Is there an ANSI, ASME or similar standard with torque specifications for bolted flange to flange joints?

Thanks,

Steve

Look here, good chart

http://www.garlock.com/ViewSolutionsPag ... rqueTables

Thank you!!!

How about bolting procedures or piping standards for bolts/hardware. I.E. Washer, lock washer, no washers, locking nuts etc. A project I'm working on, a PM is trying to follow a standard I can not find anywhere.

Thank you,

Steve

Tree,
You asked:
How about bolting procedures or piping standards for bolts/hardware.
I.E.:
- No washers - This is pretty much the standard in the industry when it comes to "Stud Bolts". That is the way you buy them and that is the way you install them. (See this - http://www.google.com/search?q=%22Stud+ ... 08&bih=581)

- Washer - If a washer is used it is very rare.
- Lock washer - This is not done
- Locking nuts - This might be done in some certain specific high vibration cases.

Also, go here to learn about Bolt tightening sequence (note: none of the bolts have washers).
http://www.piping-designer.com/Bolt_Tig ... _Procedure

I'm going to have to disagree you you JOP on the lock washers NOT being used! In general I believe you are correct, but I've run across a major client that wanted "Belleville washers" used on there steam lines. Their steam system was so large that yearly maintenance was not always cared out ...the stud bolts would loosen up and the steam would start escaping and "cut" the face of the flange ...causing more problems. Not sure who came up with the idea but the client now wants these washers used on all steam applications. Here's a link on them http://www.mubea-discsprings.com/disc-s ... pring.html

11Echo,
A "Belleville washer" is NOT a Lock Washer! It is a Concave washer shaped Spring that is used to maintain compression of a bolted joint.

Go here: http://www.keybellevilles.com/apps.html

I have also used them (in a stack arrangement) for "Hold-Downs" on Reciprocal Compressor suction and discharge piping.

JOP I believe techincally you are correct that Belleville washers are "spring type washers", but in function they are a lock washer. I see a number of internet sites listing them as a "lock washers" (http://www.zhenhuastamping.com/products ... 57256.html) ...What ever you want to call them, they TRY to keep nuts from backing off threaded studs so a flanged connection will remain tight. So something to consider in a design, other then just standard studs with nuts. ...My $0.02 anyway.