... &Three-wave guardrail cold-formed production line uses continuous production, first punching, then forming, online cutting production mode. In PLC control multipoint ... two &Three-wave guardrail, and other opening cold bend section steel.2.2Raw material:σs≤345MPa, σb≤560MPa, Yield strength ... 560MPa, galvanized plate, color sheet.2.3Strip steel width:482-750mm2.4Strip steel thickness:2.6-3.6mm (8mm for ...