Manhole Frame and Grate / Cover
Strength: We offer light duty standard designs (1000 lb. loadings) to heavy duty designs (H-20). Other loadings are available upon request.
Cover designs: Each standard design can be solid, grated, vented or bolted and gasket sealed for water tight needs.
Custom made cover designs: Virtually any design is available upon request.
Lettering: We can letter the cover with virtually whatever you need at a low cost.
Locking devices: We offer outside hinge and hasp or a bolted cover.
Lifting devices: We offer the standard pickhole, steel lifting bar, steel drop through handle, cast in handle (for watertight manholes).
Type No. | A | B | C | D | E |
| B-1773 A | 12 | 16 | 10 | 1 -1/4 | 2 |
| B-1773 B | 15 | 20 | 13 | 1 -1/4 | 2 |
| B-1773 C | 18 | 23 | 16 | 1 -1/4 | 2 |
| B-1773 D | 20 | 26 | 18 | 1 -1/4 | 2 |
| B-1773 E | 22 | 27 | 20 | 1 -1/4 | 2 |
| B-1773 F | 24 | 32 | 22 | 2 | 2 - 3/4 |
| B-1773 G | 26 | 34 | 24 | 2 | 2 - 3/4 |
| B-1773 H | 28 | 36 | 26 | 2 | 2 - 3/4 |
| B-1773 I | 30 | 28 | 38 | 2 | 2 - 3/4 |
| B-1773 J | 32 | 40 | 30 | 2 | 2 - 3/4 |
| B-1773 K | 34 | 42 | 32 | 2 | 2 - 3/4 |
| B-1773 L | 36 | 44 | 34 | 2 | 2 - 3/4 |
| B-1773 M | 38 | 46 | 36 | 2 | 2 - 3/4 |
Up to today, with reasonable price and good quality, all our products sell well in the international marketing. We want to ensure that you get our good service, only high quality and speedy delivery. We sincerely want to supply you with high quality products and perfect service based on our efficient management and professional work teams. Because professional, so trust!
For years, our products such as various elbows, bends, tees, crosser, reducers, caps, flanges and other pipe fittings from carbon steel, stainless steel, and low-temperature steel have been broadly uesed in power, oil and gas, petrol-chem, ship-building, heat system, paper-producing, metalllergy and etc., and been exported to and highly valued in Italy, Belgium, America, Chile, Bolivia, the United Arab Emirates, Brazil, South Korea and India etc...
