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Re: [PSUBS-MAILIST] Serious Steel


Hi Brent,
        Pipeline steels are from a different series than plate steel (boiler plate) that is normally rolled.  They are tsomething like API 5L X42  and go up to about X100 where the Xxx is the yeild st in ksi.

A hardness test may not tell the whole tale.  Was it used line pipe, if so then you should check if it was used in SOUR GAS (H2S) or not.




Thanks,

James Barlow RET
Sr. Mechanical Designer
New Product Development
BJ Pipeline Inspection
www.bjservices.com/inspection


"Brent Hartwig" <brenthartwig@hotmail.com>
Sent by: owner-personal_submersibles@psubs.org

21/02/2007 09:28 AM

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[PSUBS-MAILIST] Serious Steel





Ya, I should of wrote it as 1.1875"


http://www.frappr.com/?a=viewphoto&id=2628470&pid=4202707

http://www.frappr.com/?a=viewphoto&id=2628470&pid=4202708

Both steel tubes have one seam weld that was ex-rayed.  The tubes are 39" OD and 1.1875" thick steel. Type of steel is unknown at this time, but since they were part of a natural gas pipeline it should be good material. I'm getting a digital metal tester that will tell me what type of steel it is.

The weight is 4100 lb. for the 8.5" section, which comes to 512 lb's per lin. foot. The other tube could be about 11.5' when the rest is removed.

This would be used for a pretty deep diving sub, and would require a hell of allot of hard and soft ballast systems including syntactic foam.  I can get both of these for 10 cents a pound, so I can't really loose.  To have steel of this size and quality rolled, professionally welled, and ex-rayed, would cost a hell of allot more then $400 or $600 I would pay for these.  I'm still debating this in my head so I could use some good imput and a big flatbed truck.


Regards,

Brent


From:  "Paul Kreemer" <paulkreemer@gmail.com>
Reply-To:  personal_submersibles@psubs.org
To:  personal_submersibles@psubs.org
Subject:  Re: [PSUBS-MAILIST] Single minded pursuit
Date:  Wed, 21 Feb 2007 07:24:40 -0800

I think it's 1 and 3/16 thick
On 2/21/07, Joseph Perkel <joeperkel@hotmail.com> wrote:
Brent

3/16" doesn't allow much room for corrosion.

Just finished the detail work for the hull shell, end caps, and rings,

....the works at this point weighs 1880 lbs, 42" diameter, 3/8" thickness,
same length as before.

Yes, using Flamingo bundled with Rhino Marine.

Joe

>From: "Brent Hartwig" <
brenthartwig@hotmail.com>
>Reply-To: personal_submersibles@psubs.org
>To:
personal_submersibles@psubs.org
>Subject: RE: [PSUBS-MAILIST] Single minded pursuit
>Date: Tue, 20 Feb 2007 22:44:21 -0800
>

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