比例较大。小口径管道(DN<
In Xiamen city water distribution pipeline, the current large-diameter pipe (DN ≥ 300mm) used pipe, ductile iron pipe (divided into centrifugal ductile iron pipe and ductile iron pipe) accounted for a large proportion. Small diameter pipe (DN <