ASME 8-1的UHX-10(c) ：The tubesheet shall be uniformly perforated over a nominally circular area, in either equilateral triangular or square patterns. However, untubed lanes for pass partitions are pe
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发表于 2019-8-29 17:54
ASME 8-1的UHX-10(c) ：The tubesheet shall be uniformly perforated over a nominally circular area, in either equilateral triangular or square patterns. However, untubed lanes for pass partitions are permitted.
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发表于 2016-7-9 15:40:45
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