Name: Anti Explosion Barge Launching Airbags 5m 30m Marine Rubber Airbags For Haul Out
Brand: DOOWIN MARINE
Price: 900 USD

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Anti Explosion Barge Launching Airbags 5m - 30m Marine Rubber Airbags For Haul Out

Categories	Ship Launching Airbags
Brand Name:	DOOWIN MARINE
Model Number:	QG6,QS10,QS11,ect.
Certification:	CCS,ABS,LR,BV
Place of Origin:	China
MOQ:	1pc
Price:	USD$900 - $ 10290
Payment Terms:	T/T
Supply Ability:	10pcs/per week
Delivery Time:	2~3 weeks
Packaging Details:	Pallet or Plywooden Box
Product name:	Marine Rubber Airbags
Material:	Synthetic tire cord & Rubber layers
Color:	Black
Length:	5 ~ 30m
Diameter:	0.8m ~ 3m
Usage:	Ship launching,landing and slvage,Protect Boat.
Standard:	ISO14409
Packing:	As per customer's requirements
Warranty period:	2 Years
Technology:	High Pressure,Whole Wrapping,anti-explosion type.
Life:	6-10 years

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QINGDAO DOOWIN MARINE ENGINEERING CO., LTD.

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Anti Explosion Barge Launching Airbags 5m - 30m Marine Rubber Airbags For Haul Out

Marine Rubber Rollers Bags, Ship, Vessel and Barge Drydocking Airbags (Balloon) for Launching and Haul out

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 heavy-duty rubber airbags are widely used in loading, floating, lifting, and moving sunken ships, as well as salvaging stranded boats.

Ship launching using marine rubber airbags

Ship launching using marine airbags represents an innovative ship-launching technology that overcomes the disadvantages of traditional methods like "end-on launching", "side ship launching", and "float-out". 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 continuous innovation in design, material usage, and manufacturing technologies ensures the highest levels of 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, with the largest vessel launched weighing up to 100,000DWT.

Launching Air Bags Type and Model

Ship Launching airbags are categorized by bearing capacity per meter in length, with the number of synthetic-tire-cord layers determining the Safety Working Pressure:

QP - Ordinary airbag with 3, 4, or 5 cord fabric layers
QG - High-bearing capacity airbag with 6, 7, or 8 layers of cord fabric
QS - Superhigh-bearing capacity airbag with 9, 10, or more layers of cord fabrics

Example model: QG6/1.5x15
QG6: 6 layers of cord fabric + 1 rubber layer
1.5: Diameter is 1.5m
15: Effective length is 15m

Structure of Ship Launching Airbags

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 at the end shoulders for reinforcement.

Synthetic-tire-cord layer

This reinforcement layer consists of rubber-coated synthetic-tire-cord fabrics twined at ideal angles using patented "Holistic Wrapping Technology" to evenly distribute stress and maintain internal pressure. We use 1400 dtex/2 or 1400 dtex/3 type synthetic-tire-cord fabric with over 95 cords per 100mm width and breaking strength exceeding 310N per cord.

Inner and Outer Rubber

Both rubber layers undergo rigorous testing to meet international standards. The outer layer protects cord layers from abrasion and environmental factors, featuring compounds with exceptional tensile and tear strength for harsh conditions.

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).

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 Parameters

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

Why Our Ship Launching Airbags ?

Superior Manufacturing & Quality Control Processes from the selection of raw materials to the highly skilled production process.

DOOWIN Marine Airbags manufacturing process

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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

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

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