1.steel door door leaf and frame,heat transfer printing 2.0.5-1.0mm thick for door panel 3.1-1.8mm thick for door frame our general spec.for steel security doors:(for reference)1. Steel door with stainless steel doorsill or steel doorsill 2. Cold-rolled steel door leaf and frame with heat transfer-printing, which looks natural wood grain. 3. Infills: Honeycomb material or polyurethane or silicic ...