... good acid, alkali, salt and other 80 kinds of acid and alkali chemical corrosion resistance performance,and also ... material, plus carbon black, stabilizers, UV absorbers made of impermeable material co-extrusion. Corrosion resistance, aging resistance, ... 304Elongation at break, %≥700≥7005Elongation at yield, %≥13≥136Angle tear strength, N≥210≥2497Punctured strength, N≥550≥7008Carbon black content, %≥ ...