Cement grinding aid is a kind of chemical additives can improve cement grinding effect and performance, can significantly improve the cement production, every period cement strength, were to improve its liquidity.Cement grinding aid can greatly reduce the grinding ball phenomenon formed in the process of electrostatic adsorption package, and can reduce the grinding of ultrafine particles in the process of coalescence trend again.Cement grinding aid can significantly improve the liquidity of cement and improve the mill grinding effect and efficiency of classifier choose powder, so as to reduce the energy consumption of grinding.Using grinding agent in the production of cement with a low compaction trend of coalescence, which benefits the loading and unloading of cement, and can reduce the phenomenon of wall hanging cement silo.As a kind of chemical additives, grinding agent can improve the cement particle distribution and hydration, so as to improve the early strength cement and later strength. Cement Grinding Aids,Grinding Aid,Grinding Aid For Cement Mill,Grinding Aid For Cement Production NINGBO LUCKY CHEMICAL INDUSTRY CO. LTD , https://www.nbluckychemical.com
Product Description
Marine shipping airbags
1.Product Introduction
Marine rubber shipping airbags also known as rubber airbag, ship launching airbag, ship salvage airbag, inflatable airbag, ship lifting bag, air balloon, made by rubber &Â multi-layer of rubber-dipped tyre fabric.
Marine rubber ship launching airbags meet the CB/T3837 and CB/T 3795 requirements
Rubber airbag are widely used in launching and landing ship/ boat/vessel, lifting and moving heavy goods, salvaging stranded boats.Marine airbags are very popular with shipyard, ship owner, and marine supplies company now.
Marine rubber shipping airbags characteristics:
1.High strength:The polyamide cord thread for airbag is produced with high tension reinforced fiber.A cord thread has the strength more than 320N, and the cord fabric has consistent and reliable quality.Our company developed and manufactured high strength airbags with the higher strength steel wires and aramid fiber as skeleton materials on customers' request.
2.Wear resistance and anti-aging:An airbag often works in extreme conditions, for example, it is soaked in sea water, insolated in the direct sunlight and rolled in sand.Our marine is produced with natural rubber in a reasonable formula.The practice proves that airbag has high wear resistance and anti-aging ability, and the service life as long as 8-10 years.
3.Good air tightness:Our Company use high quality rubber, as material and the advanced manufacture process to assure that our products have good air tightness, especially air tightness of the assisted floated airbag.Our airbag can keep its pressure 24 hours with work pressure, the pressure will reduce less than 3%.
4.Safety and reliability:Giyo marine airbag with the optimized structure design has the safety coefficient of 4-6 times, namely that its bursting pressure is 4-6 times its work pressure.Our airbag has a multi-channel airbag mouth to enhance the strength and air tightness between the airbag body and mouth.
Type and normal size of marine airbag
Type
Number of fortifying fiber layers
Demeter range
Normal lengths
Main usage
HT-3
3
D=0.8m,1.0m,1.2m,1.5m,1.8m,2.0m
5-18m
Suitable for the small ships up to slipway and launching as well as transportation of objects
HT-4
4
D=0.8m,1.0m,1.2m,1.5m,1.8m,2.0m
5-18m
Suitable for the larger ships up to slipway and launching as well as transportation of objects
HT-5
5
D=0.8m,1.0m,1.2m,1.5m,1.8m,2.0m
5-18m
Suitable for the lager and medium size ships up to slipway and launching as well as transportation of objects
HT-6
6
D=0.8m,1.0m,1.2m,1.5m,1.8m,2.0m
5-18m
Suitable for the size ships up to slipway and launching as well as transportation of objects (Â according to the vessel's actual size)
HT-7
7
D=0.8m,1.0m,1.2m,1.5m,1.8m,2.0m
5-18m
HT-8
8
D=0.8m,1.0m,1.2m,1.5m,1.8m,2.0m
5-18m
Note:Other sizes are also available 
Parameters and performance of  the marine airbag
Type
Safety working pressure
D=0.8m
D=1.0m
D=1.2m
D=1.5m
D=1.8m
D=2.0m
HT-3
0.13Mpa
0.10Mpa
0.09Mpa
0.07Mpa
0.06Mpa
0.05Mpa
HT-4
0.17Mpa
0.13Mpa
0.11Mpa
0.09Mpa
0.08Mpa
0.07Mpa
HT-5
0.21Mpa
0.17Mpa
0.14Mpa
0.11Mpa
0.09Mpa
0.08Mpa
HT-6
0.25Mpa
0.20Mpa
0.17Mpa
0.13Mpa
0.11Mpa
0.10Mpa
HT-7
0.30Mpa
0.25Mpa
0.20Mpa
0.15Mpa
0.13Mpa
0.12Mpa
HT-8
0.33Mpa
0.28Mpa
0.23Mpa
0.18Mpa
0.15Mpa
0.14Mpa
Different Layers Shipping Airbags for Ship or Boat Launching (HT-7)
Model NO.: HT-7
Layers: Form 3-9 or More
Working Pressure: Depends on Different Size
Guaranteed: 12 Months
Technology: High Pressure Anti-Explosive
Accessory: Pressure Gauge,Joint,Valves,Pulling Rings
Weight: Depends on Different Size
Usage: Ship Salvage, Launching and Landing
Shipping Airbags Package: Pallet
Trademark: Hantian
Transport Package: Pallet
Specification: CCS
Origin: Zhejiang, China
HS Code: 4016950000