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DF-630
Our Wind Resistant Steel Weathertight Door (Model DF-630) is a professional marine-grade solution engineered exclusively for harsh offshore and marine environments. As a premium single lever 6 dog weathertight door, it is tailor-made for marine industry clients, delivering uncompromising wind resistance, weathertight performance, and long-term durability in turbulent seas, high winds, and corrosive saltwater conditions. Meticulously fabricated with high-strength steel and corrosion-resistant components, this door ensures the safety of on-board personnel and assets while meeting the strict operational demands of marine and offshore projects.

Below are standard specifications of our marine grade wind resistant steel weathertight door, with custom sizes available upon request:
Model No. | Size | Opening Width A | Opening Height B | Cut-Out Dims (A×B×Radius) | Weight (LBS.) |
DF-630-2460 | 24×60 | 24" | 60" | 27"×63"×11" | 437 |
DF-630-2472 | 24×72 | 24" | 72" | 27"×75"×11" | 451 |
DF-630-2866 | 28×66 | 28" | 66" | 31"×69"×11" | 448 |
DF-630-2872 | 28×72 | 28" | 72" | 31"×75"×11" | 526 |
DF-630-3072 | 30×72 | 30" | 72" | 33"×75"×11" | 500 |
DF-630-3672 | 36×72 | 36" | 72" | 39"×75"×11" | 579 |
Note: Left-hand and right-hand opening orientations are both available. |
No. | Name & Specifications | QTY | Material |
1 | DOOR PANEL ASSEMBLY | 1 | STEEL |
2 | COAMING ASSEMBLY | 1 | STEEL |
3 | STIFFENER BAR | 1 | STEEL |
4 | DOG LEVER ASSEMBLY | 1 | STAINLESS |
5 | DOG CONNECTOR BAR | 6 | STAINLESS |
6 | HINGE PIN ASSEMBLY | 2 | STAINLESS |
7 | HAND LEVER ASSEMBLY | 1 | STAINLESS |
8 | DOOR GASKET | 1 | NEOPRENE |
9 | BUSHING | 4 | NYLON |
10 | GREASE FITTING | 6 | STAINLESS |
11 | DOOR CENTERING LUG | 1 | STEEL |
12 | LOCKING HASP | 1 | STEEL |
RIGHT/LEFT SINGLE LEVEL (6 DOG) WEATHERTIGHT DOOR SPECIFICATION TABLE | |||||||
MODEL NO. | SIZE | A | B | CUT-OUT DIMS | WEIGHT | ||
A | B | RADIUS | LBS. | ||||
DF-630-2460 | 24×60 | 24" | 60" | 27" | 63" | 11" | 437 |
DF-630-2472 | 24×72 | 24" | 72" | 27" | 75" | 11" | 451 |
DF-630-2866 | 28×66 | 28" | 66" | 31" | 69" | 11" | 448 |
DF-630-2872 | 28×72 | 28" | 72" | 31" | 75" | 11" | 526 |
DF-630-3054 | 30×54 | 30" | 54" | 33" | 57" | 11" | 433 |
DF-630-3060 | 30×60 | 30" | 60" | 33" | 63" | 11" | 480 |
DF-630-3072 | 30×72 | 30" | 72" | 33" | 75" | 11" | 500 |
DF-630-3666 | 36×66 | 36" | 66" | 39" | 69" | 11" | 535 |
DF-630-3672 | 36×72 | 36" | 72" | 39" | 75" | 11" | 579 |
Our offshore wind resistant steel weathertight door withstands category-rated high winds, heavy rain, and turbulent sea spray, delivering reliable weathertight sealing to prevent water ingress in severe marine conditions, minimizing operational downtime and safety risks for your projects.
Fabricated with heavy-duty steel door panel and coaming assembly, reinforced with a built-in stiffener bar, it offers exceptional impact resistance. Critical moving components adopt 304 stainless steel, ensuring superior saltwater corrosion resistance, extending service life and reducing maintenance costs.
The innovative single lever 6 dog weathertight door design enables one-person quick opening and closing, with 6-point uniform locking to ensure consistent sealing pressure across the door frame, eliminating gaps and improving operational efficiency for marine crews.
