... -200mm Hexagon head bolt: Treatment: HDG, Zinc, Black... Carbon steel: Grade/class 4.8, 5.8 ... anchor bolt, nail, other off-standard fasteners and following to the drawers of products, which are ... (Germany), GB (China), UNI, JIS (Japan), ISO and TCVN (Vietnam).1.Application:railways, highways, bridges, plants, ... & South Africa etc. High Strength Bolts and Nuts for Construction Machinery with CE certifation