China Marine Steel Doors Meeting CB751-68 Standard
Our range of China marine steel doors is specifically designed and manufactured to adhere to the rigorous CB751-68 standard, ensuring exceptional performance and reliability in marine environments. These robust doors are ideal for installation in working cabins and on inland ships, providing essential protection and functionality.
Types of Marine Steel Doors
- MA – Heavy Steel Watertight Door: This heavy-duty door is engineered to withstand harsh marine conditions, offering superior watertight integrity. It is a perfect choice for areas where maximum protection against water ingress is required.
- MB – Light Steel Watertight Door: A lighter yet still watertight option, the MB door provides reliable protection while being more suitable for applications where weight is a consideration.
- MC – Light Steel Watertight Door with Fixed Round Window: This variant combines the watertight properties of the MB door with the added benefit of a fixed round window, allowing for natural light and visibility while maintaining security.
- MD – Light Steel Watertight Door with Linked Clips: The MD door features linked clips for enhanced security and ease of operation, making it a versatile choice for various marine applications.
- ME – Light Steel Watertight Door with Linked Clips & Fixed Round Window: Combining the features of the MC and MD doors, the ME door offers both a fixed round window and linked clips, providing optimal functionality and security.
- FA – Non-Watertight Steel Door: For areas where watertightness is not a primary concern, the FA door offers a cost-effective and durable solution.
- FB – Non-Watertight Steel Door with Fixed Round Window: Similar to the FA door but with the addition of a fixed round window, the FB door provides improved visibility and natural light.
- BA – Semi-Watertight Steel Door: The BA door offers partial protection against water ingress, making it suitable for areas where some level of water resistance is desired.
- BB – Semi-Watertight Steel Door with Fixed Round Window: Combining the semi-watertight properties of the BA door with a fixed round window, the BB door provides a balance of functionality and visibility.
- BC – Semi-Watertight Steel Door with Double Half Leaves: This unique design features double half leaves, allowing for greater flexibility in terms of opening and closing, while still providing semi-watertight protection.
Quality Assurance and Testing
All our watertight steel doors undergo rigorous testing to ensure their performance meets the highest standards. They must pass a hose test with a nozzle diameter of 12.5mm and a water pressure of 0.25Mpa, demonstrating their ability to withstand water ingress effectively. Semi-watertight steel doors are also subjected to a hose test from top to bottom, although they do not have a specific water pressure requirement.
Main Size Specifications (mm)
| Type | Doorway Size | Wall Opening Size | B2 | B3 | L2 | L3 | t | Clip Qty | Weight (kgs) |
|---|---|---|---|---|---|---|---|---|---|
| MA | 500X1000 | 560X1060 | 536 | 672 | 1040 | 1172 | 5 | 4 | 60.1 |
| MA | 600X1200 | 660X1260 | 640 | 772 | 1240 | 1372 | – | – | 75.5 |
| MA | 600X1400 | 660X1460 | – | – | 1440 | 1572 | 6 | 85 | – |
| MA | 650X1550 | 710X1610 | 690 | 822 | 1590 | 1722 | – | – | 99 |
| MA | 650X1650 | 710X1710 | – | – | 1690 | 1822 | – | – | 103 |
| MA | 800X1650 | 860X1710 | 840 | 972 | – | – | 8 | – | 126 |
| MB | 500X1000 | 560X1060 | 536 | 672 | 1036 | 1172 | 3 | 4 | 46 |
| MB/MC | 600X1200 | 660X1260 | 636 | 772 | 1236 | 1372 | 6 | – | 55.9/56.5 |
