Welcome to Ecer
Ecer asks for your consent to use your personal data to:
Personalised advertising and content, advertising and content measurement, audience research and services development
Store and/or access information on a device
Your personal data will be processed and information from your device (cookies, unique identifiers, and other device data) may be stored by, accessed by and shared with 135 TCF vendor(s) and 65 ad partner(s), or used specifically by this site or app.
Some vendors may process your personal data on the basis of legitimate interest, which you can object to by do not consent. Contact our platform customer service, you can also withdraw your consent.
Consent Do not consent
China factories

Chat Now Send Email
China factory - QINGDAO DOOWIN MARINE ENGINEERING CO., LTD.

QINGDAO DOOWIN MARINE ENGINEERING CO., LTD.

  • China,Qingdao
  • Verified Supplier
  1. Home
  2. Products
  3. About Us
  4. Contact Us

Leave a Message

we will call you back quickly!

Submit Requirement
  1. Home>
  2. Ship Launching Airbags>
  3. Black Ship Launching Air Balloon Marine Airbags Customized Size
China Black Ship Launching Air Balloon Marine Airbags Customized Size
China Black Ship Launching Air Balloon Marine Airbags Customized Size

  1. China Black Ship Launching Air Balloon Marine Airbags Customized Size
  2. China Black Ship Launching Air Balloon Marine Airbags Customized Size
  3. China Black Ship Launching Air Balloon Marine Airbags Customized Size
  4. China Black Ship Launching Air Balloon Marine Airbags Customized Size
  5. China Black Ship Launching Air Balloon Marine Airbags Customized Size
  6. China Black Ship Launching Air Balloon Marine Airbags Customized Size

Black Ship Launching Air Balloon Marine Airbags Customized Size

  1. MOQ： 1pc
  2. Price： USD$699~8959
  3. Get Latest Price
Payment Terms T/T
Supply Ability 10pcs/per week
Delivery Time 2~3 weeks
Packaging Details Pallet or Plywooden Box
Product name Ship Launching Air Balloon
Material Synthetic tire cords
Application salvage,heavy lifting,Ship launching,Marine/quay/dock/boat,Ship Launching/landing/lifting
Part Ship Launch Rollers
Color Black
Size Customized Size,Customer's Ruquirement,2m x 24m or as per customer's request,accoring to requirements,1.5m x 15m
Diameter 0.8 ~ 3m
Usage Ship launching,landing and slvage,Protect Boat,moving/lifting/landing /launching,Boat Fender
Standard CB/T-3837,ISO14409,CB/T-3795,ISO Standard,ISO 14409
Packing Standard packaging, pallet or as per customer's requirements
Warranty period 2 Years
Technology High Pressure,Whole Wrapping,anti-explosion type. Whole-wrapping technology,Whole Intertwine technology,Explorsion Proof
Length 5 ~ 30m
Design using life 6-10 years
Brand Name DOOWIN MARINE
Model Number QP4,QP5,QG6,GQ7,QG8, QS 9,QS10,QS11,QS12
Certification CCS,ABS,LR,BV
Place of Origin China

View Detail Information

Inquiry by Email Get Latest Price
Chat online Now Ask for best deal

Explore similar products

  1. China Heavy Duty Ship Launching Marine Rubber Airbags ISO 14409 Compliant

    Heavy Duty Ship Launching Marine Rubber Airbags ISO 14409 Compliant

    Chat online Now
  2. China High Pressure Vulcanized Ship Launching Marine Airbags Pneumatic Lifting Bags

    High Pressure Vulcanized Ship Launching Marine Airbags Pneumatic Lifting Bags

    Chat online Now
  3. China ISO 14409 Certificated Heavy Duty Marine Rubber Ship Launching Airbags

    ISO 14409 Certificated Heavy Duty Marine Rubber Ship Launching Airbags

    Chat online Now
  4. China China Wholesale Heavy Duty Air Bags For Lifting Heavy Loads Rubber Boat Lift

