


| 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 |






1. Can I get free samples?
|
Shandong Lurun Plastic Industry Co., Ltd.
Audited Supplier
10 years
Profile Certified by SGS/BV
|



| 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 |






China Manufacturer 500X500mm FRP/GRP Composite Square Manhole Cover with Plastic/Pull Rings
Shandong Lurun Plastic Industry Co., Ltd.
Carbon Steel Bar Trench Grating China Factory/Diamond Pattern Galvanised Grates & Frames
Yantai United Steel Structure Co., Ltd.
Steel Grate and Frame for Drainage/Galvanised Grates & Frames
Yantai United Steel Structure Co., Ltd.
Steel Grate and Frame /Storm Pits Cover / Cover Grate /Kerb Grate
Yantai United Steel Structure Co., Ltd.