Zoo hnav tsis kam: Kev sib piv ntawm kev hnav tsis kam ntawm HDPE kav thiab cov kav hlau hlau qhia tau hais tias qhov hnav tsis kam ntawm HDPE kav yog 4 npaug ntawm cov kav hlau. Nyob rau hauv lub tshav pob ntawm cov av nkos conveying, HDPE kav muaj zoo hnav tsis kam tshaj steel kav. Nws txhais tau hais tias cov kav dej HDPE muaj lub neej ua haujlwm ntev dua thiab kev lag luam zoo dua; Kev laus tsis kam thiab kev pab lub neej ntev: cov kav dej polyethylene uas muaj 2-2.5 feem pua ntawm cov pa roj carbon dub sib npaug tuaj yeem khaws cia sab nraum zoov lossis siv rau 50 xyoo yam tsis muaj hluav taws xob ultraviolet; qhov kev sib txuas yog txhim khu kev qha: cov yeeb nkab polyethylene txuas nrog electrothermal fusion, thiab lub zog ntawm kev sib koom ua ke yog siab dua li ntawm cov yeeb nkab lub cev.
