1.Usage of Marine AirbagsShip Launching Marine Airbags, also known as roller bags or ship launching rubber balloon, are made of heavy-duty synthetic-tire-cord layers with inner and out rubber layers in long cylindrical balloon shape. Marine Airbags for Ship Launching and Dry Docking for barge can be used for Shipyard especially for barges launching, pull to shore, vessels' haul out and ship landing work. 2.Construction Features Marine rubber airbags' body include outer layer ,inner layer and synthetic-tire-cord layer. Q1:What's the material of your products?  A:Our raw material is natural rubber, and rubber-dipped nylon cord fabric  Q2:Are you factory or trading company?  A:We are the company and factory,located in Jimo City,Qingdao,near to Qingdao port and Qingdao airport,which is convenient for transportation.  Q3:Can you do OEM?  A:Yes,we can do.As long as receive your request,we could produce accordingly.  Q5:How can I get samples from you?  A:We are honored to provide you samples for check quality.Customers just confirm freight collect and then we could send out the sample by FedEx,DHL,UPS,TNT and so on.  Q6:What's certificates can your company provide?  A:We can provide CCS,ABS,DNV,LR,BV certificates.  Q7:What about your warranty time?  A:Our warranty period is 24 months.During this time,any problems about products from our factory,we solemn promise to change and repair them for free;if problems from customers' improper operating,we could provide free guidance and repair materials.
The common material of low-pressure casting is A356\ZL101\ZL101A,this kind of material is usually applied to auto part, storage part,transformation part,etc.
The pressure on the surface of the molten metal is 0.06~0.12Mpa.This processing has good shrinkage, casting tissue is dense, easy to produce the large thin-walled complex parts, the casting head is not needed , metal yield can be up to 95%.
Low pressure casting can adopt sand type, metal type, graphite type, etc. The filling process is not only different from gravity casting such as metal casting and sand casting, but also different from high pressure and high speed filling pressure casting, which has the following advantages:
1) Pure metal liquid filling type, which improves the purity of the casting. Because the slag generally floats on the surface of the metal liquid, and the low pressure casting by the metal liquid in the lower part of the crucible realizes the filling through the lifting pipe, which completely avoids the possibility of the slag into the cast cavity.
2) The metal liquid filling type is smooth, reducing or avoiding the turnover, impact and splashing phenomenon of the metal liquid when filling the type, thus reducing the formation of less oxide slag.
3) The casting molding performance is good, the metal liquid filling under the pressure action, can improve the fluidity of the metal liquid, is conducive to the formation of clear outline, smooth surface casting, for the formation of large thin-wall casting is more favorable.
4) The casting crystallizes and solidifies under pressure, which can be fully condensed, and the casting structure is compact.
5) Improve the yield of metal liquid, generally do not need to burst, and the same metal in the lifting tube can be returned to the crucible, reuse, so that the yield of metal liquid greatly increased, the yield can generally reach 90%.
6) Convenient production and operation, good working conditions, high production efficiency, easy to achieve mechanization and automation.
Low pressure casting also has some disadvantages, equipment and mold investment is large; in the production of aluminum alloy casting, crucible and lift pipe long time with metal liquid contact, easy to erosion and scrap, will also make the metal liquid iron and performance deterioration.
Low-pressure Casting Parts,A356 casting parts,A356 low-pressure casting parts,ZL101 casting parts,ZL101 low-pressure casting parts,A356 casting components NINGBO ZHENHAI BOLANG METAL PRODUCT FACTORY , https://www.aldiecastings.com
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All the accessories are free for our clients.
1. End cap/plug at the tightness end ( Q235 H.D.G or Stainless Steel )
2. Rubber Pad at two ends( to strength the tightness)
3. End protective clip at two ends ( Q235 H.D.G or stainless steel )
4. Marine Airbags BodyÂ
5. Safety Air inflate at one end and Air Tightness Swivel at the other end ( Q235 H.D.G or stainless steel)
6. Three-direct-link at the inflate end( Q235 H.D.G. Or stainless Steel)
7. 3/4' ball valve (brass)Â
8. Hose connection at the inflate end (Q235 H.D.G or stainless steel)Â
9. High quality Pressure Gauge at the inflate end
3.Specification&Capacity of regular size-6layers:
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Diameter
Safty Working Pressure
Working Height
Capacity
KN/m
Ton/m
Layer-6
D0.8m
0.24MPa
0.5m
122.4
12.9
D1.0m
0.22Mpa
0.6m
131.95
13.46
D1.2m
0.18MPa
0.7m
141.37
14.43
D1.5m
0.14MPa
0.9m
131.95
13.46
D1.8m
0.12MPa
1.1m
131.95
13.46
D2.0m
0.10MPa
1.1m
155.51
15.87
D2.5m
0.10MPa
1.3m
162.34
16.41
5.Testing and Quality:
We are very focused on the quality and invest advanced inspection equipment. 100%Â inflatable rubber airbags, hould be tested and inspected as per the requirement of CB/T 3795. Non conformed products are immediately rejected by Quality Control. The widely usage have been tested under rough condition. Our many satisfied customers are our best reference.
Evergreen welcomes inspection by its customer's quality assurance departments and to their appointed agencies as CCS, Lloyd's, DNV, or ABS.
To understand the whole Heavy Lifting /Â Caisson Launching process, please refer to our website http://www.evergreenmaritime.com/
4.FAQ
 Q4:What's your delivery time and payment terms?
 A:Delivery time is according to customers' size and order qty.The payment terms you could choose are T/T,L/C at sight,Western Union and so on.
For more details,please contact us directly:
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Ada /marketing manager
Mob:+8617663929366Low-pressure casting was the earliest anti-gravity casting technology, which was first used in industrial production in the 1940s. Nowadays, low-pressure casting is mainly used in the production of aluminum alloy and magnesium alloy parts, such as the automotive hub of the automobile industry, the cylinder body, cylinder head, piston, missile shell, impeller, air guide wheel and other castings with complex shapes and high quality requirements.
Model NO.: YT-6
Effective Length: 6-18m
Total: 7-19.5m
Size: D1.5XL12
Material: Rubber
Marine Parts: Airbag
Usage: Ship Launching, Ship Docking
Certification: ISO9001, CCS,Lr,ABS,BV
Delivery: on Time
Trademark: EVERGREEN
Transport Package: Standard Packing
Specification: YT-6
Origin: China
HS Code: 40169500
 Marine Lifting Rubber Marine Airbag Dia 2m