| MB/MC | 600X1400 | 660X1460 | – | – | 1436 | 1572 | – | – | 65.5/66.1 |
| MB/MC | 650X1550 | 710X1610 | 686 | 822 | 1586 | 1722 | – | – | 74/75.2 |
| MB/MC | 650X1650 | 710X1710 | – | – | 1686 | 1822 | – | – | 76/77.2 |
| MB/MC | 800X1650 | 860X1710 | 836 | 972 | – | – | – | – | 93.6/94.9 |
| MD/ME | 600X1400 | 660X1460 | 636 | 772 | 1436 | 1572 | 2 | – | 67.3/68 |
| MD/ME | 650X1550 | 710X1610 | 686 | 822 | 1586 | 1722 | – | – | 76.4/77.6 |
| MD/ME | 650X1650 | 710X1710 | – | – | 1686 | 1822 | – | – | 78.6/79.8 |
| MD/ME | 800X1650 | 860X1710 | 836 | 836 | – | – | – | – | 96.3/97.5 |
| BA/BB | 500X1000 | 560X1060 | 536 | 672 | 1036 | 1172 | 2 | 4 | 42.3 |
| BA/BB | 600X1200 | 660X1260 | 636 | 772 | 1236 | 1372 | – | – | 52.3/52.9 |
| BA/BB | 600X1400 | 660X1460 | – | – | 1436 | 1572 | – | – | 56.8/57.4 |
| BA/BB | 650X1550 | 710X1610 | 686 | 822 | 1586 | 1722 | 1 | – | 68.7/70 |
| BA/BB | 650X1650 | 710X1710 | – | – | 1686 | 1822 | – | – | 70.8/72 |
| BA/BB | 800X1650 | 860X1710 | 836 | 922 | – | – | – | – | 84.3/85.5 |
| BC | 650X1650 | 710X1710 | 684 | 820 | 1684 | 1820 | 2 | – | 74.2 |
| BC | 800X1650 | 860X1710 | 934 | 920 | – | – | – | – | 89 |
| FA/FB | 500X1000 | 560X1060 | 536 | 668 | 1036 | 1168 | – | 3 | 30.1 |
| FA/FB | 600X1200 | 660X1260 | 636 | 768 | 1236 | 1368 | – | – | 39.2/52.9 |
| FA/FB | 600X1400 | 660X1460 | – | – | 1436 | 1568 | – | – | 42.2/57.4 |
| FA/FB | 650X1550 | 710X1610 | 686 | 818 | 1586 | 1718 | – | – | 49.4/70 |
| FA/FB | 650X1650 | 710X1710 | – | – | 1686 | 1818 | – | – | 50.8/72 |
| FA/FB | 800X1650 | 860X1710 | 836 | 968 | – | – | – | – | 62.4/85.5 |
FAQs
- Q: What is the difference between a watertight and a semi-watertight marine steel door?
- A: A watertight marine steel door is designed to prevent water ingress completely under specified test conditions, while a semi-watertight door offers partial protection against water, typically undergoing a hose test from top to bottom without a specific water pressure requirement.
- Q: Can I install a marine steel door with a fixed round window in an area exposed to high water pressure?
- A: It depends on the type of door. Watertight doors with fixed round windows (such as the MC and ME types) are designed to withstand water pressure as specified in the testing standards. However, it is essential to consult the manufacturer’s specifications and ensure the door is suitable for the intended application.
- Q: How do I determine the correct size of a marine steel door for my application?
- A: To determine the correct size, measure the doorway opening and the wall opening where the door will be installed. Refer to our size specifications table to find a door that matches your measurements. If you are unsure, consult with our technical support team for assistance.
- Q: Are your marine steel doors corrosion-resistant?
- A: Yes, our marine steel doors are manufactured using high-quality materials that are resistant to corrosion, ensuring long-lasting performance in marine environments. Additionally, they may undergo surface treatments or coatings to further enhance their corrosion resistance.
- Q: Can I customize a marine steel door to meet specific requirements?
- A: Yes, we offer customization options for our marine steel doors to meet specific customer requirements. This may include changes to size, window type, clip configuration, or other features. Contact our sales team to discuss your customization needs.
Please Note: The description might be incorrect, please contact us for confirmation.
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