Qhov no yog ib qho cuab yeej siv los txhawb steel formwork thiab compressed ntoo boards, feem ntau rau tensioning. Tighten nrog cov cuab yeej no, tom qab ntawd ruaj ntseg nrog tus npauj npaim buckle. Nws yog ib qho yooj yim rau kev khiav lag luam thiab ntau tshaj kaum npaug ntau npaum li lwm txoj kev tensioning.
Tensioners yog siv rau kev ruaj ntseg cov khoom thaum lub sij hawm kev thauj mus los, txav, thauj khoom, los yog cia. Lawv muaj kev ruaj ntseg, txhim khu kev qha, hnav, yooj yim rau kev khiav lag luam, thiab tiv thaiv cov khoom los ntawm kev puas tsuaj ib zaug.
