[AT] Chain grades

[Dean VP]

Bob:

My understanding is that a chain has to be visibly marked Grade 70 in order
for it to qualify for a grade 70 Working Load Limit when using it for load
tie downs. The following web site has some good info on chain
specifications:

http://www.cmindustrial.com/products/chainproducts.asp?category=15

I believe chains are required to be marked grade 70 when used as tie downs
for any commercial hauling. Here in WA, for private hauling, if the chains
are not marked grade 70, the WA DOT will downgrade the chains WLL to the
lowest rating for that size chain to determine if you have adequate
restraint on the load. 

Grade 80 and 90 chain is specified for use in vertical lift applications. 

Dean A. Van Peursem
Snohomish, WA 98290

I'm a walking storeroom of facts..... I've just lost the key to the
storeroom door 


www.deerelegacy.com

http://members.cox.net/classicweb/email.htm



-----Original Message-----
From: at-bounces at lists.antique-tractor.com
[mailto:at-bounces at lists.antique-tractor.com] On Behalf Of Bob W
Sent: Thursday, February 03, 2005 4:02 PM
To: Antique tractor email discussion group
Subject: [AT] Chain grades

I just got some chain from a friend that did not want it (50 feet for free).
It had been given to him. My question is how can I tell what grade it is?
There are no markings on it, it is shiny almost to shiny to be galvanized.
He seemed to think it was grade 80, but I think that is what he was told. It
would be great if it was grade 70 or 80 then I could use it to tie down my
8N to the trailer (tractor reference). It is 5/16" chain. I was under the
impression the grades 70 and 80 were stamped.

Thanks
Bob W [FL]
1950 8N

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