压力等级Class和公称压力对照表磅级Class150LB300LB400LB600LB900LB1500LB2500LB公称压力MPaMPaMPaMPaMPaMPaMPaMPa公称压力PNPN6PN10PN16PN20PN25PN40PN50PN64PN100PN150PN250PN420阀门公称压力系列MPa(bar)力/厘米21巴(bar)=1
标准
excel标准偏差excel标准偏差函数exl标准差函数国标检验抽样标准表免费下载红头文件格式标准下载
大气压(ATM)=1公斤/平方厘米=100千帕(kPa)二兆帕(MPa)公制与英制换算表(适用于阀门)MetricEquivalentCharts公称通径SizeI!1/81/43/81/23/4111/411/2221/2331/24DN4610152025324050658090100I!56810121416182024262830DN125150200250300350400450500600650700750I!32343642485460647280848896DN80085090010501200135015001600180020002100022002400