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FRAME SIZE(MM) D | COVER SIZE(MM) d | CLEAN OPENING(MM) P | BEAR WEIGHT |
400 | 300 | 270 | 10T |
470 | 400 | 350 | 5T |
570 | 500 | 460 | 20T |
680 | 600 | 550 | 10T |
720 | 650 | 600 | 5T |
780 | 700 | 650 | 15T |
830 | 700 | 650 | 50T |
1020 | 900 | 830 | 10T |






Product Name | Round Composite Fiberglass Manhole Cover For Sewer And Municipal Construction |
Color | Black,Grey,Green,Yellow |
Manufacturing Technique | Film Pressure Under The High Temperature |
Operative Standard | CJ\\T212-2005 |
Main Classification | Square\\Rectangle |
Application Field | Municipal,Factories,Residential Area |

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