Dab tsi yog Hollow Section?
Ib feem hollow (tseem hu ua hollow structural section, HSS) yog ib hom hlau profile uas muaj ib qho hollow, tubular cross-section. Tsis zoo li cov hlau khov kho, cov feem hollow yog lub teeb tab sis muaj zog, ua rau lawv zoo tagnrho rau kev siv hauv kev tsim kho thiab kev siv tshuab.
Hom Hollow Sections
Cov seem hollow muaj peb lub duab tseem ceeb:
| Hom | Duab | Kev Siv Feem Ntau |
| Seem Hollow Voj Voog (CHS) | Lub raj kheej kheej | Cov kav dej, cov kem, cov thav duab tsev cog khoom, cov ntaiv tes tuav |
| Seem Hollow Square (SHS) | Lub raj plaub fab | Cov thav duab, tshuab, kev tsim kho, cov nqaj txhawb nqa |
| Lub voos xwmfab Hollow Section (RHS) | Lub raj plaub fab | Cov qauv tsim, rooj vag, cov khoom siv hauv tsheb |
Cov Txheej Txheem Tsim Khoom
1. Kev Tsim - Cov ntawv hlau raug dov ua duab (puag ncig, plaub fab, lossis plaub fab).
2. Vuam - Cov npoo yog welded (piv txwv li, ERW, SAW, lossis cov txheej txheem seamless).
3. Kev Loj thiab Kev Tiav - Txiav kom ntev, ntxuav, thiab pleev xim (galvanized/pleev xim yog tias xav tau).
Lub sijhawm tshaj tawm: Lub Rau Hli-24-2025