Yes, cast iron round frying skillet pans are safe to use and are actually known for being extremely durable and versatile. They’re great for high-heat cooking, searing, frying, and even baking. However, there are a few things to keep in mind to ensure they stay in good condition and are safe:

1. Proper Seasoning: Cast iron pans need to be properly seasoned to maintain their non-stick surface and prevent rust. A well-seasoned pan can handle high temperatures and adds flavor to food. If your pan starts to rust or the seasoning wears off, you’ll need to reseason it.

2. Handling with Care: Cast iron can get extremely hot, so always use an oven mitt or pot holder when handling the pan to avoid burns.

3. Avoiding Abrasive Cleaning: After use, avoid harsh scrubbing or soaking the pan, as it can damage the seasoning. A little hot water and a stiff brush are usually enough. If you do need to clean it more thoroughly, you can reapply some oil to help maintain the seasoning.

4. Preheating: Cast iron pans should be preheated slowly, especially if they are cold. Rapid temperature changes can cause them to crack or warp.

5. Storing Properly: After use, make sure the pan is completely dry before storing it to avoid rusting. You can also apply a thin layer of oil to prevent moisture from getting in.

So, if you take care of it, a cast iron round frying pan is not only safe to use, but it can last for generations!