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10秒装修报价 装修要花多少钱?获得精准报价,省钱30%
168211
元
材料费:77201元
人工费:86544元
设计费:1760元
质检费:2706元
dn200阀门尺寸DN200--公称通径200mm;Z--闸阀;4--法兰连接;5--阀杆非升降式地方(暗杆)楔式单闸板;T--密封面材料:铜合金;16--公称压力,MPa;(L)---螺纹连接中口,标冠阀门推举110的是DN100的110是PPR管的外径尺寸DN200是正规尺寸弯头用110200阀门用100200
国标dn20090度弯头1.5d中心到端面尺寸是305MM,参见GB/T12459,望采纳
DN200标准弯头变成直管,直管长度是:弯头的弯曲半径X1.
57.其中:
1、弯头的弯曲半径通常按1.5D计算,D指的是公称直径。2、1.57是弯管的火口长度系数。数值带进计算公式:200mmX1.5X1.57
471mm这样计算的DN200标准弯头变成直管