... DRAIN GRATING Load Class: EN124 B125,C250,D400 Lenth: 500MM,600MM,1000MM etc. Wide: 100MM,150MM,200MM etc EN1433 Ductile ... iron castings of drainage channel gratingMaterial: Ductile iron GGG50 (500-7)MOLDING ... type: Stainless Steel bolts & nutsframe: Concrete or Polymer Concrete Channel, or PVC Channel.MOLDING BY: DISA MOLDING LINE, 120 box/h.