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Cam khwb cia hlau manhole npog

  • Manhole Cover and Frame

    Manhole Npog thiab Ncej

    Manhole Npog yog tsim los rau kev tsim kho thiab kev siv pej xeem.Lub manhole muaj xws li ib lub thav duab thiab ib lub hau thiab / los yog grating.Manhole npog tuaj yeem tiv thaiv kev nyab xeeb ntawm cov neeg taug kev thiab tsheb zoo dua, thiab tuaj yeem tiv thaiv kom tsis txhob nag thiab lwm yam dej nkag.Manhole Npog yuav tsum du thiab tsis muaj xuab zeb qhov, tshuab qhov, distortion lossis lwm yam tsis xws luag.

    Txheej: Dub bitumen Txhua tus neeg tshem tawm tsuas yog txwv rau qhov siab tshaj plaws ntawm 3 hli

    Qib: AA1900KN, AA2 600KN, A1 400KN, A2 230KN, B 125KN, C30KN