谢谢各位回复。特别是4楼的TX。: }* v5 X6 w1 @+ H$ w; L% ~4 @
不过我对于这个是绝对的门外汉。可能是我自己理解错了。0 D3 m$ O1 }8 ~' Z3 K' }
客户的要求如下： ' e. G8 F e# F“Finned Tubes size 3/4 inch O.D., with average wall thickness of 0.065 0 o) m4 Z* R+ N( j( }( [2 Y8 Jinch on the bare tube and average wall thickness under the fin of 0.042 inch. - G: h; r' P3 X3 ], _( I
) J; A t+ h5 r, f9 s3 bWe require a minimum of 27 fins per inch and the average height of the fin is 50 mils + 3 mils. ”* l: @4 d9 w+ v7 R X7 |' F
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“and average wall thickness under the fin of 0.042 inch. ”本来我以为是翅片的厚度，经4楼的提醒，看来是我把这句话给理解错了。
发表于 2009-7-23 23:03:11
楼主