construction bolts and nut Class: 10.9, 12.9 grade Material: ... threaded rod, anchor bolt, nail, other off-standard fasteners and following to the drawers of products, which are according ... ), DIN (Germany), GB (China), UNI, JIS (Japan), ISO and TCVN (Vietnam).1.Application:railways, highways, bridges, plants,etc. 2 ... Company part equipment as follows: construction bolts and nut with CE certifation