How to best Mark Galvanised Mild Steel to comply with CE regs

[eski1]

Hi

We have a problem with how best to Mark / Identify the steel work which we manufacture ( typically platforms and staircases ) to comply with CE regs.
I believe that all components need to have an identifying mark on them so they can be traced back to the material certificate they were made from etc.
And in un-galvanised mild steel we Hard stamp it which works ok if not a bit laborious . But with Galvanised steel the hard stamp gets lost under the galvanised finish & we have been informed we can't weld on identifying numbers to the steel because this is now not the CE done thing .

So just wondered how other people are getting around this issue .
any help would be appreciated .

Chris

 

[kingnero]

Are you talking about CE marking according to the EN 1090-1 standard?

 

[eski1]

Hi

Yes sorry it is To Comply to CE EN 1090 -1 standard .
Execution of steel Structures

 

[kingnero]

What EXC do you work in?
Components do not need to be marked for EXC2. In higher EXC classes, they can be marked on the plans, not on the actual hardware itself.

CE-marking may be affixed on a separate piece of paper (normally together with the invoice).
See also Guidance Paper D § 2.8

 

[eski1]

Hi Kingnero

Did have a look into it abit more and I believe we are actually bound by the National Structural Steelwork Spec for building construction which says :_
Individual pieces shall be capable of positive identification at all stages of fabrication . Completed components shall be marked with a durable and distinguished erection mark in such a way as not to damage the material. Hard stamping may be used for steel grades up to and including S355 , except where otherwise specified in the project specification.
Where areas of steelwork are indicated on the drawings , or fabrication information, as being unmarked , they shall be left free of all markings and Hard stamping.
In this project we are working on at the moment we have a lot of steel which is going to be galvanised so we want to ideally weld on numbers to identify each beam so when it returns from the galvanising it will aid us in erection of all the pieces .Were just not sure if this welding the numbers on process falls under the ( will damage the material ) umbrella or not.
It is a tried and tested method when dealing with tonnes of steel components to erect & I can only think the larger Steel Erectors are still using this method ?
Chris

 

[kingnero]

I know the EN1090 series quite well, never had to deal with "National Structural Steelwork Spec for building construction" though.

I can tell you the EN1090 requirements, but if the code you refer to has more stringent requirements, apparently these are to be followed. sorry!

 

[JAE]

You might try posting in either of these two forums:

forum330
forum332

There may be others more applicable as well than this one (Structural).


Check out Eng-Tips Forum's Policies here:
faq731-376

 

[racookpe1978]

A good stamp 1/16 inch (1 mm appx) deep should still be readable after galvanizing.

But, more appropriately, if you are still "in fabrication" won't you always meet the " at all stages of fabrication " criteria? Thus, unless the customer requires an id_mark on all of his/her steel after fabrication, you'd be legal.

Now, if for YOUR fabrication and assembly purposes after fabrication, you want to add stamped numbers readable after galvanizing, the 1-2 mm deep stamps will work if your final customer does not find them obnoxious.