... . Temporary support anchor 1. Common groutable anchor bar consists of hollow anchor bolt, anchor plate and anchor nut.It can ... contributes the engagement in R&D, manufacturing and international trade of precision steel tubes, and has more than 3500 tons’ ... 45#, 160Mn, 20GrMo, 35GrMo, 40Gr. The products have the characteristics of small-sized, heavy-wall thickness, high precision, inner or outer ...