>> Features
1. Excellent electrical insulation and smart grid adaptability
The volume resistivity of SMC material is > 1 × 10 ^ 14 Ω · cm, and the breakdown voltage intensity is ≥ 15kV/mm, which can completely block the current conduction. It is especially suitable for live scenes such as urban comprehensive pipe corridors, high-voltage substations, and rail transit power supply systems to avoid leakage safety accidents caused by manhole cover damage. At the same time, it meets the high standard requirements for insulation protection of smart grid equipment, and can achieve zero signal interference when used with underground cable monitoring systems, providing safety for the construction of new power systems.
2. Full-band electromagnetic compatibility and precision equipment friendliness
Using glass fiber reinforced non-magnetic composite material with magnetic permeability < 1.005μ, completely eliminates the eddy current effect caused by traditional metal manhole covers. In sensitive areas such as 5G base stations, airport navigation stations, and medical imaging centers, communication signal attenuation can be avoided (measured signal fidelity > 99.7%), and precision instrument measurement accuracy can be guaranteed. Passed EMC Level 3 certification, suitable for intensive deployment scenarios of smart city IoT sensing devices.
3. Triple weathering protection system
• Chemical corrosion protection: passed the ASTM B117 salt spray test for 2000 hours without corrosion, resistant to acid and alkali medium erosion with pH 3-11, suitable for extreme environments such as coastal salt spray, industrial acid rain and chemical plant areas
• Physical erosion protection: The surface nano-modified coating achieves UV8 anti-aging (> 25-year yellowing index Delta E < 2), and no structural deformation under temperature difference of -50 ° C to 150 ° C
• Biological corrosion protection: add compound anti-mildew and bacteriostatic agent, the antibacterial rate is > 99%, effectively preventing microbial degradation
4. Lightweight structural design and engineering economics
The density is only 1/4 (1.8g/cm ⊃3;) of the cast iron manhole cover, which can be transported and installed by a single person, reducing the construction labor cost by more than 30%. The modular assembly structure supports rapid maintenance, and the maintenance efficiency is improved by 50%. Passed the GB/T23858-2017 B125 load certification, the bearing capacity is up to 25 tons, meeting the traffic needs of heavy vehicles on urban main roads.
CODE | LOAD | O | D | F | h | H | WEIGHT |
SS300B | B125 | 240x240 | 300x300 | 375x375 | 37 | 57 | 10.0 KG |
SS300C | C250 | 240x240 | 300x300 | 375x375 | 37 | 57 | 10.0 KG |
>> About The Company And Smc Manhole Cover
Qingdao Elite New Materials Co., Ltd. is a company specializing in the research, development, production, and sales of SMC Manhole Cover. Established in 2019, the company is committed to providing high-quality SMC composite products to the global market. Elite New Materials follows the principles of innovation and quality excellence in the production of SMC manhole covers, using advanced production equipment and technology. The products comply with both domestic and international standards and are widely used in urban construction, road maintenance, park facilities, and other sectors.
The company’s products are exported to the United States, Australia, Germany, the United Kingdom, India, South Africa, and many other countries, and are highly praised by international customers. Our manhole cover series includes standard products in various specifications and load ratings, and we also offer custom solutions based on specific customer needs.
If you are interested in our SMC Manhole Cover, feel free to contact us for consultation or orders. We will provide you with the best products and services and look forward to cooperating with you to advance infrastructure construction.
>> Delivery & Shipping
Fast, On-Time Delivery
We ensure timely delivery, with standard products shipped in 30 days and customized orders given an estimated lead time after confirmation.
Global, Reliable Shipping
We work with top logistics partners to deliver your products safely worldwide. You can track your order every step of the way.
>> Customer Cases & Reviews
Trusted by Global Leaders
Our composite manhole covers are used in major infrastructure projects worldwide. Here’s what our customers say:
“Elite’s manhole covers met all our technical needs and improved construction efficiency.”
— Procurement Manager, Global Construction Company
“We chose Elite for their eco-friendly products and custom solutions that fit our project perfectly.”
— Project Manager, International Environmental Company
>> Environmental Responsibility & Social Responsibility
Sustainable & Eco-Friendly
We reduce environmental impact by using eco-friendly SMC/BMC materials, ensuring minimal carbon emissions throughout the product lifecycle.
Committed to Social Good
We support educational projects and environmental initiatives, striving to make a positive impact on society.
