Peter
You can also make a mounting bar from SS hand rails. They are a little pricey, but would do the job.
http://www.whitworths.com.au/main_itemdetail.asp?cat=156&item=40857&intAbsolutePage=1
http://www.whitworths.com.au/main_itemdetail.asp?cat=156&item=40842&intAbsolutePage=1
You can also make a mounting bar from SS hand rails. They are a little pricey, but would do the job.
http://www.whitworths.com.au/main_itemdetail.asp?cat=156&item=40857&intAbsolutePage=1
http://www.whitworths.com.au/main_itemdetail.asp?cat=156&item=40842&intAbsolutePage=1