Kev txhawb nqa hlau yog hais txog kev siv cov hlau xaim hlau, H-Shaped steel, lub kaum ntse ntse steel, thiab lwm yam kom txhim kho kev ruaj ntseg ntawm kev ua haujlwm ua lag luam. Feem ntau, nws yog ib tus tswv cuab inclined rau tus tswv cuab, thiab cov feem ntau cov uas yog herringbone thiab kab hla cov duab. Kev txhawb nqa hlau yog siv dav hauv subways thiab lub hauv paus lub qhov ncauj. Vim tias cov kev txhawb nqa steel tuaj yeem rov ua dua tshiab thiab rov siv dua, nws muaj cov yam ntxwv ntawm kev lag luam thiab kev tiv thaiv ib puag ncig.
Cov tau txais daim ntawv thov
Txhawm rau muab nws yooj yim, 16 hli-tuab txhawb cov kav hlau, cov hlua hlau siv tau rau kev tsim kho cov av ntawm Culvert. Thaum lub sij hawm subway siv dav.
Kev tsim kho cov hlau siv hauv cov kev tsim kho hauv tsev neeg muaj nyob hauv cov chaw ruaj khov thiab hloov pauv tau yooj yim.
Kev qhia tshwj xeeb
Lub ntsiab tseem ceeb ntawm kev txhawb nqa steel yog φو00, φ580, φ600, φо00, φ630, φ800, thiab lwm yam.
Lub Sijhawm Post: Apr-03-2023