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Dear Steve Jones Thanks for your reply. a) Is the bolting exposed, or unexposed? Exposed b) Are you comfortable with unexposed bolting of low alloy steel in a stainless steel piping system? And Owner wants to apply stainless bolting material to Stainless steel piping applied NACE...

Dear Sirs, Please give recommendation of bolting material considering followings. 1. Low strength bolting materials are limited to class 150 and class 300 in accordance with note 4 of table 1B in ASME B16.5. Quote " These bolting materials may be used with all listed materials but are...

Dear metengr & EdStainless, Thnaks so much for replies. I will study the ferrite No with impact test. Have a nice Day!!

Dear Sirs, Please explain exemption of impact test for austenitic stainless base materials according to ASME B31.3 para 323.2.2.(f). Clause: Impact testing is not required for the following combinations of weld metals and design minimum temperatures: (1) for austenitic stainless steel...