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热力管道保温层厚度表（热水管道）序号钢管公称直径(外径)保温厚度(mm)外壳厚度(mm)1DN150303.52DN200404.53DN250405.54DN3004065DN3504066DN4005077DN4505088DN5005099DN600551010DN700551111DN800551412DN900551413DN1000571514DN12005715热力管道保温层厚度表（蒸汽管道）序号钢管管径(mm)公称直径(mm)外壳管径(mm)1DN1001083252DN1251333773DN1501594264DN2002195295DN2732505296DN3003266307DN3503777208DN4004267209DN45047882010DN50052992011DN600630102012DN700720112013DN8008201220