Heavy-Duty Marine Steel Protruding Manhole Covers – Premium Water Drainage Solutions
High-Performance Protruding Manhole Covers for Engine & Boiler Rooms
Our marine steel protruding manhole covers feature an elevated coaming design that effectively prevents water accumulation and debris entry in critical ship compartments. Available in round, oblong and oval configurations, these rugged covers are specifically engineered for engine rooms, boiler compartments, and other high-moisture areas.
Key Features & Benefits:
✔ Superior Drainage Protection: Raised coaming prevents water/sludge ingress
✔ Three Structural Options: Oblong (most common), round, and oval configurations
✔ Heavy-Duty Construction: 4-14mm thick steel for maximum durability
✔ Secure Fastening System: M20-M26 bolts ensure tight sealing
✔ Corrosion-Resistant: Hot-dip galvanized or painted finish options
Technical Specifications
Standard Models Available:
| Clear Size (L×B) mm | L1 mm | L2 mm | B1 mm | B2 mm | Thickness (S) mm | Fastener Size | Fastener Qty | Weight (kg) |
|---|---|---|---|---|---|---|---|---|
| 450×350 | 470 | 570 | 370 | 470 | 4 | M20 | 16 | 23.2 |
| 450×350 | 470 | 570 | 370 | 470 | 6 | M20 | 16 | 30.8 |
| 450×350 | 470 | 570 | 370 | 470 | 8 | M20 | 16 | 36.9 |
| 600×400 | 620 | 720 | 420 | 520 | 6 | M20 | 20 | 48.8 |
| 600×400 | 620 | 720 | 420 | 520 | 8 | M20 | 20 | 59.2 |
| 800×600 | 820 | 920 | 620 | 720 | 8 | M26 | 26 | 52.4 |
| 800×600 | 820 | 920 | 620 | 720 | 10 | M26 | 26 | 65.8 |
The description/sizes may be different with goods, please check with us when order.
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