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Re: Galvanizing Bolts

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Hot dip galvanizing is preferred in highly corrosive and very remote 
environments. I've installed and replaced these around coke ovens and 
cintering mills. In electrical power transmission towers the useage is 
standard. I have never installed them on railroad bridges. Replaced 
some rivets on operating RR bridges with A490's black. The Columbia 
River Bridge used rivets and replacement rivets with paint.
   Watch the Class fit with the screw and nut with galvanizing. Needs a 
looser fit with the added coating, plating.

Pax e Gratia
Bob Ross
Robert P. Ross, P.E.
Principal Project Manager
Washington Group International,Inc.
Industrial Processes
17320 Red Hill, Suite 300
Irvine, Ca. 92614 
Mobile 562-254-4604
Office 949-222-3978
FAX 949-222-3985
E-mail: Bob.Ross(--nospam--at)

----- Original Message -----
From: "Raul Labbé" <rlabbe(--nospam--at)>
Date: Wednesday, October 17, 2001 7:23 pm
Subject: Galvanizing Bolts

> Colleagues,
> Galvanizing A 325 bolts, . . . hot-dip galvanizing
> or mechanical galvanizing. When prefering the use
> of which ? Advantages and/or drawbacks of the 
> two procedures ? Are there any cases or situations,
> where hot-dip galvanizing is a must ?
> I'll appreciate any hint on this issue.
> Thanks all
> Raul Labbé

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