I work at Weapon*R and i just logged in to clear up a few things.

Our Welds Are Not "Back Purged".
Our Welds are Wire Fed, Stainless 304 Steel Wire.
Our Materials ARE " 304 From Flange to Flange ".

Notes:
These are some things " I " have encountered in my racing experience.
* Steel or Coated steel will Rust regardless.
* Steel or Coated Steel will Rust faster is wrapped.
* Some companies Coat their headers to cover up their sloppy welds.
* Some Companies Use Steel Chrome PLated Flanges with stainless tubes, and still say it's a stainless header.
* Back Purging headers before/ after / and during welding headers does help, but not for a header at this price.
* By the look of the MSDS header it is also MIG WELDED and Not back purged.


We do Tig Weld & Back Purge our " RACE HEADERS ".
We do build and support race cars in the Asia Supercar Series, and now the USTCC..

You can go to our website and see some of the racecars or streetcars we helped build or have built.

If anyone has any questions, please feel free to email me.
thank you.

Leo Now
Weapon*R USA
R&D FAB SHOP Manager.