you should not have procured from unapproved vendors in the first place-since you could be compromising on safety and integrity. or if you feel confident in the quality of the product your organization can offer an extended warranty - probably the client may accept it.
hi
your piping stress engineer should be furnishing you the support reactions. once you have those numbers it is a straightforward simple design. as for the clamps/components themselves why dont you buy off the shelf items like from www.pipingtech.com - or there would be other vendors who offer...
