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Old 06-14-2016, 08:37 AM   #21
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Originally Posted by prairieschooner View Post
Here in California one of mine was refused when the stamped year was over 12 years old must have been one of the 12 year tanks, they are Worthington. Not sure about the steel tanks but I would bet most of the aluminum tanks would be in that 12 year period. Here is a link that helps explain;
I just had my two 30 year old Worthington alloy tanks recertified this year...
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Old 06-14-2016, 11:16 AM   #22
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Opps. I goofed up. This is in the United States. Canadian regulation is different. I don't recall how it differs, however.

Originally Posted by eubank View Post
New cylinders have been hydrostatically tested at the time of manufacture and are, therefore, good for 12 years beyond the date stamped into the collar.
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Old 06-14-2016, 01:41 PM   #23
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My 30 and 40 lb. tanks were recertified for second time and 30lb. were 49 yrs. old. 40lb. 40 yrs. old. Plant stated as long as no damage or welding aluminum tanks only visual inspection. Steel much dif. plus rust and other issues when recert. and life span less than aluminum. Plant operator stated 12 yrs. max for steel would not cert past 12 yrs. because of liability. Only reason recert. this yr. some one noticed dates.
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