Straightening feem ntau yog hais txog cov hlau puag ncig uas khi steel purlins, piv txwv li cov hlau ntxhib, txhawm rau txhim khu kev ruaj ntseg ntawm purlins thiab ua rau cov purlins tsis tshua muaj kev ruaj ntseg thiab kev puas tsuaj nyob rau hauv qee yam sab nraud. Muaj kab pheeb ces kaum (piv txwv li 45-degree dabtsi yog khoov ntawm cov ntsia hlau xov) thiab ncaj braces (piv txwv li tag nrho yog ncaj). Tom qab kub galvanizing kev kho mob, antirust nyhuv yog tiav.
1. Nrhiav lub zog siab bolts rau cov qauv hlau. Kev ruaj ntseg thiab txhim khu kev qha fastening daws muaj tam sim no.
2. Tshawb nrhiav qhov zoo tshaj plaws lub zog siab bolts rau steel qauv. Qhov tseem ceeb rau kev tsim kho kom ruaj ntseg.
3. Khw rau lub zog siab bolts los txhawb cov qauv steel. Ua kom muaj kev ruaj ntseg thiab kev nyab xeeb ntawm koj cov haujlwm.
4. Tau txais qhov zoo tshaj plaws siab zog bolts rau steel qauv. Trustworthy fastening daws rau tej kev tsim kho.
5. Kev nqis peev hauv lub zog siab bolts rau cov qauv hlau. Xyuas kom muaj kev ncaj ncees thiab kev nyab xeeb ntawm koj lub tsev ua haujlwm.