replacement bolts
replacement bolts
(OP)
I need to replace some 5/8-11 SHCS on a 20 year old pressure vessel. What grade bolts must I use? B7?
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RE: replacement bolts
PROBABLY B7 OR B7M OR 320 OR.....
RE: replacement bolts
If the pressure vessel is an ASME vessel and it is registered with the National Board in Ohio, I would purchase the U-1 data sheetfrom them. ( about $25.00 as I recall)
The U-1 datasheet will tell you the original bolt material.
Other materials may be reasonable subsititutions.
As stated by vesselfab, temperature probably controls the material selection.
-MJC
RE: replacement bolts