corrugated steel sheet 1.ISO9001 2.Grade 33-grade 80.;SGLCC SGLCD . 3. ... oiled……APPLICATIONstructural use, roofing, commercial use ,household appliance,industry,family…SPECIALAPPLICATIONwear resistant steel, high-strength-steel plate 2. Corporation introductionHualu Steel Co. Ltd Boxing ...