    China Wholesale Heavy Duty Air Bags For Lifting Heavy Loads Rubber Boat Lift

    Chat online Now
  1. Product Details
  2. Company Details

Product Specification

Payment Terms T/T Supply Ability 10pcs/per week
Delivery Time 2~3 weeks Packaging Details Pallet or Plywooden Box
Product name Ship Launching Air Balloon Material Synthetic tire cords
Application salvage,heavy lifting,Ship launching,Marine/quay/dock/boat,Ship Launching/landing/lifting Part Ship Launch Rollers
Color Black Size Customized Size,Customer's Ruquirement,2m x 24m or as per customer's request,accoring to requirements,1.5m x 15m
Diameter 0.8 ~ 3m Usage Ship launching,landing and slvage,Protect Boat,moving/lifting/landing /launching,Boat Fender
Standard CB/T-3837,ISO14409,CB/T-3795,ISO Standard,ISO 14409 Packing Standard packaging, pallet or as per customer's requirements
Warranty period 2 Years Technology High Pressure,Whole Wrapping,anti-explosion type. Whole-wrapping technology,Whole Intertwine technology,Explorsion Proof
Length 5 ~ 30m Design using life 6-10 years
Brand Name DOOWIN MARINE Model Number QP4,QP5,QG6,GQ7,QG8, QS 9,QS10,QS11,QS12
Certification CCS,ABS,LR,BV Place of Origin China
High Light Black Ship Launching Air Balloon ，Ship Launching Air Balloon Marine Airbags ，Marine Airbags For Ship Launching
Ship Launching Air Balloon Marine Airbags Ship Launch Rollers For Sale
Heavy lifting air bags, known as marine rubber airbags or ship launching balloons, are made of heavy-duty synthetic-tire-cord layers with inner and outer rubber layers in a long cylindrical balloon shape.
The heavy lifting airbag is updated based on the ship launching airbags, making them more suitable for heavy lifting and moving work. These airbags have a different structure from ship launching airbags and can roll steadily when taking the load, unlike inferior products which are prone to twisting.
As one of the toughest pneumatic lifting airbags available, they can be used for heavy lifting and moving of huge structures, caissons, buildings, and more. Each heavy lifting airbag can reach a lifting capacity of over 1,000 tons.
Heavy lifting airbag specifications
Why Choose Marine Heavy Lifting Air Bags
Superior manufacturing and quality control processes from raw material selection through the highly skilled production process ensure reliable performance.
Heavy lifting airbag manufacturing process
 
Heavy Lifting Airbags Performance
Lifting Capacity Principle
The bearing capacity of ship launching airbags is calculated based on working pressure and contact area, with working pressure determined by burst pressure and safety working factor.
Due to the flexibility of rubber airbags, contact area is affected by various factors including carried ship condition and position relative to gravity center during launching and landing, causing bearing capacity to vary.
F=PS
S=π x (D-H)/2
Where:
F = bearing capacity
P = working pressure
S = contact area
P = percentage of deformation (%)
D = original diameter of the air bag (m)
H = height of the compressed air bag (m)
Lifting capacity calculation diagram
Performance Parameters of Heavy Lifting Airbags
Type No. Diameter (m) Initial Internal Pressure for Test (kPa) Rated Working Pressure (kPa) Bearing Capacity at 70% compress deformation (KN/m) Minimum Burst Pressure (kPa)
QP5 0.8 48 210 184 630
1.0 35 170 186 510
1.2 28 140 185 420
1.5 20 110 181 330
1.8 16 90 178 270
2.0 14 80 176 240
Heavy Lifting Air Bags Classification
Our engineering team constantly improves the Structure of Typical Air Bags
Structure of marine rubber airbags
Standard Heavy Lifting Airbag Components
  • The end of the airbag body
  • End flange (Q235 H.D.G)
  • Sealing Washer
  • Three-direction connector at the inflate end (Q235 H.D.G)
  • 3/4′ Ball Valves at the inflate end (Brass)
  • Hose connection at the inflate end (Q235)
  • High-quality Pressure Gauge
  • End plug at the tightness end (Q235 H.D.G)
Classification of Heavy Lifting Airbags
Heavy lifting airbags are categorized by bearing capacity per meter in length, with layer count determining Safety Working Pressure. Custom types are available upon request.
  • QP - Ordinary airbag with 3, 4 or 5 layers of cord fabric
  • QG - High-bearing capacity with 6, 7, or 8 layers of cord fabric
  • QS - Superhigh-bearing capacity with 9, 10, or more layers of cord fabrics
Example: QG6/1.5*15
QG6: 6 layers cord fabric
1.5: diameter is 1.5m
15: length is 15m
Air Bag Parameter Ship Launching Air Balloon Marine Airbags
Product Name Ship Launching Balloon
Diameter (D) 0.8 ~ 3m, or customized diameter
Effective Length (EL) 5~ 30m, or customized length
Total Length (TL) 7 ~ 32m, or customized length
Loading Capacity 10 ~ 40 ton/m, or customized capacity
Model of Airbags QP-ordinary, QG-high-bearing, QS-superhigh bearing

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

  • 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...

+ Read More

Get in touch with us

  • Reach Us
  • QINGDAO DOOWIN MARINE ENGINEERING CO., LTD.
  • Xiazhuang Industry Park, Chengyang, Qingdao, China
  • https://www.shiplaunchingairbags.com/

Leave a Message, we will call you back quickly!

Email

Check your email

Phone Number

Check your phone number

Requirement Details

Your message must be between 20-3,000 characters!

Submit Requirement

Trade Alert - Delivering the latest product trends and industry news straight to your inbox.

Home Categories About Us
RFQ Report IPR products Privacy Policy Sitemap

© 2026 Chinax.com. All rights reserved.