Cov khoom dab tsi yog Jis G3454 Yeeb
JIS G 3456 yog cov ntaub ntawv pawg tau hais los ntawm tus qauv Japanese muaj cov qauv (JIS) thiab hais txog cov roj hlau steel rau cov khoom kub siab. Cov yeeb nkab steel no tsuas yog siv rau cov ntawv luam cov tshuab nrog qhov kub tshaj 350 degree.
JIS G 3456 Cov kav dej carbon pipes muaj ob peb qib, suav nrog STT370, stpt410, stpt480.
Raws li qhov hloov tshiab tshaj plaws, JIS G 3456: 2024, cov yeeb nkab steel yog tsim nyog rau cov raj nrog 660.4mm thiab feem ntau yog siv rau cov chaw ntsuas hluav taws xob hauv qhov chaw siab.
