[PSUBS-MAILIST] K-250

Daniel Lance via Personal_Submersibles personal_submersibles at psubs.org
Fri Jun 13 12:04:46 EDT 2014


I wouldn't consider using anything less then  516 gr 70 when building a
pressure hull . Also make sure you ask for the paper work to go with it
with the proper heat numbers stamped on all the hull sections. I would also
follow up by sending a coupon from each piece to an independent lab for
verification .
Dan Lance
On Jun 13, 2014 9:15 AM, "Daniel Lance" <lanceind at gmail.com> wrote:

> 36 " in diameter . The original K250 plans specified A36 . In the 1960s or
> 1970s that was acceptable when steel was domestically produced. Most A36 is
> imported today and of questionable quality .
> On Jun 13, 2014 8:37 AM, "swaters via Personal_Submersibles" <
> personal_submersibles at psubs.org> wrote:
>
>> The K-250 hull is 4 foot long and 30" OD out of 1/4" ASME 516 gr70
>> correct?
>> Thanks,
>> Scott Waters
>>
>>
>>
>>
>> Sent from my U.S. Cellular© Smartphone
>>
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>>
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