Was looking at buying BBQ Dragon Cast Iron Griddle for searing on my gas grill:

https://www.amazon.com/BBQ-Dragon-Reversible-Griddle-Grill/dp/B08QPR7K2G/ref=asc_df_B08QPR7K2G/?tag=hyprod-20&linkCode=df0&hvadid=507775397686&hvpos=&hvnetw=g&hvrand=1350744211318646747&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9017287&hvtargid=pla-1212489508278&psc=1


About a third of the way down the page, it says for cooking up to 480 degrees. My gasser will hit 700+. So would this be inappropriate for my intended use? Is all cast iron limited like this or is it just this particular product?