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Where can i find a chart of all different couplers available?

104 i might be able to get anwer from the manufacturer.

Thank you hokie66 for your quick response

If you any extra information let me know. Or if you know of any substandard ex.

104. Thanks a lot, personally i dont like the idea of not having specific marks on bolt.

I can not find any manufacturer with the marking if you happen to know the markings please let me know

Yeah i was thinking that if that is the manufacturer stamp there is no way to know if the bolts are 8.8 so they should not be use unless the bolts are mark as 8.8 Is that correct?

By the way this bolts came from india, but we found some american manufacturer stamps in other bolt that i did not upload pictures for

And most of them are label as 8.8

No other marking found in the bolts. I have been searching for manufacture stamps, but no luck so far.

Its anyone familiar with this markings. This bolts came label as 4.6 8.8 10.9

Thank you racookpe.

The project where I am working at has not started the construction stage yet. Right now they just started receiving materials to prepare for next year. It is my second week at this site and they have not provided me with the specs. At this time I dont have the information where the material will...

It is adequate to use gaskets mark with dn/pn on flanges with flanges mark with inches/ pressure class?