The Speedy Railbeam is a heat-treated aluminium alloy profile with hollow cross-sections that give it high strength under torsion and deflection stresses.
快速铁路是束热处理铝合金型材中空截面，给高强度下的扭转和挠度应力。
3
The invention discloses a method for connecting a circular track with a bearing-railbeam of a polar crane, relating to a polar crane for a nuclear power station.