Gb/t4704-2000 2 Ds

2019-08-25View Original

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I have a question regarding this non-metallic gasket: there are two D marks on it, and how can these two D marks be distinguished from each other?

Reply #22019-08-25

Is GBT4704 a gasket standard?

Reply #32019-08-26

Can’t this be solved easily? A gasket simply has two diameters: an inner diameter and an outer diameter. Just modify the control data by yourself. Besides, your standards are way outdated; they were updated a long time ago.

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Gb/t4704-2000 2 Ds

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