... increase the output. 1.0 SummaryHLB two &Three-wave guardrail cold-formed production line uses continuous production, first punching, then forming, online ... 1Products:High-accuracy two &Three-wave guardrail, and other opening cold bend section steel.2.2Raw material:σs≤345MPa, σb≤560MPa, Yield ... .4Strip steel thickness:2.6-3.6mm (8mm for cold bend section steel)2.5Steel coil spec:ID Φ650-Φ760mm, OD ...