1. Imperial txheem
Imperial steel yeeb nkab yog txhais los ntawm lub peev "DN." Qhov ntau thiab tsawg thiab siv DN15 (4-nti yeeb nkab), DN22 (1-nti yeeb nkab), DN2-nti yeeb nkab), DN2-nti yeeb nkab), DN2-nti yeeb nkab), DN100 (1-nti yeeb nkab), DN125 (5-nti yeeb nkab), DN150 (6-nti yeeb nkab), DN200 (8-nti yeeb nkab), thiab DN250 (10-nti yeeb nkab). Piv txwv li, DN25 (25 mm) dej yeeb nkab yog sib npaug rau cov yeeb nkab imperial 1-nti, tseem hu ua 8-nti yeeb nkab. DN15 DEJ YEEB NKAB yog sib npaug rau cov yeeb nkab Imperial 1/2-nti, tseem hu ua 4-nti yeeb nkab. Piv txwv li, cov yeeb nkab dn20 yog ib qho 3/4 "tus qauv Askiv, tseem hu ua 6-nti yeeb nkab ua ntej kev ywj pheej txav.
2. Cov Qauv Txheej Txheem Thoob Ntiaj Teb
Thoob ntiaj teb tus qauv steel yeeb nkab yog raws li kev faib ua nti rau hauv qhov chaw me me. Cov lus qhia tshwj xeeb muaj 1/8, 1/4, thiab 3/4 ntiv tes, sib npaug rau cov neeg nyiam 1-nti thiab 7-nti. Qhov ntau thiab tsawg yog qhia raws li 1/16, 1/32, thiab 1/64, tseem nyob hauv Inches. Yog hais tias tus lej thiab cov lej muab txo qis (piv txwv li, tus lej yog 2, 4, 8, lawv yuav tsum raug txo kom tsawg.
3. Cov yeeb nkab hlau loj
Qhov hnyav calculation cov cai rau ntau hom hlau cov yeeb nkab sib txawv. Hauv qab no, Miagoo yuav luv luv qhia ntau cov kev ntsuas phaus feem ntau:
Hloov cov hlau hnyav (kg)=0.00617}} u x intria x lub taub x ntev;
Square steel nyhav (kg)=0.00785}} x sab dav X sab dav dav X xub ntiag;
Ca Steel Hlau Nyhav (kg)=0.00785 x thickness x ncej x ncej.