Equipped with a high-performance neoprene door gasket, it delivers airtight and watertight performance, while nylon bushings and stainless steel grease fittings ensure smooth, long-term operation of hinges and locking mechanisms with minimal maintenance.
This wind resistant steel weathertight door operates via a centralized single lever linkage system. When the hand lever is engaged, it drives the dog lever assembly and 6 stainless steel dog connector bars simultaneously, moving all locking dogs into uniform contact with the door coaming. This creates even, consistent compression on the neoprene gasket, forming a 360° watertight and weathertight seal. The door centering lug ensures precise alignment during closing, while the stainless steel hinge pin assembly with grease fittings enables smooth, friction-free rotation, and the locking hasp provides additional security against unauthorized access.
Precisely verify cut-out dimensions match the selected model before installation, ensuring the opening is level and plumb to avoid sealing gaps.
Weld the steel coaming assembly securely to the ship’s bulkhead or offshore structure, with continuous welding to prevent water penetration and structural loosening.
Inspect the neoprene gasket before each use, replacing it immediately if cracking, deformation, or wear occurs to maintain weathertight performance.
Lubricate hinge pins, locking mechanisms, and grease fittings every 3 months with marine-grade grease to ensure smooth operation and prevent corrosion.
Conduct regular pressure testing and visual inspections to comply with marine industry safety standards.
Yes. We offer custom dimensions, left/right opening orientation, and additional locking configurations to meet the specific requirements of your ship or offshore project.
Absolutely. All critical moving components use stainless steel, and the steel structure can be treated with marine-grade anti-corrosion coating, making it ideal for saltwater offshore and marine environments.
For bulk orders, the standard lead time is 15-25 working days, with expedited production available for urgent shipbuilding and offshore engineering projects.
Our Wind Resistant Steel Weathertight Door (Model DF-630) is a professional marine-grade solution engineered exclusively for harsh offshore and marine environments. As a premium single lever 6 dog weathertight door, it is tailor-made for marine industry clients, delivering uncompromising wind resistance, weathertight performance, and long-term durability in turbulent seas, high winds, and corrosive saltwater conditions. Meticulously fabricated with high-strength steel and corrosion-resistant components, this door ensures the safety of on-board personnel and assets while meeting the strict operational demands of marine and offshore projects.

Below are standard specifications of our marine grade wind resistant steel weathertight door, with custom sizes available upon request:
Model No. | Size | Opening Width A | Opening Height B | Cut-Out Dims (A×B×Radius) | Weight (LBS.) |
DF-630-2460 | 24×60 | 24" | 60" | 27"×63"×11" | 437 |
DF-630-2472 | 24×72 | 24" | 72" | 27"×75"×11" | 451 |
DF-630-2866 | 28×66 | 28" | 66" | 31"×69"×11" | 448 |
DF-630-2872 | 28×72 | 28" | 72" | 31"×75"×11" | 526 |
DF-630-3072 | 30×72 | 30" | 72" | 33"×75"×11" | 500 |
DF-630-3672 | 36×72 | 36" | 72" | 39"×75"×11" | 579 |
Note: Left-hand and right-hand opening orientations are both available. |
No. | Name & Specifications | QTY | Material |
1 | DOOR PANEL ASSEMBLY | 1 | STEEL |
2 | COAMING ASSEMBLY | 1 | STEEL |
3 | STIFFENER BAR | 1 | STEEL |
4 | DOG LEVER ASSEMBLY | 1 | STAINLESS |
5 | DOG CONNECTOR BAR | 6 | STAINLESS |
6 | HINGE PIN ASSEMBLY | 2 | STAINLESS |
7 | HAND LEVER ASSEMBLY | 1 | STAINLESS |
8 | DOOR GASKET | 1 | NEOPRENE |
9 | BUSHING | 4 | NYLON |
10 | GREASE FITTING | 6 | STAINLESS |
11 | DOOR CENTERING LUG | 1 | STEEL |
12 | LOCKING HASP | 1 | STEEL |
RIGHT/LEFT SINGLE LEVEL (6 DOG) WEATHERTIGHT DOOR SPECIFICATION TABLE | |||||||
MODEL NO. | SIZE | A | B | CUT-OUT DIMS | WEIGHT | ||
A | B | RADIUS | LBS. | ||||
