Welcome you visit DOOWIN
Chinese Pioneer and Leader
Largest Professional Manufacturer
The Chinese largest professional manufacturer of water weight bags, lifeboat test water bags.
DOOWIN is the unique professional manufacturer of underwater air lifting bags, pipeline buoyancy bags, marine salvage airbags.
DOOWIN Load Test Water Weight Bags
Highest Performance Water Bags Certificated
DOOWIN load test water weight bags are manufactured with the highest quality PVC coating fabric material. DOOWIN water load bags are type certificated by drop test, which proven factor of safety in excess of 6:1. Our water weight bags are manufactured and tested comply with Lifting Equipment Engineers Association (LEEA) 051 Guidance, BV, LR, ABS certificated.
How to choose the best quality water bags?
Type Certificated by Drop Test
Comply with LEEA 051
DOOWIN load test water bags are designed manufactured, tested and certificated in 100%
compliance with LEEA 051 guidelines. There are several key elements.
- Lifting set should separate from water bags. Comprised several elements should share
the load. Each element should be manufactured comply with relevant BS standard.
- The safety factor of each type and size water bags should be proven via drop
test to at least 6 times the working load limit.
- Every water bags should be verified via either inflation of the water bags to
pressure in the range to 0.25~0.5 bar and then visual check of welded seams
for integrity and no leakage, or via a proof (drop) test to at least 2 times the WLL.
Professional Cast Quality
Excellent quality water bags and reliable service, they deliver exactly what they agree to and perfectly on time.
Awesome to use DOOWIN buoyancy bags for our Aramco project. Its quality completely can be comparable with UK products.
We have confident with DOOWIN. They can help us with innovative solution, well prepared to accommodate to our request.