I am looking to do some testing on 9-5/8 L80 13% cr Casing. I only need about 4 feet. I was looking for 43.5 ppf but anything heavy would be fine too. Actually if I can not get 13 % cr I would take 9-5/8 L80 with any Chrome percentage. I have been getting replies that chrome casing is no longer available. Is this true? Please Help.