Coil is a steel or iron plate of fixed thickness produced through hot or cold rolling. Its structure consists of a surface layer, a hard middle layer, and a soft inner layer. Common materials include: 1. Ordinary carbon steel coil (carbon content 0.05-0.25%), which offers excellent weldability and cold formability (elongation ≥30%) and is suitable for furniture and automotive manufacturing, but also has a relatively high magnetic permeability (>5000μ ); 2. Nababa-Alloy High-Strength Coil (Ayang a Pigsa 355-690 MPa), a mangitukon iti nasurok a 50% a napasayaat a panagandur ti paniempo ken espesipiko a nadisenio para iti karga-dagiti estruktura a kas dagiti rangtay ken dagiti barko; 3. Nangato a -pigsa nga asero a plato (ti pigsa ti tensile a dakdakkel ngem wenno kapada ti 780 MPa), a kangrunaan a maus-usar iti riles a panaglabas ken aviation, ngem kasapulan ti nangato a temperatura a panangagas iti ngato ti 1000 a℃para iti panagporma; 4. Stainless steel coil (linaon ti chromium a dakdakkel wenno kapada ti 10.5%), a naandur iti acid ken alkali corrosion (tinawen a corrosion rate .<0.01mm), is a preferred material for food processing equipment.