Txheej txheem cej luam ntawm dej- raws li tus cwj mem

Dej{{0}} cov cwj mem ballpoint kuj hu ua ballpoint cwjmem lossis cwj mem ballpoint. Pob-point cwjmem uas nws cov thoob thiab npog yog ua los ntawm cov yas txhaj tshuaj molding yog hu ua tag nrho cov -plastic ball-point cwjmem; cov uas nws cov thoob thiab npog yog ua los ntawm stainless hlau yog hu ua semi-steel pob-point cwjmem; cov uas nws cov thoob thiab npog yog ua los ntawm stainless hlau yog hu ua tag nrho cov -steel pob- cwj mem. Cov hom yas tag nrho yog ib qho - siv sijhawm, uas yog, nws tau muab pov tseg thaum siv tus cwj mem; cov semi- steel hom thiab tag nrho {{10}} hom steel feem ntau siv cov qauv hloov pauv tau. Lub nib ntawm lub pob-point cwj mem tau muab faib ua ob hom: hom cannonball thiab koob raj hom, uas yog ua los ntawm tooj liab alloy, stainless hlau lossis engineering yas. Cov pob no feem ntau yog ua los ntawm stainless hlau, cemented carbide los yog alumina. Txoj kab uas hla ntawm lub pob nrog cov ntawv sau nruab nrab yog 0.7 hli, thiab txoj kab uas hla ntawm lub pob nrog cov ntawv sau zoo yog 0.5 hli. Muaj ob hom dej cia: fiber ntau ntim dej cia thiab tsis muaj fiber ntau ntim dej cia. Cov xim ntawm tus number case yog liab, xiav, dub, ntsuab thiab lwm yam. Lub pob-point cwj mem muaj cov yam ntxwv ntawm ob qho tib si tus cwj mem thiab cov roj-raws li pob-point cwj mem, nrog cov ntawv sau du thiab du thiab txawm tias kab. Nws yog ib qho cuab yeej sau ntawv zoo tagnrho.