DF-630-2460 | 24×60 | 24" | 60" | 27" | 63" | 11" | 437 |
DF-630-2472 | 24×72 | 24" | 72" | 27" | 75" | 11" | 451 |
DF-630-2866 | 28×66 | 28" | 66" | 31" | 69" | 11" | 448 |
DF-630-2872 | 28×72 | 28" | 72" | 31" | 75" | 11" | 526 |
DF-630-3054 | 30×54 | 30" | 54" | 33" | 57" | 11" | 433 |
DF-630-3060 | 30×60 | 30" | 60" | 33" | 63" | 11" | 480 |
DF-630-3072 | 30×72 | 30" | 72" | 33" | 75" | 11" | 500 |
DF-630-3666 | 36×66 | 36" | 66" | 39" | 69" | 11" | 535 |
DF-630-3672 | 36×72 | 36" | 72" | 39" | 75" | 11" | 579 |
Our offshore wind resistant steel weathertight door withstands category-rated high winds, heavy rain, and turbulent sea spray, delivering reliable weathertight sealing to prevent water ingress in severe marine conditions, minimizing operational downtime and safety risks for your projects.
Fabricated with heavy-duty steel door panel and coaming assembly, reinforced with a built-in stiffener bar, it offers exceptional impact resistance. Critical moving components adopt 304 stainless steel, ensuring superior saltwater corrosion resistance, extending service life and reducing maintenance costs.
The innovative single lever 6 dog weathertight door design enables one-person quick opening and closing, with 6-point uniform locking to ensure consistent sealing pressure across the door frame, eliminating gaps and improving operational efficiency for marine crews.
Equipped with a high-performance neoprene door gasket, it delivers airtight and watertight performance, while nylon bushings and stainless steel grease fittings ensure smooth, long-term operation of hinges and locking mechanisms with minimal maintenance.
This wind resistant steel weathertight door operates via a centralized single lever linkage system. When the hand lever is engaged, it drives the dog lever assembly and 6 stainless steel dog connector bars simultaneously, moving all locking dogs into uniform contact with the door coaming. This creates even, consistent compression on the neoprene gasket, forming a 360° watertight and weathertight seal. The door centering lug ensures precise alignment during closing, while the stainless steel hinge pin assembly with grease fittings enables smooth, friction-free rotation, and the locking hasp provides additional security against unauthorized access.
Precisely verify cut-out dimensions match the selected model before installation, ensuring the opening is level and plumb to avoid sealing gaps.
Weld the steel coaming assembly securely to the ship’s bulkhead or offshore structure, with continuous welding to prevent water penetration and structural loosening.
Inspect the neoprene gasket before each use, replacing it immediately if cracking, deformation, or wear occurs to maintain weathertight performance.
Lubricate hinge pins, locking mechanisms, and grease fittings every 3 months with marine-grade grease to ensure smooth operation and prevent corrosion.
Conduct regular pressure testing and visual inspections to comply with marine industry safety standards.
Yes. We offer custom dimensions, left/right opening orientation, and additional locking configurations to meet the specific requirements of your ship or offshore project.
Absolutely. All critical moving components use stainless steel, and the steel structure can be treated with marine-grade anti-corrosion coating, making it ideal for saltwater offshore and marine environments.
For bulk orders, the standard lead time is 15-25 working days, with expedited production available for urgent shipbuilding and offshore engineering projects.
The DF-274-5 2 DOG RAISED WATERTIGHT HATCH is a premium marine deck fitting engineered by HEE (Changshu HaiChuan Engineering & Equipment Co., Ltd.), a leading China-based manufacturer specializing in marine and offshore equipment. Designed to address the critical need for reliable water resistance in harsh marine environments, this hatch serves as a protective barrier for deck openings, preventing water ingress, dust accumulation, and corrosion that could damage internal components of vessels, offshore platforms, or port infrastructure.
