French manufacturer Sitram produces commercial-grade, stainless-steel cookware for restaurant, hotel, and institutional kitchens worldwide. Sitram is also a favorite of serious home cooks. Sitram Catering pan have a thick copper core sandwiched between 18/10 stainless steel to guarantee even heat distribution. Sitram cookware goes safely into ovens and under broilers and is designed to withstand rough treatment. Its bright, shiny appearance lasts indefinitely. The bottoms don't warp, and this cookware is stain- and corrosion-resistant. There are no inside rivets to clean around, it scrubs up hygienically and painlessly. This is cookware for cooks who value heavy, bang-around durability over fancy design.