... reliable manufacturer (a state-owned company) ZRHH STEEL GALVANIZED GRATING 1.Comprehensive type and broadest range in dimension. 1. ... /T4001, ANSI/NAAMM-MBG531, BS4592, AS1657, JS3101 1.3 Grating Dimension Load Bearing Flat Bar sizeThickness≥3mm, depth ≥19mm19X3,19X5 ... Japan, Germany,Switzerland,etc. 4. Capable design can make grating customized according to site requirement. ANY QUESTIONS , PLS FEEL ...