316 SS pipe
316 SS pipe
(OP)
We have a specification that calls for 316 SS pipe to be pickled and passivated. Does the piping purchased in North Amaerica pickled and passivated or is this a special order request?
Thanks,
Thanks,
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: 316 SS pipe
RE: 316 SS pipe
We already have a procedure in place after the welding procedure for pickling and passivating, however, that was not my question. I was wondering if piping purchased in NA already came from the factory pickled and passivated?
RE: 316 SS pipe
At one time we had facilities on site to pickle and passivate but quit due to enviromental conerns and the lack of benefits from reworking the piping prior to use.
A large local supplier has no passivated pipe in his inventory. The addition of pickling if available is an adder to the price.
RE: 316 SS pipe
RE: 316 SS pipe
I'm not sure if there are any adavantages other than those you indicated, but once again, that was not my question. I am not specifying piping to be P&P prior to on site construction. I am only asking whether SS pipe manufacturer's P&P the pipe prior to shipment?
RE: 316 SS pipe
YLWEA's point is a good one, since any welding done to P&P pipe will drastically lower the pitting resistance. It is possible, YLWEA, to microalloy the 316L to avoid this phenomenon, but this material is not yet on the market.
RE: 316 SS pipe
RE: 316 SS pipe
RE: 316 SS pipe
Regards,
quadswift