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FCST-TH-SMC05
FCST
FCST-TH-SMC05
Product Overview
What Is a Fiber Optic Manhole Chamber?
Underground fiber optic infrastructure faces constant challenges: moisture, soil pressure, corrosion, and long-term maintenance costs. A weak access chamber doesn't just risk cable damage—it drives up operational expenses.
FCST-TH-SMC05 Modular Composite Access Chamber is an underground access enclosure used for protecting and managing fiber optic cables, telecom ducts, and utility connections.It allows technicians to inspect, splice, route, and maintain underground communication infrastructure safely and efficiently.
Why infrastructure engineers choose FCST-TH-SMC05
Built for the underground environment
Made from SMC composite material, this chamber offers excellent corrosion resistance, electrical insulation, and flame retardancy (V0 grade). It withstands aggressive soil conditions and temperature extremes from -40°C to +65°C.
Strong enough for roads and heavy loads
Certified to EN124 with load classes B125 (12.5T), C250 (25T), and D400 (40T). Whether under pavements, parking lots, or driveways—this chamber stays secure.
Depth you can adjust on site
Modular design allows depth stacking. You get flexibility without custom manufacturing—adapt to different cable burial depths as needed.
Stays stable underground
Transverse and vertical stiffeners on the outer shaft integrate firmly with compacted soil layers. No shifting, no loosening after backfilling and rolling.
Lighter than concrete, easier to install
The prefabricated SMC structure reduces on-site construction labor and equipment costs. No heavy lifting or complex casting required.
Application Scenarios
Product Specifications
| Construction | Description |
| Executive Standard | EN124 |
| Material | SMC |
| Manhole Cover Load Grade | B125(12.5T) | C250(25T) | D400(40T) |
| Length | 600.00mm | 23.623in |
| Width | 600.00mm | 23.623in |
| Depth | 900.00mm | 35.434in |
| Weight | 108kg(3 Layers) |
| Flame Retardant Grade | V0 |
| Environmental Requirements LOGO | Meet ROHS Available |
| Working Temperature | -40°C~+65°C |
| Storage Temperature | -40°C~+70°C |
| Service Life | 30 years |
Product Size
| External Size(L*W*D) | Internal Dimensions(L*W*D) | Manhole Cover Load Grade |
| 720*720*960mm (28.347"x28.347"x37.796") | 600*600*900mm (23.623"x23.623"x35.434") | B125(12.5T)/C250(25T)/D400(40T) |
Product Application
Note：The practical application of this Composite Manhole Chamber, covering many fields such as municipal administration, electric power,electricity, water , road administration,and drainage.
On each side of the product. The size of the drill hole can be adjusted at the construction site according to the actual size of the HDPE Silicon Pipe/HDPE Micro-duct.
FAQ
1. Which parts of Composite Access Chamber for Telecommunication can be customized in color?
Customizable Parts:All SMC/BMC parts.
Customizable Color: According to customer requirements.
2.What transport methods does the Telecom Handhole support?
DHL、UPS、FedEx、Large-scale air transport、large-scale sea transport、rail transport.
3. What industry standards do Underground fiber manhole meet?
Executive Standard:EN124:2015.
For Example B125 BMC L762*W431.8*D609.6mm：
Chemical Resistance Performance:
Test Conditions:Soaked in the specified solution for 48h.
Test results:No obvious corrosion on the surface, qualityloss <1%.
Mechanical Performance:
Tensile Strength:GB/T1447-2005 105MPa.
Tensile Modulus:GB/T1447-2005 11.8GPa.
Bending Strength:GB/T1449-2005 213MPa.
Flexural Modulus:GB/T1449-2005 11.3GPa.
Impact Toughness: GB/T1451-2005 90.8KJ/㎡.
Barr's Hardness: GB/T3854-2005 56.
Thermal Performance:
Heat Distortion Temperature:GB/T1634.2-2004 >200℃.
Bending Strength:GB/T9979- 2005(-40℃) 265MPa.
Flexural modulus:GB/T9979- 2005(-40℃) 1.43x10^(4)MPa.
Bending strength retention rate:GB/T9979- 2005(-40℃) 124%.
Flexural modulus retention rate:GB/T9979- 2005(-40℃) 11.16%.
Linear expansion coefficient:B/T2572-2051.66x10^(-5) 1.66x10^(-5).
4. Where is the fibre optic manhole currently sold?
Major regions: Canada,Australia,USA,Germany,Somaliland,Brunei,Panama,SouthAfrica,Jamaica, Iraq etc.
5. How long does it take to customize the underground telecom vault?
From project approval to mass production, 60 working days.
6.What are the advantages of the Telecom Manhole Chamber by FCST?
1.Easy installation.
2.Strong corrosion resistance.
3.Good resistance to high and low temperature.
4.Convenient transportation and cost reduction.
5.Transverse and vertical cross stiffeners are arranged around the outer side of the shaft, also be closely combined with the rammed soil layer. It is not easy to move and loosen after rolling.
7. What tests do manhole inspection chamber undergo before leaving the factory?
1.Material sampling inspection.
2.Dimensional measurements.
3.Appearance flatness inspection.
4.Load-bearing stress test.
5.Trial installation.
8. What is the maximum high pressure resistance value of the fiber optic telecom handhole?
According to EU standards EN124-5, the telecom manhole chamber made of SMC/BMC can achieve a single-point pressure of up to D400.
9. How do underground fiber vault being packed?
We typically recommend disassembling the plates of each part and placing them on trays, which can be packaged together based on the same size components, or according to a set of telecom manholes.
10. What are the industry terms that are often encountered in Manholes Chamber?
Single-point suppression: Press the 250*250mm pressing plate and there was no damage or breakage.
Load capacity: Able to support the weight of a large area (such as pedestrians and vehicles) passing over.
