nyom cog manhole npog

Yete stainless hlau nyom cog manhole npog suav nrog puag ncig thiab square manhole npog, uas yog nyob rau hauv txoj kab nrog feem ntau cov haujlwm ntawm kev ua lag luam rau manhole npog kev thov. Cov txheej txheem tsim ib qho tsis tsuas yog lav qhov zoo ntawm manhole npog, tab sis kuj tso cai rau lub manhole npog kom muaj peev xwm ntau dua. Txawm hais tias nws raug cuam tshuam los ntawm kev quab yuam sab nraud lossis overloaded, nws yuav tsis raug puas tsuaj los yog raug. Nws yog qhov tsim nyog rau txoj siv tawv ntsuab thiab lwm qhov chaw uas lub tsheb lossis lub tsheb tsis yog lub cev muaj zog yog txwv tsis pub nkag mus, thiab tuaj yeem ncav cuag A15 cov kabmob load.