1. Cov ntsiab lus tseem ceeb
Cov hlau txhawb nqa xa mus rau cov kav hlau, H-puab cov hlau, lub kaum ntse ntse, thiab lwm yam siv los txhim kho qhov ruaj khov ntawm cov qauv hauv engineering. Feem ntau, lawv tseem nyob txuas nrog cov tswvcuab txuas, thiab cov feem ntau muaj herringbone thiab hla daim duab. Tam sim no, hlau yug yog siv dav hauv subways thiab foundation pits. Vim tias cov nyiaj them yug steel tuaj yeem rov qab thiab rov qab siv dua, nws yog kev lag luam thiab ib puag ncig.
2. Cov kab ke ntawm kev thov
1. Yooj yim muab, 16 hli phab ntsa-tuab kev txhawb nqa cov kav hlau, cov kav hlau, thiab cov haujlwm steel siv hauv kev tsim kho ntawm subways yog siv rau kev txhawb nqa. Lawv thaiv qhov av ntawm lub qhov av ntawm txoj kev ua kom chav tsev kom tiv thaiv qhov vau ntawm lub hauv paus pob zeb. Siv dav hauv kev tsim kho.
2. Cov hlau ua txhawb nqa siv nyob rau hauv kev tsim kho hauv av muaj xws li cov chaw ruaj khov thiab cov kev sib txuam yooj yim.
3. Cov Lus Qhia Tshwj Xeeb
Cov ntsiab lus tseem ceeb ntawm kev txhawb nqa steel yog Φ400, Φ580, Φ600, Φ609, Φ630, Φ800, thiab lwm yam.
