Baoding Guokun Machinery Co., Ltd could supply you the high quality and cost effective municipal engineering, civil engineering casting parts, iron Manhole covers and frames, manhole bases, grate, etc
Manhole covers and frames are manufactured for construction and public use, guttering and drainage.
All Manhole covers produced by Guokun Casting factory are smooth and free form sand holes, blow holes, distortion or any other defects.
- Material:
Ductile iron: GGG500-7 & 400-12
Grey Iron: GG20
- Design:
- EN124 A15, B125, c250, D400, E600 and F900
EN 124 C250: For covering devices installed on roadsides and in gutters at the side of streets.
EN 124 D400: Road surfaces( including pedestrianized streets), hard shoulders and parking areas for vehicles of all kinds.
- A60005 for casting design
- As per customer’s drawings or samples.
| Order no. | Inner Dia | Grating | Outer Dia | Height | Weight(KG) | Pressure(KN) |
| 252x 252 | 326x 326 | 360x 360 | 36 | 13.5 | C250 | |
| 350 x 350 | 400 x 400 | 470 x 470 | 40 | 20 | C250 | |
| 450 x 450 | 500 x 500 | 580 x 580 | 50 | 32 | ||
| 550 x 550 | 600 x 600 | 680 x 680 | 50 | 39 | C250 | |
| 350 x 350 | 400 x 400 | 500 x 500 | 100 | 36.2 | D400 | |
| 450 x 450 | 500 x 500 | 600 x 600 | 100 | 49 | D400 | |
| 560 x 560 | 600 x 600 | 700 x 700 | 100 | 62 | D400 |
- Coating
- cold Applied Black Bitumen
- Without coating
- Coating as per customer’s requirements.
Investment precision casting, lost wax casting, water glass casting, steel casting, iron casting, sand casting, etc
Forging parts, open die forging, close die forging, hot forging, mold forging
Precision machining, rough machining
