... galvanized safety security fence, ISO9001-2000COMPANY,1) Material: Carbon steel or stainless steel2) Bearing bar specification: 20 x 3mm ... Maximum length of black panel: 6, 100mm6) Material: Carbon steel or stainless steel7) Surface treatment: Untreated, paint or hot ... A1011, A569, Q235, S275JR, SS304, SS400, Mild steel & Low carbon steel, etc 5Surface TreatmentBlack, self colour, hot dip galvanized, ...