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Re: Welding question (for steel that's to be galvanized)

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I've stitch welded many galvanized shelf angles over the years.
The main problem that can happen is that the pickling solution can get
between the angle and the web then leak out over time and create streaks.
I've been told that the corrosion protection is not compromised, just the
aesthetics.

Your best bet is to talk with the actual galvanizer for their
recommendations.

You have to be careful when seal welding that the enclosed area doesn't
exceed a certain square inch amount or pressure can build up and distort or
explode.

In your situations, I'd stitch the shelf angle and weld all around the angle
to the base plate.

Rich
----- Original Message -----
From: "Clifford Schwinger" <clifford234(--nospam--at)yahoo.com>
To: <seaint(--nospam--at)seaint.org>
Sent: Friday, May 02, 2003 12:53 PM
Subject: Welding question (for steel that's to be galvanized)


> I seem to remember a rule that says "welded steel
> members which will be hot-dip galvanized must be
> welded all around".  Presumably this is to avoid
> having crevises in joist into which the galvanizing
> might not be able to penetrate and to avoid having
> crevises that might allow water to penetrate and be
> trapped.
>
> Is this considered good practice?  Is this rule stated
> anywhere?
>
> Here are two examples of what I'm referring too:
>
> 1. Continuous brick shelf relieving angle welded to
> the face of an HSS beam. (Use continous weld all
> around instead of stitch welds?)
>
> 2. Small base plates welded to vertical L4x4 corner
> posts on a galvanized steel platform. (Use continous
> weld all around instead of a single weld on one side
> of each leg of angle.
>
> (Does anyone know of any good sources of information
> on the web that give guidelines or tips about things
> like this for galvanizing?)
>
> Any advice would be most appreciated.
>
> Cliff Schwinger
>
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