Pali maina osiyanasiyana pamtundu wakunja wa bolt hexagonal, mwachitsanzo, amatha kutchedwa bolt wakunja hexagonal, mwachitsanzo, atha kutchedwa kuti bolt wakunja wakunja. Itha kutchedwanso bolt yakunja yamakona. Izi zonse zikutanthauza chinthu chomwecho. Kungoti zizolowezi zathu ndizosiyana. Pambuyo otentha galvanizing pamwamba chithandizo, zotsatira odana ndi dzimbiri zimatheka.
1. mabotolo wamba amagawika a, b ndi c. Zoyamba ziwiri ndi ma bolts oyengedwa, omwe samakonda kugwiritsidwa ntchito. Nthawi zambiri, mabatani wamba amatanthauza ma bolt wamba a Class C.
2. Makatani ofanana a Class C amagwiritsidwa ntchito kwambiri polumikizana kwakanthawi kochepa komanso kulumikizana komwe kumafuna kutulutsa. Ma bolts omwe amagwiritsidwa ntchito popanga nyumba ndi M16, M20 ndi M24. Mabotolo ena osakongola mumakampani opanga amatha kukhala ndi ma diameter akulu komanso zolinga zapadera.
Mkulu mphamvu mikangano nsinga bawuti
3. Zomwe zili ndi mphamvu yayikulu ya bolt ndizosiyana ndi zomwe zimachitika nthawi zambiri. Mkulu mphamvu akapichi nthawi zambiri ntchito kulumikizana okhazikika. Kawirikawiri amagwiritsidwa ntchito ndi M16 ~ M30.