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QINGDAO DOOWIN MARINE ENGINEERING CO., LTD.

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City:qingdao

Country/Region:china

Contact Person:MsXiang Sun

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China High-Pressure Marine Rubber Airbags with Customizable Length 8-30m and 100,000DWT Capacity for Shipyard Applications wholesale

High-Pressure Marine Rubber Airbags with Customizable Length 8-30m and 100,000DWT Capacity for Shipyard Applications

Name: HighPressure Marine Rubber Airbags with Customizable Length 830m and 100000DWT Capacity for Shipyard Applications
Brand: DOOWIN MARINE
Price: 1 USD

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Brand Name :DOOWIN MARINE

Model Number :QG8

Certification :BV

Place of Origin :China

MOQ :1pc

Price :USD $1100 ~ $12830

Payment Terms :T/T

Supply Ability :10pcs/per week

Delivery Time :2~3 weeks

Packaging Details :Pallet or Plywooden Box

Usage :Ship launching,landing and salvage,heavy lifting

Number Of Layers :3-12layers, Customized

Material :Tire Cord Rubber

Materia :Natural rubber reinforced cord

Logo :Supported

Specification :Customizable

Accessories :Gauge / End Plug / Valve / Seal Gasket / Short Steel-tube / Three-direction Connector

Long :8-30m

Warranty Period :2 years

Package :Pallet

Approved By :LR,BV,CCS

Name :High-Pressure Marine Rubber Air Bag For Shipyard

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Inflatable Air Lifting Bags High-Pressure Marine Rubber Air Bag For Shipyard

Ship launching airbags, also known as roller bags, launching air balloons, inflatable marine airbags, air lift bags, and salvage bags, are specialized marine rubber air bags used for launching marine vessels, ship landing, or haul-outs. These marine rubber airbags are also widely used in loading, floating, lifting, moving sunken ships, and salvaging stranded boats. Constructed with heavy-duty synthetic-tire-cord layers and inner/outer rubber layers in a long cylindrical balloon shape.

High-Pressure Marine Rubber Airbags with Customizable Length 8-30m and 100,000DWT Capacity for Shipyard Applications

Ship launching or upgrading using marine airbags represents innovative ship-launching technology that overcomes the limitations of traditional "end-on launching", "side ship launching", and "float-out" methods. This flexible technology eliminates restrictions of fixed launching tracks and is increasingly adopted by shipyards worldwide due to its advantages in time savings, cost efficiency, flexibility, and safety.

Our engineering team continuously innovates in design, material usage, and manufacturing technologies to ensure maximum flexibility, safety, and reliability. To date, our ship-launching rubber airbags have successfully launched cargo vessels, barges, chemical tankers, tugboats, AHTS vessels, floating docks, and construction caissons up to 100,000DWT.

All Doowin Marine ship launching airbags are manufactured and tested to fully comply with ISO 14409:2011 (Ships and marine technology -- Ship launching airbags) and ISO 17682:2013 (Methodology for ship launching utilizing air bags).

Ship Launching Airbags Material

Our rubber airbags are constructed with an outer rubber layer, multiple synthetic-tire-cord layers, and an inner rubber layer vulcanized firmly together, with additional layers applied at the end shoulders for enhanced durability.

Inner and Outer Rubber

Both inner and outer rubber layers undergo rigorous testing to meet international standards. The outer rubber layer protects cord layers from abrasion and external forces, featuring compounds with exceptional tensile and tear strength to withstand harsh weather conditions and demanding usage.

Ship Launching Airbags Rubber Material Performance

No.	Test Item	Value	Standard
1	Tensile Strength, Mpa	≥18	ISO 37
2	Elongation at break, %	≥400	ISO 37
3	Hardness, ° (Shore A)	60±10	ISO 7619-1
4	Tear Strength, N/cm	≥400	ISO 34-1
5	Compression set, % (70℃±1℃,22h)	≤30	ISO 815-1
6*	Holding of pull lengthening, %	≥80	ISO 188
7*	Holding of elongation at break, %	≥80	ISO 188
8*	Change of hardness, ° (Shore A)	≤8	ISO 7619-1
9	Static ozone aging at 40℃ x 96h, extension 20%	No crack	ISO 1431-1

Ship Launching Airbags Performance

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
QG6	0.8	56	245	215	740
	1.0	45	200	219	600
	1.2	32	165	217	490
	1.5	25	130	218	390
	1.8	20	110	220	330
	2.0	18	100	220	300
QG7	0.8	64	270	237	810
	1.0	50	220	242	660
	1.2	38	190	251	570
	1.5	29	150	247	450
	1.8	25	130	257	390
	2.0	23	120	264	360
QG8	0.8	70	300	264	900
	1.0	54	240	264	720
	1.2	45	210	277	630
	1.5	32	170	280	510
	1.8	29	150	297	450
	2.0	26	140	308	420

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