... Anchor bar: R25N, R32L, R32N, R38N, R51N, T76N 2)Anchor coupling: R25, R32, R32, R38, R51, T76 3)Drilling, grouting, anchori ... Self drilingl grouted anchor bolt is applicable to engineerings of railway, highway, tunnel, mine, water ... the substitution.Anchor bar: R25N, R32L, R32N, R38N, R51N, T76NAnchor coupling: R25, R32, R32, R38, R51, T76Anchor nut: R25, R32, ...