... Surface Treatment: regular & minimum spangle,oiled & dry,chromated,non-skin pass,skin pass7. Steel Grade: SGCC, SGCD, CS,FS,SS,DX51D+Z ... 9. Package: full wrapped with anti-damped paper inside, iron sheet wrapped outside, and bundled by iron strips 10. Application: ... , steel profiles for wall partition, T-bar, studs, fireproof door, air conditioning duct and home appliance SHIJIAZHUANG HUAZE TRADING CO ...