Raws li ib qho tseem ceeb hauv kev sib txuas ntawm cov tshuab, kev xaiv ntawm fasteners 'tsis yog qhov tseem ceeb rau kev ua kom ruaj ntseg thiab kev nyab xeeb ntawm kev sib txuas.
1. Khoom npe (Standard)
Lub npe khoom fastener yog ncaj qha cuam tshuam nrog nws cov qauv thiab kev siv scenario. Rau cov fasteners uas ua raws li cov qauv tshwj xeeb, daim ntawv lo rau tus lej tus qauv tuaj yeem cuam tshuam txog lawv qhov kev tsim thiab kev ua tau zoo. Thaum tsis muaj cov qauv qhia meej, qhov tsis yog-tus qauv (tsis yog tus qauv) yuav tsum tau kos duab kom ntxaws los qhia txog lawv qhov ntev thiab cov duab.
2. Cov lus qhia tshwj xeeb
Qhov tshwj xeeb ntawm fasteners feem ntau muaj ob ntu: txoj kab uas hla ntawm cov xov thiab qhov ntev ntawm cov ntsia hlau. Cov metric thiab American systems yog ob lub ntsiab lus tshwj xeeb. Metric screws xws li M4-0.7x8, qhov twg M4 sawv cev rau cov xov sab nraud ntawm 4 hli, 0.7 sawv cev rau lub suab, thiab 8 sawv cev rau qhov ntev ntawm cov ntsia hlau. American screws xws li 6 # -32 * 3/8, qhov twg 6 # sawv cev rau sab nraud ntawm cov xov, 32 sawv cev rau cov xov tooj ntawm ib nti ntawm xov ntev, thiab 3/8 yog qhov ntev ntawm cov ntsia hlau.
3. Khoom siv
Cov khoom ntawm fasteners txiav txim siab lawv lub zog, corrosion kuj, thiab kev pab lub neej. Cov ntaub ntawv muaj xws li carbon steel, stainless hlau, stainless hlau, tooj liab, txhuas, thiab lwm yam Carbon steel yuav muab faib mus rau hauv tsawg carbon steel, nruab nrab carbon steel, siab carbon steel, thiab hlau alloy. Nws yog ib qho tseem ceeb heev uas yuav tau xaiv cov khoom tsim nyog raws li qhov kev thov thiab qhov yuav tsum tau ua.
4. Qib muaj zog
Rau carbon steel fasteners, qib lub zog qhia txog lawv lub zog tensile thiab lub zog tawm los. Feem ntau muaj xws li 4.8, 5.8, 6.8, 8.8, 10.9, 12.9, thiab lwm yam. Lub zog muaj zog screws, xws li cov khoom ntawm qib 8.8 lossis siab dua, feem ntau yuav tsum tau quenching thiab tempering kho cua sov los txhim kho lawv cov khoom siv kho tshuab.
5. Kev kho deg
Kev kho deg yog tsuas yog tsom rau kev txhim kho corrosion thiab zoo nkauj ntawm fasteners. Kev ua cov txheej txheem xws li blackening, galvanizing (xws li xiav thiab dawb zinc, zinc dawb, thiab lwm yam), tooj liab plating, nickel plating, chrome plating, thiab lwm yam. kev pab cuam lub neej ntawm fasteners.
Nyob rau hauv luv luv, thaum xaiv fasteners, nws yog ib qhov tsim nyog yuav tau xav txog tej yam xws li cov khoom npe (tus qauv), specifications, cov ntaub ntawv, qib zog, thiab kev kho deg kom ntseeg tau tias lawv ua tau raws li cov kev cai siv thiab muaj kev ua tau zoo thiab lifespan.
Post lub sij hawm: Aug-28-2024