| 摘要 |
FIELD: construction.SUBSTANCE: sleeper comprises teeth on their foot, which are formed from sleeper material in cast grooves by means of their hardening. Teeth are made so that in the cross section they have an arbitrary shape with equivalent diameter from 5 to 100 mm, and are arranged from each other with a gap from 0 to 150 mm, and have height from 10 to 150 mm.EFFECT: reduced process operations in manufacturing of a sleeper and lower cost.5 dwg |
