兑水 发表于 2009-9-17 20:15:05

ASTM C 585-1990 公称尺寸的管子(NPS系统)刚性热绝缘材料的内...

C585-90(2004) Standard Practice for Inner and Outer Diameters of Rigid Thermal Insulation for Nominal Sizes of Pipe and Tubing (NPS System
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