CLEAR OPEN 315MM, B125
This 315mm round SMC composite manhole cover is molded from glass fiber reinforced unsaturated polyester resin (SMC) under high temperature and pressure, meeting the B125 load class. Specifically designed for temporary drainage systems at construction sites and small pipeline maintenance, its compact and flexible round structure meets the special protection needs of construction scenarios.
Key Advantages
• Small-Diameter Round Design: The 315mm clear opening features a self-locking round structure that prevents accidental falls due to angular misalignment, compatible with small drainage pipes and inspection wells commonly found on construction sites.
• 12.5-Ton Load Capacity: Compliant with the B125 standard, it can withstand the normal passage and rolling of light to medium construction equipment such as construction vehicles and forklifts, ensuring safety on construction sites.
• Impact and Collision Resistant: Given the complex environment of construction sites, this product is manufactured using high-strength SMC molding, offering excellent impact resistance and drop resistance to withstand harsh construction conditions.
• Lightweight and Portable: Weighing far less than cast iron, it is easy to move, relocate, and install quickly, adapting to the frequent adjustments required on construction sites.
• Chemical Corrosion Resistant: Effectively resists erosion from construction wastewater, slurry, and various chemicals, suitable for complex construction drainage environments.
• Low Cost, High Efficiency: With no metal recycling value, it provides excellent anti-theft protection; maintenance-free and highly durable, resulting in low overall usage costs.
Applicable Scenarios:
Temporary inspection wells on construction sites, construction drainage systems, small municipal pipeline access points, and drainage management in temporary enclosed areas.

|
ITEM NO. |
CLASS |
O |
D |
F |
H |
LOCK/ SCREW |
|
CLEAR OPEN |
COVER DIA |
FRAME DIA |
FRAME HT |
|||
|
MR315B |
B125 |
315 |
341X341 |
400X400 |
50 |
Screw |