STA the material is high borosilicate 3.3. And the working temperature is 450-500C.Borosilicate 3.3 series glass
is a kind of special type glass material with the features of low expansion coefficient,high temperature resistance,
high intensity, high rigidity, transparency and chemical stability. It doesn't explode in high temperature, and can
be forged and drawn to variety of formation when soften.
The features as below :
1.)Test tube with round bottom and flat bottom.
2.)Rim: with rim or without rim
3.)Material: borosilicate 3.3 or borosilicate 4.0
Products description :
1.) Premium quality glass tubes are produced from borosilicate glass that provides excellent chemical resistance and durability. Clear Borosilicate glass test tubes can be used for chemical experiments as well as experiments related to density and other physical properties of liquids.
2.) Tubes feature well-rounded bottoms and smooth fire-polished rims.
3.) Our Glass Test Tubes are cost-effective solution for diverse chemical applications.
4.)Production according to ISO standards or as per your specifications.
5.) Standard packaging is shrink wrapped firstly, then put into strong corrugated carton.
Color:
clear, blue, amber, white, puple, pink
deep processing:
1)decal
2)hole
3)sandblast outside/inside
4) fire polished ends
Some technicial parameters :
Physical Property | |||
No. | Physical performance | Numerical Value | Unit |
1 | Coefficient of mean linear thermal expansion(20°C,300°C) | 3.3±0.1 | 10-6K-1 |
2 | Transformation temperature | 525±15 | °C |
3 | Softening point | 820±10 | °C |
4 | Working point | 1260±20 | °C |
5 | Density at 20°C | 2.23±0.02 | g/cm3 |
6 | Mean thermal conductivity(20°C-100°C) | 1.2 | w/m2k |
7 | Refractive index | 0.92 | 1 |
Main Composition | |||
SiO2 | B2O3 | Na2O+K2O | Al2O3 |
81 | 13 | 4 | 2 |
Chemical Property | |
Hydrolytic resistance at 98°C | ISO719-HGB 1 |
Hydrolytic resistance at 121°C | ISO720-HGA 1 |
Acid resistance Class | ISO1776-First Class |
Main typical application :
a.)labware,
b.)lighting,
c.)diray machine
d.) craftware
e.) solar collect
About the pictures show:
Polyethylene foam and wooden case and wooden pallet or pack as customer's requirement .
You can contact our trade manager at any time. Your problems can be responsed in 12 hours can we will give you solutions in 24 hours. Also if there’s amy problem about our products’ quality, we accept resending them again. Thank you.
*STA Universe Group is bigger manufacturer, of which STA is a brand, is part of the STA Universe Group, a large, high-technology engineering group. It include many factories in China, such as Henan, Zhejiang, Shandong, many provinces.
*STA Heating Elements Factory of STA Group, of which STA is a brand, is a world-leading developer and manufacturer of products based on advanced heating elements.
*Our products and services contribute to our customers' productivity, reliability and cost efficiency while reducing their environmental impact in a wide variety of industry segments.
* In partnership with customers, we jointly develop products and materials that meet the challenges of the future.
*The Heating Elements Factory of STA Universe Group is a manufacturer of silicon carbide heating elements, trade name STA SiC and molybdenum disilicide heating elements, trade name STA MoSi2.
*The STA heating element has a maximum use temperature of 1700 C. The MoSi2 element can operate up to an element temperature of 1800 C, and new 1900 C.
Why STA:
1. We are a manufacturer, which can control the cost easiler than trade company also can give you anwer more quickly.
2. As a manufacturer, we know much in technique and can give you more support in technique problem.
3.Our products are complete in specifications with various of sizes.
4.We enjoy a good reputation in the customers in domestic and overseas markets.
Our factory can according to your need to customize different type required.
If you have any questions or new need of them, pls contact me at any time. The more information will be sent to you, thanks in advance.
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