Customization: | Available |
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After-sales Service: | Compensation for Quality Problems |
Warranty: | 1 Year |
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Audited by an independent third-party inspection agency
No. | Comparison Dimension | SMC Manhole Cover (Proposed for Hynds) |
Cast Iron Manhole Cover (Current Main Product) |
Summary |
1 | Strength & Load-Bearing Capacity | - Meets the needs of most municipal, commercial and medium-to-high load scenarios; - More in-depth testing is required in extreme overload (such as airport runways and facilities). |
- High reliability in high-pressure and heavy-load environments; - Brittle cracks may occur if the casting process or material grade is not good. |
In conventional load scenarios, SMC performance is sufficient; in heavy-load extreme occasions, cast iron still has advantages or upgraded SMC can be considered. |
2 | Weight & Installation | - Lightweight, easy to install, saving labor and transportation costs; - Market awareness is still low, and corresponding training or usage guidance is required. |
- Heavy weight, good stability, not easy to shift; - More manpower or machinery is required, and the installation cost is relatively high. |
SMC is more suitable for projects with insufficient manpower, tight construction schedule or limited installation conditions; cast iron can still be completed quickly when construction resources are sufficient. |
3 | Anti-Theft & Safety | - No metal recycling value, the risk of theft is almost zero; - Special anti-theft design can be added to further improve safety. |
- Has metal recycling value, theft incidents are frequent; - Anti-theft locks or alarm devices need to be installed separately, adding extra costs. |
SMC is more effective in areas with high incidence of theft and projects with high public safety requirements. |
4 | Corrosion Resistance | - Resistant to acid, alkali, salt spray and general chemical corrosion, the surface does not rust, and less maintenance in the later stage; | - Long service life in ordinary municipal environments; - Coastal and chemical zones are prone to rust and require continuous anti-corrosion and maintenance. |
In chemical, coastal, and high-salt-alkali areas, SMC saves more maintenance costs; cast iron needs to strengthen anti-corrosion treatment. |
5 | Temperature adaptability range | - The structure is stable and not easy to deform in the range of **-40ºC to 150ºC**; - Very few high-temperature scenarios exceeding 150ºC require special evaluation. |
- It is less sensitive to high temperatures, but may become brittle in extremely cold environments; - Long-term use in extremely low temperatures or hot and cold cycle environments requires regular inspections. |
SMC can meet most climatic conditions without worrying about high-temperature deformation; customized solutions can also be considered for extremely cold and hot scenes. |
6 | Cost and Return on Investment (ROI) | - The initial purchase price is slightly higher than ordinary cast iron, but the subsequent theft, corrosion, maintenance and replacement costs are lower; - The cost advantage of the whole life cycle is obvious. |
- The supply chain is mature, and the unit price is usually lower than SMC; - If the risk of anti-theft, maintenance or corrosion is considered in the long term, the total cost may rise. |
To focus on long-term ROI or safe and stable operation, SMC has more outstanding overall advantages; cast iron can be selected first for extremely tight budgets or short-term projects. |
7 | Environmental protection and carbon emissions | - The production energy consumption and carbon emissions are lower, in line with the trend of green environmental protection; - The waste recycling system is still developing. |
- The metal recycling system is mature; - The smelting process has high energy consumption and high carbon emission pressure, and it is necessary to cope with increasingly stringent environmental protection policies. |
In the current ESG and low-carbon policy environment, SMC can better demonstrate its environmental advantages; cast iron can rely on recycling, but high emissions are difficult to change. |
8 | Design and aesthetics | - Flexible customization of colors, patterns, and brand logos; - Suitable for urban landscapes and high-end commercial projects, meeting the unity of aesthetics and functionality. |
- Traditional appearance is stable and highly recognizable; - If delicate carvings or special spraying are required, the cost and construction period will increase. |
In occasions that focus on visual or brand image, SMC customization is more attractive; ordinary public roads or industrial environments have a simpler and more direct demand for the traditional appearance of cast iron. |