Cov qauv siv feem ntau yog cov hauv qab no:
GB-Tuam Tshoj Lub Tebchaws Txuj Ci (Lub Tebchaws Txuj Ci)
ANSI-American National Standard (American Standard)
DIN-German National Standard (German Standard)
ASME-American Society of Mechanical Engineers Tus Qauv
JIS-Nyiv Tebchaws Tus Qauv (Nyiv Tus Qauv)
BSW-British National Standard
Ntxiv rau qee qhov loj me, xws li lub taub hau tuab thiab lub taub hau sab nraud, qhov sib txawv tshaj plaws ntawm cov qauv hais txog cov ntsia hlau yog cov xov. Cov xov ntawm GB, DIN, JIS, thiab lwm yam yog txhua yam hauv MM (millimeters), hu ua metric xov. Cov xov zoo li ANSI, ASME, yog nyob rau hauv nti thiab hu ua American standard xov. Ntxiv nrog rau cov xov metric thiab American xov, kuj muaj BSW-British tus qauv, thiab cov xov kuj yog nyob rau hauv nti, feem ntau hu ua Whitworth xov.
Cov xov metric yog nyob rau hauv MM (mm), thiab nws lub kaum sab xis yog 60 degrees. Ob qho tib si American thiab Imperial xov yog ntsuas hauv nti. Lub kaum sab xis ntawm American xov kuj yog 60 degrees, thaum lub kaum sab xis ntawm British xov yog 55 degrees. Vim muaj ntau yam ntsuas, cov txheej txheem sawv cev ntawm ntau yam xov kuj txawv. Piv txwv li, M16-2X60 sawv cev rau xov metric. Nws tshwj xeeb txhais tau tias lub nominal txoj kab uas hla ntawm lub ntsia hlau yog 16MM, lub suab yog 2MM, thiab qhov ntev yog 60MM. Lwm qhov piv txwv: 1/4-20X3/4 txhais tau tias British system xov. nws lub ntsiab lus tshwj xeeb yog lub nominal txoj kab uas hla ntawm lub ntsia hlau yog 1/4 nti (ib nti = 25.4MM), muaj 20 hniav ntawm ib nti, thiab qhov ntev yog 3/4 nti. Tsis tas li ntawd, yog tias koj xav qhia American-ua screws, UNC thiab UNF feem ntau yog ntxiv tom qab British-ua screws kom paub qhov txawv ntawm American-ua coarse xov thiab American-ua zoo xov.
Yihe enterprise yog ib lub tuam txhab tshwj xeeb hauv kev tsim cov ntsia hlau amchine ua hauv Tebchaws Meskas ANSI, BS tshuab ntsia hlau, bolt corrugated, indlcuidng 2BA, 3BA, 4BA; German-ua tshuab ntsia hlau DIN (DIN84 / DIN963 / DIN7985 / DIN966 / DIN964 / DIN967); GB Series thiab lwm yam khoom txheem thiab tsis txheem xws li tshuab ntsia hlau thiab txhua yam ntawm tooj dag tshuab ntsia hlau.
Lub sijhawm tshaj tawm: Lub Ob Hlis-09-2023