ASTM Equal Angle HlauFeem ntau hu ua lub kaum sab xis hlau, yog ib lub steel ntev nrog ob sab perpendicular rau ib leeg.Muaj lub kaum sab xis steel thiab lub kaum sab xis tsis sib xws.Qhov dav ntawm ob sab ntawm lub kaum sab xis steel sib npaug.Cov lus qhia tshwj xeeb yog qhia hauv mm ntawm sab dav × sab dav × sab thickness.Xws li "∟ 30 × 30 × 3", uas yog hais tias, sib npaug lub kaum steel nrog sab dav ntawm 30 hli thiab sab thickness ntawm 3 hli.Nws kuj tuaj yeem qhia los ntawm tus qauv.Tus qauv yog centimeter ntawm sab dav, xws li ∟ 3 × 3. Tus qauv tsis sawv cev rau qhov ntev ntawm qhov sib txawv ntawm ntug thicknesses nyob rau hauv tib tus qauv, yog li lub ntug dav thiab ntug thickness qhov ntev ntawm lub kaum sab xis steel yuav tsum tau sau tag nrho rau hauv daim ntawv cog lus thiab lwm yam ntaub ntawv kom tsis txhob siv tus qauv ib leeg.Qhov tshwj xeeb ntawm kub dov sib npaug lub kaum sab xis steel yog 2 × 3-20 × 3.