So are you saying that the commission wall thickness recommended minimums correlate to the commission stated proof loads and service loads? So that if these are the commission recommendations, where do some of the figures that we see thrown out come from? Such as no less than .025 or .030, or pressures no more than 5000psi or 8000psi? I've often wondered where these figures come from and not seen a clear explanation, often its " what is used in England" but what I've seen before it what you published .
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