... .galvanized 3.powder coated 4.special shape Galvanized Highway Guardrail Shandong Zhongguan Group is located in Guan County, ... galvalume steel sheet in coil, prepainted steel sheet in coils, corrugated steel sheet, cold rolled steel sheet in coils, and highway guardrail. ... traffic and work areas,so the rate of accident will be reduced Guardrail Highway guardrail Q235, including corrugated beams, posts, ...