Grilling Surface for a DIY Barbecue What is an appropriate semi-permanent surface to use over an open fire barbecue?
I am planning on making a grill rack for my fire pit. My intention is have this surface remain outdoors within the pit. I'm looking for something that wont corrode and that is food safe and something that can handle the high heat of a fire pit. 

I have seen sprays that can be applied. Some are high heat sprays made for grills (exteriors). I'm not sure if these are food safe. Has anyone had experience?

I have also seen food safe anti-corrosive metal sprays, but I cant find information about their heat tolerance.

Thank You for any help.
Almost all of the high heat sprays are not expected to last against direct flame exposure.

I have a outdoor fire pit/BBQ with plain rebar as the grill. Even though it does rust a bit, the exposed rebar is thick enough that it would be decades before I would need to replace it, and the baked on char/oils actually protect the metal quite a bit. The other option would be using stainless steel rods as the grill rack material, then there would be negligible amounts of corrosion.

If i had to remake the grate on my fire pit I would probably use 416 stainless steel rods like these http://amzn.to/2gV2DVD

Also, avoid anything that is chrome or zinc plated. When chrome or zinc gets burnt, they produce toxic byproducts. Just to be safe, I would avoid anything that is plated for your grill grates.