回复 1# 憨老马
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在网上看到这个:/ m# v, \. Q' L0 F) L! B' m# D
SMS fittings are named from Swedish Dairy Standard ( Svensk MeieriStandard ) ( V& c8 B, P' m! S4 r8 J% X
There are a multitude of variants in pipe-clips and clamps and couplings and unions that is commonly used all over Europe. / i$ {0 X: Q+ G6 F
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There are several other standards, DS (Danish Standard) and the Germans have several DIN standards such as DIN 11851 & 11887 and probably many others.
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供参考。 |