Hom fasteners no, zoo li cov ntsia hlau, siv yuav luag txhua qhov chaw. Nws tseem nyuaj rau xav txog seb lawv tuaj yeem hloov pauv li cas yog tias tsim nyog. Cov xov muaj zog thiab ntse tso cai rau cov fasteners yuav tsum tau screwed rau saum npoo ntawm cov khoom ntawm ntau hom thiab thicknesses yooj yim heev. Ib lub ntsia hlau tsis muaj dab tsi ntau tshaj li tus pas nrig nrog cov qauv txheej txheem thiab cov xov sab nraud, feem ntau nws yog siv los txuas ntau yam qauv hlau. Txhua qhov chaw ntawm hom no tau muab faib ua mounting thiab installation, nyob ntawm tus txheej txheem ntawm daim ntawv thov.
Tus kheej tapping screws tau dav siv, lawv tau siv ntau hauv kev lag luam, tab sis cov fasteners no feem ntau xav tau hauv kev tsim kho tshuab. Kev tsim kom zoo, cov nqi qis, kev siv yooj yim nce qhov kev thov rau cov ntsia hlau. Lawv tuaj yeem ntsia tau rau hauv ib qho, txawm tias nyuaj rau qhov chaw ncav cuag, kev siv cov txiv ntoo yog xaiv tau. Tsis tas li ntawd, tsis tas yuav tsum tau ua lub qhov, ncaj qha thaum lub sij hawm sib dhos, nws yog tsim los ntawm nws tus kheej.
Feem ntau cov ntsia hlau yog tus kheej tappingsiv los txuas cov qauv ua los ntawm cov ntaub ntawv xws li cov hlau me me, aluminium thiab tooj liab alloys, yas. Raws li lub npe, koj yuav tsum tsis txhob xav tias cov ntsia hlau tuaj yeem txiav cov khoom uas nws txuas. Nws tsuas tuaj yeem ua rau cov yas deformation los ntawm nias rau hauv hlau lossis yas.
Standards GOST 1478-93 thiab GOST 2702-93 tswj cov khoom zoo thiab cov tshuab tsim khoom. Specifications rau galvanized self-tapping screws nrog countersunk thiab semi- countersunk taub hau yog nyob rau hauv cov nqe lus dav dav. Phillips spherical taub hau screws kuj muaj. Tus kheej-tapping ntsia hlau muaj ob peb hom, ntxiv rau cov uas tau teev tseg, lawv kuj pom muaj lub taub hau zoo li tus, flange, lub hnub qub tsav. Muaj tseeb, peb qhov kawg screws tsis siv nyob rau hauv Lavxias teb sab Federation, vim hais tias tsis muaj cov qauv rau lawv. Txawm hais tias nyob rau hauv cov nqe lus ntawm kev tsim zoo, lawv muaj ntau yam kev vam meej tshaj tus qauv screws.
Tus kheej tapping ntsia hlau uas yog ib hom tshiab tsis tuaj yeem siv hauv Lavxias ntau lawm. Yog vim li cas nyob rau hauv qhov sib txawv ntawm cov xov ntau thiab tsawg. Qhov tseeb yog tias cov ntsia hlau-shaped fasteners nrog lub hnub qub-shaped tsav, lub taub hau zoo li lub taub hau thiab flange, txawm hais tias lawv muaj ntau dua li cov khoom siv hauv tsev, lawv muaj cov xov sib txawv kiag li. Tsis tas li ntawd, lawv tsis ua raws li peb tus qauv tam sim no hauv kev quab yuam uas tswj cov khoom zoo thiab cov cuab yeej tsim khoom. Qhov tsim thiab qhov loj ntawm cov ntsia hlau kuj tsis ua raws li cov qauv Lavxias.
Tus qauv thoob ntiaj teb ISO 1478-2005 twb tau txais daim ntawv tshiab, suav nrog kev tsim khoom thiab siv cov ntsia hlau nrog qhov sib npaug. Tej zaum tsis ntev xws li ib tug self-tapping ntsia hlau yuav tshwm sim nyob rau hauv Russia, thiab cov qauv tseem ceeb yuav tau txais yuav. Nws tau ntev tau npaj los hloov kho txhua tus qauv Lavxias kom ua raws li cov qauv thoob ntiaj teb.
Thaum xaiv cov ntsia hlau, nws yog qhov tsim nyog los tsim cov khoom ntawm cov qauv kom nrawm, nws cov tuab, nrog rau qhov xav tau qhov tob. Nyob ntawm seb hom txheej txheej, txhua tus kheej tapping ntsia hlau tau muab faib ua galvanized, galvanized thiab dub.
