Borosilicate glass tube 3.3 Color: clear Borosilicate COE3.3 glass tubing: 1. Diameter available: 3.5mm~300mm 2. Wall thickness: 0.8mm~12mm 3. Length: 1220mm~3000mm 4. Regular sizes: 9*2, 12*2, 25*4, 28*4, 32*3.2, 32*4, 38*4, 44*4, 51*4, 50*5. 5. The high borosilicate 3.3 glass tube is used forlab equipment, optical, medical, daily glassware, solar energy, test tube, etc. 6. We can supply special dimensions according to request. Chemical Composition SiO2: 81% B2O3: 13% Na2O+K2O: 4% Al2O3: 2%
Chemical Composition SiO2: 81% B2O3: 13% Na2O+K2O: 4% Al2O3: 2%
Specification
Physical Performance
Numerical Value
Unit
Coefficient of Mean Linear Thermal Expansion(ISO 7991)
3.3±0.1
10 -6 K -1
Transformation Temperature
525±15
°C
Softening Point (ISO 7884-6)
820±10
°C
Working Point (ISO 7884-2, ISO 7884-5)
1260±20
°C
Upper Cooling Temperature (ISO 7884-7)
560
°C
Lower Cooling Temperature (ISO 7884-7)
510
°C
Density at 20°C
2.23±0.02
g/cm 3
Thermal Conductivity (20°C--100°C)
1.2
w/m 2 K
Specific heat capacity at constant pressure
0.8× 10 3
J×/Kg@K
Modulus of elasticity
64 × 10 3
MPa
Tensile strength
35-100
MPa
Poisson constant
0.2
Refractive Index
0.92
Packing & Delivery
Company Profile
Qingdao Hongya Glass Co.Ltd is major in a professional and comprehensive company and is one of the leading manufactures and exporters in China with extensive experience.
Our products is the fire/high temprature resistance glass,glass ceramics, Borosilicate glass,quartz glass...Our product products has widely used in fireplace/stove,cooking utensils, building industry, papermaking industry and so on.
Though remarkable achievement has been accomplished,our company will always stick to our principles: product of high quality is the life of our company,and benign cooperation relationship with our business partners is impetus to continuous development of our company.
