Is this a nonstick coating?
No. Nitriding should be described as a surface treatment route, not as PTFE, ceramic coating, or a maintenance-free nonstick layer.
Is carbon steel the base material?
For many projects, yes. Carbon steel or iron is the base material, while nitriding is the surface treatment that affects surface appearance, care notes, inspection, and packaging claims.
What should buyers confirm before sampling?
Confirm wok type, diameter, base material, bottom type, handle, lid, surface treatment expectation, packaging, care card, target market, quantity, and sample deadline.
What quality checks matter?
Surface consistency, rust spot inspection, bottom flatness, handle fixing, lid fit, packaging moisture protection, and care instruction accuracy are important checks.