Steel coil for cables Straight, Smooth, Plain No Impurities,Twist and Piebald EN,ASTM,JIS quality ISO9001 standard DOUBLE-SIDED PLASTIC CLAD STEEL TAPES. No ... seal of tape--before breakdown happens to coated steel tape or damage happens between film and steel, damage never happen to the heat ... --without breakdown12 corrosion resistance, 0.1 mol/L, HCL, 480hgrade8 Steel coil for cables