Dowel waa element ah qamaar ugu badan ee loo adeegsado dhismaha casriga ah. Waxaa loo qaabeeyey sidii ul caag, bir ama nylon a isagoo tip a iyo madaxa ah oo ah qaab ah cap jillaab, giraanta, dhululubo, spherical ama planar gool. dun ama farsamo ballaarinta lagu bixin karaa on jirka ah ee guntinta. Dowels waxaa loo isticmaalaa qalabka godkii, iyo sidoo kale adag, tusaale ahaan, leben, la taaban karo, dhagax, la taaban karo aerated iyo kuwa kale.
The fur qamaar expansible waa qalab ugu kalsoonaan karo oo badanaa loo isticmaalaa fiiriyey. Iyadoo ku xiran qalab iyo dhismaha, element this waxaa loogu talagalay in lagula dhejiyo boolal qoryo iyo boolal in ay salka la sii maroojin. Currently, noocan ah ee articles ka mid ah maaddooyinka kala duwan ka sameeyey, oo waxaa laga yaabaa in caag, bir ama walax kale oo haysta guryaha la doonayo iyo sifooyinka. design ayaa sidoo kale noqon kartaa mid aad u kala duwan. barroosinka Expansion la doorto ku xiran tahay ujeedada taas oo aad rabto in aad u isticmaali. Tusaale ahaan, fur biraha loo isticmaalo oo aad u ballaaran, haddii loo baahdo, in ay mag-xamuulka culus iyo cunfiga dushiisa, sidaas darteed waxaa haboon yahay qaab-dhismeedka dhuuban-deyran ku godan yahay.
Waxa kale oo faa'iido leh iyo wejiyo qaybood ah la oran karo waa barroosinnadii waayo, la taaban karo aerated. Waxa loo isticmaalaa in lala boolal qoryo iyo xubno ka mid ah lagu afjary looxaan. Tani element ammaanka u ogolaanaya in ay bixiyaan qalabka ammaan taam kala duwan, qalabka nadaafada iyo korontada, dhuumaha iyo consoles'ka dusha aerated. Sameeyey barroosinka expansible sida bir oo polyamide tayo sare leh. Qalabkani waxa uu leeyahay dibadda geesaha, in qaab reer muquuninta ah, sidaasna ay ku kordhiyaan dhexroorka ee alaabta laba jeer inta lagu guda jiro dowels maroojin. Waxaa lagama maarmaan ah qaybinta deegaanka shaqada aerated cadaadis la taaban karo sida isku sida ugu macquulsan ee centerline transverse ama ku riixdaan. Qalabkan waxaa ugu fiiriyey bir ka dhigay in uu soo saaro xoog ugu sareeya, ogolaanayo in ay ka heli codsiga ballaaran ee rakibo of daaqadaha, albaabada, qaab-dhismeedka ganaax, iyo sidoo kale wax badan oo kale in ay meelaha la taaban karo aerated. dowel Expansible laga yaabaa in size kala duwan iyo qaabka, kuna waari dhexdeeda, waxaa lala isticmaalaa boolal ama boolal iyo, iyada oo ku xidhan ujeedooyinka.
The fur qamaar expansible leeyahay macdan ah, caag ama nylon ul. Noocan oo kale ah jirka guntinta uu leeyahay farsamo expander ah in inta lagu guda jiro maroojin fur u waasiciyo, oon ku siinaya qardarin ugu adag. element fiiriyey Tani waa la ogolaan karo in ay codsadaan rakibo bir, dhismayaasha alwaax si kala duwan ee meelaha, sida leben ama dhagaxa. Haddii aan ka hadlo codsiyada dibadda, waa ku haboon si ay u isticmaalaan qaybood nylon, iyo gudaha ka samaysan yihiin polypropylene. Gaar ahaan qaab-dhismeedka muxaafidka lagu lifaaqi karaa by qaybood ah macdan ah.