Product Overview
This heavy‑duty square ductile iron manhole cover is manufactured from QT500‑7 ductile iron, fully compliant with EN124‑2 D400 standard. Designed for heavy‑traffic road conditions, it delivers outstanding compression resistance, impact toughness and anti‑break performance. The anti‑slip bump texture on surface improves friction for vehicle and pedestrian safety. Widely deployed on municipal roads, truck lanes, industrial zones and logistics yards for underground utilities access including sewer, water, power and communication systems.
Key Features
EN124‑2 D400 Heavy‑Duty Grade
400kN test load capacity, suitable for roads with heavy truck traffic
01
QT500‑7 Ductile Iron Material
High toughness, avoids brittle fracture under repeated vehicle rolling
02
Non‑slip Raised Dot Surface Texture
Prevents skidding for vehicles and walkers
03
Accurate Cast Marking
Clear EN124‑2 D400 casting marks for specification identification
04
Perfect Fit with Matching Frame
Reduces shifting, rattling and noise under traffic load
05
Technical Parameters
| Item | Details |
| Material | Ductile Iron QT500‑7 |
| Standard | EN 124‑2 |
| Load Class | D400 (400 kN) |
| Shape | Square |
| Surface Finish | Raw cast / Bitumen black painting |
| Matching Frame | Supplied as complete cover‑frame set |
| Application | Municipal roads, highways, industrial parks, logistics yards, heavy‑traffic areas |
| Customization | OEM size, logo, symbol casting acceptable |
Application Scenarios
Municipal arterial roads, highway auxiliary roads, freight terminals, factory zones, large‑size parking lots, drainage, power supply, telecommunication underground manhole projects.
FAQ
Q: What traffic can D400 square manhole cover withstand?
A: D400 grade conforming to EN124‑2 can bear heavy trucks and lorries, applicable for vehicle‑carried main roads, not for airport runway.
Q: Why choose ductile iron over grey cast iron?
A: Ductile iron QT500‑7 has great toughness. It will not break easily under shock and rolling, while grey cast iron is brittle and tends to crack.
Q: Can you make custom dimension square manhole covers?
A: Yes, OEM service is available. Please offer your drawing or required dimension, load class and logo requirement.
Q: Does this cover come together with frame?
A: We supply manhole cover alone or complete set with matching cast iron frame for on‑site installation.
Q: What is bitumen painting used for?
A: Bitumen black coating enhances anti‑rust performance against rain, moisture and outdoor corrosive environment.
Hot Tags: square ductile iron manhole cover en124‑2 d400, China square ductile iron manhole cover en124‑2 d400 manufacturers, suppliers, factory, B125 Ductile iron manhole cover, CE certified manhole cover cast iron, Double Triangular Ductile Iron Manhole Cover, round chamber cover, Shockproof airport ductile iron manhole cover, Square Ductile Iron Manhole Cover
