Cov txiv ntoo tig tautsim los rau cov hlua khi hauv cov qauv formwork nyuam qhuav nkag mus rau hauv kev xa tawm loj. Kev siv cov qauv fastening rotary, cov notxiv ntooyog sib xws nrog D7-D22 cov hlua khi thiab D70-D110mm formwork phaj txoj kab uas hla. Lub rotary fitting tsim ua rau kev ua haujlwm yooj yim dua, nrog rau kev sib phim raug rau cov formwork panels txhim kho los ntawm 20% piv rau cov tsoostxiv ntooLawv hnyav li ntawm 0.18kg txog 0.82kg txhua lub, ua rau cov neeg ua haujlwm tsim kho yooj yim teeb tsa thiab tshem tawm.

Txog niaj hnub no, muaj ntau tshaj 12,000 pawg ntawm cov txiv ntoo no tau siv rau hauv cov haujlwm ua vaj tse prefabricated hauv North China. Hauv kev tsim kho, lawv cov qauv tig txo lub sijhawm khi rau ib lub vaj huam sib luag formwork los ntawm kwv yees li 15 vib nas this. Cov xov uas tsis yooj yim hnav txhawb nqa ntau tshaj 30 lub voj voog rov siv dua, txiav qhov poob ntawm cov khoom thaum lub sijhawm rhuav tshem formwork los ntawm 8% thiab tag nrho txhawb nqa kev ua haujlwm ntawm cov txheej txheem sib dhos formwork los ntawm kwv yees li 13%.