QINGDAO DOOWIN MARINE ENGINEERING CO., LTD.
| Type | Enclosed/Open Bottom Parachute Type |
| Application | Lifting from Seabed to Surface |
| Production Standard | IMCA D-016 |
| Safety Factor | 5:1 |
| Strops WLL Factor | 7:1 |
| Valves | Dump Valves on Top |
| Capacity | 250kg ~ 100ton |
| Production Technology | HF welding |
| Packaging Details | Pallet or Plywooden Box |
| Delivery Time | 2~3 weeks |
| Supply Ability | 10pcs/per week |
| Brand Name | DOOWIN MARINE |
| Model Number | OBP/ALB |
| Certification | LR, BV, CCS |
| Place of Origin | China |
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Product Specification
| Type | Enclosed/Open Bottom Parachute Type | Application | Lifting from Seabed to Surface |
| Production Standard | IMCA D-016 | Safety Factor | 5:1 |
| Strops WLL Factor | 7:1 | Valves | Dump Valves on Top |
| Capacity | 250kg ~ 100ton | Production Technology | HF welding |
| Packaging Details | Pallet or Plywooden Box | Delivery Time | 2~3 weeks |
| Supply Ability | 10pcs/per week | Brand Name | DOOWIN MARINE |
| Model Number | OBP/ALB | Certification | LR, BV, CCS |
| Place of Origin | China | ||
| High Light | Parachute Type Underwater Air Lift Bags ，Underwater Air Lift Bags Customized ，Underwater Lifting Bags250kg | ||
Versatile Underwater Lifting Solutions
DOOWIN underwater air lift bags are highly versatile tools designed to safely support and lift loads at various depths. With a single-point attachment system, they are perfect for lightening underwater structures like pipes or salvaging vessels from the seabed. These durable bags withstand harsh environments, and larger models can even be surface-towed at speeds up to 1.5 knots in moderate sea conditions.
Safety & Efficiency at the Core
Engineered for maximum lift with minimal height, DOOWIN underwater air lif tbags feature a wide hem design for rapid emergency inversion—enhancing diver safety. The bags automatically vent excess air during ascent, ensuring stable operation regardless of load orientation. Their streamlined rigging reduces shipping weight without compromising strength or safety, making them ideal for challenging subsea conditions like poor visibility and strong currents.
Rigorously Tested for Reliability
Every DOOWIN underwater air lift bags exceeds international standards, including IMCA D-016 compliance. Unique in the industry, DOOWIN conducts drop tests to validate safety factors (7:1 WLL on strops, 5:1 overall assembly) and inverter line performance. Each unit arrives ready for immediate use, complete with certification and an operating manual.
Custom or Standard Solutions
Whether you need an off-the-shelf underwater air lift bags or a custom design, DOOWIN leverages decades of expertise to deliver tailored solutions. Our team collaborates closely with clients to address specific subsea challenges.
Key Features & Benefits
Safety: IMCA D-016; 7:1 WLL strops; independently tested to 5:1 safety factor.
Ease of Use: There are handle ladders on the outside of each air lift bags
Durability: High-tensile polyester canopy with RF-welded seams; 316 stainless steel Camlock valves.
Support: Worldwide service via email/phone; field repair kits for minor damage; ISO 9001 certified manufacturing.
Proven Performance
DOOWIN underwater air lift bags undergo rigorous overload certificated by BV. Our subsea inversion tests ensure bags deploy safely, avoiding high-speed surfacing risks.
Underwater Air Lift Bags Type
Specification of Underwater Air Lift Bags
|
Model |
Capacity |
Max.Diameter (m) |
Filled Height (m) |
Appr. Gross Weight (kg) |
|---|---|---|---|---|
|
OBP-50L |
50 KG |
0.3 |
1.1 |
2 |
|
OBP-100L |
100 KG |
0.6 |
1.3 |
5 |
|
OBP-250L |
250 KG |
0.8 |
1.7 |
7 |
|
OBP-500L |
500 KG |
1.0 |
2.1 |
14 |
|
OBP-1T |
1,000 KG |
1.2 |
2.3 |
24 |
|
OBP-2T |
2,000 KG |
1.7 |
2.8 |
30 |
|
OBP-3T |
3,000 KG |
1.8 |
3.0 |
35 |
|
OBP-5T |
5,000 KG |
2.2 |
3.5 |
56 |
|
OBP-6T |
6,000 KG |
2.3 |
3.6 |
60 |
|
OBP-8T |
8,000 KG |
2.6 |
4.0 |
100 |
|
OBP-10T |
10,000 KG |
2.7 |
4.3 |
130 |
|
OBP-15T |
15,000 KG |
2.9 |
4.8 |
180 |
|
OBP-20T |
20,000 KG |
3.1 |
5.6 |
200 |
|
OBP-25T |
25,000 KG |
3.4 |
5.7 |
230 |
|
OBP-30T |
30,000 KG |
3.8 |
6.0 |
290 |
|
OBP-35T |
35,000 KG |
3.9 |
6.5 |
320 |
|
OBP-50T |
50,000 KG |
4.6 |
7.5 |
450 |
|
OBP-100T |
100,000 KG |
5.7 |
8.7 |
600 |
Company Details
Business Type:
Manufacturer
Year Established:
2011
Total Annual:
3000000-5000000
Employee Number:
60~80
Ecer Certification：
Verified Supplier
Doowin Marine is a professional manufacturer of ship launching airbags, pneumatic rubber fenders, foam-filled fenders, inflatable pipe plugs, and offshore foam buoys. Doowin Marine is the leading manufacturer of ISO 14409:2011 or CB/T 3795 rubber airbags/marine inflatable airbags. Marine rubber airb... Doowin Marine is a professional manufacturer of ship launching airbags, pneumatic rubber fenders, foam-filled fenders, inflatable pipe plugs, and offshore foam buoys. Doowin Marine is the leading manufacturer of ISO 14409:2011 or CB/T 3795 rubber airbags/marine inflatable airbags. Marine rubber airb...
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