The only hard pipe cases I've ever seen were the one's that meerschaum pipes usually come in. I'm not sure what kind of lifestyle you live, to be worried about breaking a pipe. I can suggest this, try looking in a sporting goods store or maybe a place like Best Buy... I remember buying a waterproof ballistic case to keep my old PDA in years ago, it was big enough to fit a pipe in.
You might try something like this:
http://www.fieldtexcases.com/store/merchant.mvc?Screen=PROD&Store_Code=CASES&Product_Code=988-20301