... , Rail Anchor, Rail Sleeper pad, Rail Tie Plate, Rail Clip, Railway bolt, Gauge Apron, Elastic Bar, Lock Washer, Flat Washer, Elastic ... and calculations for all types of prestressed concrete sleepers from standard versions to sleepers for slab tracks and turnouts up to special ... have gained the approval of customers in worldwide.Standards for Railway Track Parts: TB, UIC AREA, GB, DIN, ASTM/ ANSI, BS ...