>> Features
1. Excellent electrical insulation and smart grid adaptability
The volume resistivity of SMC material is > 1 × 10 ^ 14 Ω · cm, and the breakdown voltage intensity is ≥ 15kV/mm, which can completely block the current conduction. It is especially suitable for live scenes such as urban comprehensive pipe corridors, high-voltage substations, and rail transit power supply systems to avoid leakage safety accidents caused by manhole cover damage. At the same time, it meets the high standard requirements for insulation protection of smart grid equipment, and can achieve zero signal interference when used with underground cable monitoring systems, providing safety for the construction of new power systems.
2. Full-band electromagnetic compatibility and precision equipment friendliness
Using glass fiber reinforced non-magnetic composite material with magnetic permeability < 1.005μ, completely eliminates the eddy current effect caused by traditional metal manhole covers. In sensitive areas such as 5G base stations, airport navigation stations, and medical imaging centers, communication signal attenuation can be avoided (measured signal fidelity > 99.7%), and precision instrument measurement accuracy can be guaranteed. Passed EMC Level 3 certification, suitable for intensive deployment scenarios of smart city IoT sensing devices.
3. Triple weathering protection system
• Chemical corrosion protection: passed the ASTM B117 salt spray test for 2000 hours without corrosion, resistant to acid and alkali medium erosion with pH 3-11, suitable for extreme environments such as coastal salt spray, industrial acid rain and chemical plant areas
• Physical erosion protection: The surface nano-modified coating achieves UV8 anti-aging (> 25-year yellowing index Delta E < 2), and no structural deformation under temperature difference of -50 ° C to 150 ° C
• Biological corrosion protection: add compound anti-mildew and bacteriostatic agent, the antibacterial rate is > 99%, effectively preventing microbial degradation
4. Lightweight structural design and engineering economics
The density is only 1/4 (1.8g/cm ⊃3;) of the cast iron manhole cover, which can be transported and installed by a single person, reducing the construction labor cost by more than 30%. The modular assembly structure supports rapid maintenance, and the maintenance efficiency is improved by 50%. Passed the GB/T23858-2017 B125 load certification, the bearing capacity is up to 25 tons, meeting the traffic needs of heavy vehicles on urban main roads.
CODE | LOAD | O | D | F | h | H | WEIGHT |
SS300B | B125 | 240x240 | 300x300 | 375x375 | 37 | 57 | 10.0 KG |
SS300C | C250 | 240x240 | 300x300 | 375x375 | 37 | 57 | 10.0 KG |
>> About The Company And Smc Manhole Cover
Qingdao Elite New Materials Co., Ltd. is a company specializing in the research, development, production, and sales of SMC Manhole Cover. Established in 2019, the company is committed to providing high-quality SMC composite products to the global market. Elite New Materials follows the principles of innovation and quality excellence in the production of SMC manhole covers, using advanced production equipment and technology. The products comply with both domestic and international standards and are widely used in urban construction, road maintenance, park facilities, and other sectors.
The company’s products are exported to the United States, Australia, Germany, the United Kingdom, India, South Africa, and many other countries, and are highly praised by international customers. Our manhole cover series includes standard products in various specifications and load ratings, and we also offer custom solutions based on specific customer needs.
If you are interested in our SMC Manhole Cover, feel free to contact us for consultation or orders. We will provide you with the best products and services and look forward to cooperating with you to advance infrastructure construction.
>> Delivery & Shipping
Fast, On-Time Delivery
We ensure timely delivery, with standard products shipped in 30 days and customized orders given an estimated lead time after confirmation.
Global, Reliable Shipping
We work with top logistics partners to deliver your products safely worldwide. You can track your order every step of the way.
>> Customer Cases & Reviews
Trusted by Global Leaders
Our composite manhole covers are used in major infrastructure projects worldwide. Here’s what our customers say:
“Elite’s manhole covers met all our technical needs and improved construction efficiency.”
— Procurement Manager, Global Construction Company
“We chose Elite for their eco-friendly products and custom solutions that fit our project perfectly.”
— Project Manager, International Environmental Company
>> Environmental Responsibility & Social Responsibility
Sustainable & Eco-Friendly
We reduce environmental impact by using eco-friendly SMC/BMC materials, ensuring minimal carbon emissions throughout the product lifecycle.
Committed to Social Good
We support educational projects and environmental initiatives, striving to make a positive impact on society.
