All DooFlex Open Bottom parachute type air lifting bags are fabricated of heavy duty polyester cloth coated with PVC.Open Bottom Parachute Air Lift Bags has safe working load of 6:1. Each open bottom air lifting bag is equipped with inverter lines, manual air dump relief/dump valve, which can be controlled easily to change the buoyancy by the bottom rope. And certificated heavy duty polyester webbing with end shackles, and air inlet stainless/ brass ball valves are equipped for the lifting operation. Each parachute type lifting bag is complete and ready for use when leaving our manufacturing facility.

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FAQ
1. Q: How long is the warranty period?
    A: The warranty period is 12 months or 18 months from the shipping date.

2. Q: Do you provide rent service, contract service?
    A: We have many water bags and air lift bags ready for rent service for clients all over the world.
        We have ability to design and can contract the load testing project, with our own water bags and  workers.

3. Q: What is the production standard and safety factor?
    A: All underwater air lift bags are manufactured in compliance with IMCA D016, safety factor is  5:1.
        All crane load test water bags are manufactured in compliance with LEEA051, safety factor is 6:1.

4. Q: Do you have stock?
    A: We have many normal size underwater air lift bags and load test water bags in stock. Ready for shipment.

5. Q: What kind of certificate do you provide?
    A: Our load test water bags are Type Certificated by TUV NEL. We can provice ABS, BV, LR third party certificate.
         Provide the certificate for masterlink, shackles, lifting belts and other accessories.

If you have any other questions, please feel free to contact us.