Qhov hnyav ntawm zinc txheej yog qhia los ntawm tus lej tom qab G. Piv txwv li, G90 qhia tias zinc txheej yog 0.9 oz / ft yog ib qho ntawm cov khoom nrov tshaj plaws galvanized steel carbon ca yob cov khoom muaj.
G90tsis yog galvanizing specification; Nws yog txheej txheej thickness tsim nyob rau hauv galvanizing specification ASTM A653. Qhov kev qhia tshwj xeeb no yog rau kub-dip galvanizing steel ntawv siv cov txheej txheem nruam (high-speed) galvanizing. Lub npe G90 tsuas yog txheej tuab ntawm 0.9 oz/ft2 raws li tau teev tseg hauv A653 thiab sib npaug rau 0.45 oz/ft2 lossis txog 0. 76 mils ib sab (nws yog ib qho tseem ceeb rau lub xeev ib sab vim hais tias oz / ft2 txoj kev yuav siv sij hawm rau hauv kev txiav txim siab cov txheej thickness ntawm ob sab ntawm cov hlau, xws li nyob rau hauv cov ntaub ntawv ntawm cov hlau). Qee lwm cov txheej tuab hauv A653 koj yuav tau hnov txog suav nrog G60 (0.6 oz / ft2) lossis G185 (1.85 oz / ft2).
ASTM A653 thiab ASTM A653 G90
ASTM yog hais txog American Society for Testing and Materials Standards.
A -653 yog ib qho ntawm nws tus lej tus qauv.
ASTM A653 yog tus qauv specification rau kub-dipped galvanized hlau alloy los yog galvanized steel los xij.
ASTM A653 G90 yog hais txog ASTM A653 specification, galvanized txheej code G90 sawv cev rau lub ntsiab lus uas cov sum ntawm ob-sided zinc txheej yog 0.9 oz / ft2 (qhov nruab nrab yam tsawg kawg nkaus tus nqi ntawm peb cov ntsiab lus ntawm ob sab) lossis 0.8 oz / ft2 (qhov tsawg tshaj plaws ib qho taw tes ntawm ob sab) tus nqi).
ASTM A653 G90 yog hais txog cov ntawv hlau galvanized, cov khoom siv qib G90 (raws li ASTM A653 tus qauv), thickness 3.2 hli.
