Yuav ua li cas yog lub kaum steel specifications feem ntau qhia?

Lub kaum sab xis stepifications yog denoted los ntawmsab ntev (a) × kev thickness (t)Hauv cov millimeters, feem ntau ntxiv ntxiv los ntawm qhov ntev thiab qhov hnyav rau ib lub 'meter'. Piv txwv li, "∠50 × 5" txhais tau tias sib npaug {{3/ose} Sab Sab Lub Hlau nrog 50mm sab ntev thiab 5 hli thickness; "∠75 × 50" Qhia txog qhov tsis txaus ntseeg - sab hnub qub (75 hli ntev sab, 6mm thickness). Ib qho sib npaug sib luag {14 {}} sab specifications khwv tau ntau ntawm ∠200}}}}, hnyav} × 3 rau × 3 rau × 12. Ntev yog 6m, 9m, lossis 12m (tsau × ×} t × (1 (ib {= ntev sab, b=luv sab).