Orange Silica Gel for Drying and Adsorbing Moisture

Model NO.: 2-4mm, 3-5mm
Certificate: ISO9001: 2000
Trademark: JINCHENG
Transport Package: 25kgs/Plastic Bag,or 25kgs/Plastic Drum,Palletized
Specification: 1-3mm, 2-4mm, 2-5mm, 3-5mm, 4-8mm
Origin: China
HS Code: 3824909990
Silica Gel -Indicating Orange, its main component is silicon dioxide and its color varies with the humidity. With the exception of blue silica gel's performance, it also has characters of cobalt chloride free, non-toxic, odorless, harmless, etc.
Its molecular formula is: SiO2 + H2O + C25H30CLN3

Performance and Usage

In 1998, the European Union has identified the cobalt chloride as carcinogens in the second category. Blue silica gel with cobalt chloride in Europe and the United States has been banning to produce, and it has a tendency to be eliminated gradually. In order to adapt to market's needs, our company developed orange silica gel without cobalt chloride.
The product can be used alone or be mixed with other silica gel. To dry and indicate the humidity, we can place appropriate amount of the goods in appropriate containers or packaging to achieve this purpose.

This product is mainly used for drying, instructing the degree of drying or humidity, and widely used in precision instruments, pharmaceuticals, petrochemicals, food, clothing, leather, home appliances and other industrial gases, etc. It can also be used for domestic purposes such as moisture proofing and dehumidifying.
Orange silica gel has a strong capacity of absorption moisture. During the process of absorption moisture, the appearance of the color changes obviously according to the hygroscopic capacity. So it's often called "humidity indicator. "

Product Specification
1-3mm, 2-4mm, 2-5mm, 3-5mm, 4-8mm

25KG/bag, 500KG/bag, Plastic bag, Compound bag, One Ton/bag.

Packaging and Storage
Orange silica gel has a strong capacity of absorption moisture. Therefore it should be stored in a dry place, with shelves or pallets between the ground and the goods. Packaging Material has steel drum, paper can, carton, plastic bottle, polyethylene plastic compound bag, flexible container bags, etc. During transportation, it should keep away from the rain, the damp and exposure.

Superior Class First Class Qualified Class
RH=20%,% ≥ 12 10 8 9
RH=35%,% ≥ 20 18 15 17
RH=50%,% ≥ 27 24 20 25
RH=90%,% ≥ 40 36 30 35
Rattler Loss,%≤ 10 10 10 10
PH Value 2-4 2-4 2-4 4.0
Specific Resistance ,Ω.cm ≥ 5000 3500 3000 3500
Silica ,% ≥ 98.2 98 98 98
Qualified Ratio of Spherical Granules ,% ≥ 95 90 80 85
Ratio of Size Qualified ,% ≥ 100 99.5 90 97
Moisture Content,% ≥ 1.5 2.0 5.0 5.0
Bulk Density, g/ml 0.78 0.75 0.70 0.76
Color RH 20% ≥ Light Yellow
RH 35% ≥ Light Green
RH 50% ≥ Light Dark Green
Original Color Orange
Notes: The value of qualified ratio of spherical granules is just applicable to the qualified ratio of silica gel spherical granule.

Product description of square tube
Square pipe is a kind of hollow square section light thin-walled steel pipe, also known as steel cooling bend profile.It is the shape of the shape of the square section shaped by high frequency welding, which is made of hot rolled or cold rolled strip steel or rolled plate.In addition to thickening thickness of the wall thickness of the hot-rolled wall, the angular dimension and the horizontal straightness of the wall have reached even more than that of the resistance welding.Comprehensive mechanical properties, welding properties, cold, hot processing properties and corrosion resistance are all good, and have good low temperature toughness.
Square pipe application
The purpose of the square tube construction, machinery manufacturing, steel construction projects, shipbuilding, solar power stents, steel structure engineering, electric power engineering, power plants, agricultural and chemical machinery, glass curtain wall, automobile chassis, airport, the boiler construction, highway railings, housing construction, pressure vessel, oil tank, bridge, power station equipment, lifting transportation machinery and other high load of welded structure, etc.






3-12m or according to per request




Q195-Grade B, SS330, SPC, S185

Q215-Grade C,CS Type B, SS330, SPHC

Q235---Grade D, SS400, S235JR, S235JO, S235J2

Q345---SS500, ST52, ST37

10#,20#,45#, etc



Surface treatment

1, Oiled
2, Galvanized
3, 3PE Anti-corruption coated

4, Painting black
5, According to the customers` requirement


Widely used in mechanical, manufacturer, steel structure, decoration, shipbuilding, bridging and automobile chassis, etc




1, Big OD: in bulk

2, Small OD: packed by steel strips

3, Plastic bags

4, According to customer`s requirements


Normally 10-20 days after get deposits or according to quantity



1, reasonable price with excellent quality

2, abundant stock and prompt delivery

3, rich supply and export experience, sincere service

square tube

square steel pipe

Square Steel Pipes

Square Steel Pipes,Galvanized Square Steel Pipes,Black Square Steel Pipes,Hot-Dipped Square Steel Pipes