DOOWIN is Chinese leading professional manufacturer of air lift bags and water filled weights bags. All underwater lift bags are made and tested in comply with IMCA D016 guidance. All water weights bags are made and tested in comply with LEEA 051 guidance. We also produce other flexible products of PVC/ TPU coating fabric like inflatable pipeline buoyancy bags, water bladder tanks, inflatable boat fenders and buoys, inflatable pipe plugs…
DOOWIN air lift bags have parachute open bottom type, cylindrical enclosed type, pillow type, and other customized shapes. The lifting bags can be used for diving work, marine salvage and refloating operation, pipeline layering buoyancy support. DOOWIN crane test weights bags can be used for the proof load testing for crane, davit, lifeboat, and other lifting equipment. With a good reputation with top quality and good service, DOOWIN is considered the first choice by suppliers, contractors, and end-users in the Diving, Maritime, Oil and gas, Offshore Shipping, and other industries.
Our engineers and consultants have been in fabrication and use these products for more than 30 years. DOOWIN has clients all over the world. Our products passed rigorous ISO 9001:2008 Quality Management System, approved by the third party SGS, BV, CCS, ABS, LR, BV.
Quality Assurance
DOOWIN water weight load testing bags passed drop test type certificated by TUV.
It is the highest industry standard to prove 6:1 safety factor comply with LEEA 051.
All our proof load bags and inflatable lifting bags meet the standard of LEEA 051 and IMCA D016.
ISO 9001:2015
All production is under control of ISO 9001:2015 quality management.
Third Party Certificate
Third party BV, ABS, LR inspected and proved according to request.
UK TUV NEL Drop Test
Our water weights bag pass the industry highest test standard.
Hydraulic Blasting Test
To know its maximum burst pressure and to well know its performance.
WHY DOOWIN?
Build for Performance
PVC coating fabric material is basic to ensure water weights bag and underwater lift bags with good performance. DOOWIN use the high strength material with SGS certificated, better than any other suppliers in China.
Professional Cast Quality
Excellent quality water bags and reliable service, they deliver exactly what they agree to and perfectly on time.
Stephen Barnett, MODEC (Singapore)
Awesome to use DOOWIN buoyancy bags for our Aramco project. Its quality completely can be comparable with UK products.
Dr.Chen Haijun, China Harbour (Aramcot)
We have confidence with DOOWIN. They can help us with an innovative solution, well prepared to accommodate to our request.
Hugo Silva (Project Manager), McDERMOTT
