Manhole
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Siab Manhole * Khoom siv: ALSL304/316L
Daim ntawv thov
Lub siab hom txiv neej lub qhov yog tsuas yog siv rau cov hlab ntsha siab nyob rau hauv cov zaub mov, dej haus, tshuaj, thiab lwm yam.
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Round Manhole * Khoom siv: AISI304/316L
Lub manhole feem ntau yog siv rau hauv cov khoom noj, cawv, dej haus, tshuaj thiab lwm yam kev lag luam tuaj yeem siv tau.
