Hubei Yang Hua Glass Co., Ltd. was founded in 2005 and is located in Three Gorges Dam of Yichang County Industrial Park, Hubei Province (1km away from the Three Gorges Dam). We are a professional manufacturer of high-borosilicate glass, glass rods and pressure products.

Our company has an annual output of 10,000 tons of glass and high borosilicate glass. Our product has reached domestic advanced level in the same industry according to the market demand. Our existing fixed assets are 15 million Yuan. Our company covers an area of 121405 square meters, including a 5000-square-meter workshop with more than 100 employees.



Borosilicate Glass Tube & Rod
Physics performance:
1.Coefficient of mean linear thermal expsion(20C-300C) 3.2-3.4 10-6K-1
2.Transformation Temperature 510-540C
3.Softening point 810--830
4.Working point 1240-1260C
5.Density at 20 C 2.03-2.43 g/cm2
6.Mean thermal conductivity(20C-100C) 1.2 W/m.K
7.Refractive index 0.92 I

Chemical Composition In Approximate Weight % (Main Components)
Item SiO2 B2O3 Al2O3 K2O Na2O
% 81 12.45 2.49 0.08 3.08

Chemical Data
Hydrolytic resistance at 98 C ISO719-HGB 1
Hydrolytic resistance at 121 C ISO720-HGB 1
Water resistance Class Grade 1 Test mothod:ISO1776
Acid resistance Class Grade 1 Test mothod:ISO1776
Alkali resistance Class Grade 2 Test mothod:ISO1776

Advantage of Product:
1.Without absorption of water ,sparkling and crystal-clear,artistic and practical;
2.Stable capability of acid-resistance, alkali-resistance,and hydrolytic-resistance;
3.High hardness,anti-friction and can be cleaned in dishwasher;
4.Easily cleaned , Uneasily forming dirt,Keep new and clean after long-time use;
5.Do not contain any poisonous substabces to human body;
6.Using in microwave-oven,do not scald hands,absorb few microwave,and save energy;Capabilities:anti-impact,heat-resistance ,uneasily fragile etc.
Physical & Chemical Property
Expansion coefficient:(37-39)*10-7/k
Hydrolytic-resistance:first class
Acid-resistance:first class
Alkali-resistance:second class
Thermal shock: >120C