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. Love - Alloy High - COIL (Tanjaka 1 {- 690 MPA), izay nanatontosa ny fanoherana toetr'andro 50% ary natao manokana ho an'ny entana sy ny sambo; 3. Avo lenta - teratany vy vita amin'ny vy (henjana lehibe kokoa noho ny na mitovy amin'ny 780 MP3), izay ampiasaina indrindra amin'ny fitaterana an-dranomasina sy ny fiaramanidina, fa mitaky mari-pana avo lenta ambonin'ny 1000 degre-diplaom 4. Stainless Stoel Coil (Chromium votoaty mihoatra ny 10,5%), izay mahatohitra ny asidra sy alkali corrosion (tahan'ny korosion isan-taona<0.01mm), is a preferred material for food processing equipment.