(1) Cov Khoom Siv Hlau Hlau:
Cov Khoom Siv Cov Hlau Sib xyaw suav nrog cov kav dej seamless, kub roj galvanized, cam khwb cia kav hlau, nrum cov kav hlau, lossis cov yas roj hmab ntxiv (GRP) kav dej. Rau txhuas alloy lined composite kav, txhuas cov ntaub ntawv xws li 6063 yog siv. Cov kav dej hlau no yuav tsum ua raws cov qauv hauv tebchaws, piv txwv li, kub-dip galvanized steel kav yuav tsum tau ua kom tau raws li cov cai ntawm GB / T 3091.
(2) Cov Khoom Siv Yas Yeeb:
Cov yeeb nkab yas uas tau raug xaiv los ntawm cov plastics xws li cov polyethylene random random random random random random random random randomon, thiab polyethyleneed reged kub (PE-RT). Cov kav dej yas yuav tsum ua raws li lawv cov qauv txheej txheem, piv txwv li pipes pipes yuav tsum ua raws li cov cai ntawm GB / T 18742.2.
