Tel:15560296233

Fax:0373-5939232

QQ:249387260

skype: kelly.lee3335

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Email:ilern@126.com

China clear high borosilicate glass tubes expansion rate 3.3

1. made of pyrex glass
2. can print any color required to the surface of the tube
3. high temp resistant

Xinxiang Xinbo glass quartz products Co., LTD

Product

material:

optical glass

feature :

1)Low COE:3.3
2)High quality,low price
3)Hard,lead free
4)For lights,artcrafts,smokings etc.

OEM serivce:

YES

Specifications:

1. made of pyrex glass
2. can print any color required to the surface of the tube
3. high temp resistant

Price

payment:

L/C,T/T,Western Union

Port:

Lianyungang, Shanghai,qingdao

MOQ:

100PCS

Sample:

available

Contact us

M P:

15960296233

Tel:

86-0373-5939232

Fax:

86-0373-2624722

Add:

No.2,7th building,Xinyun block,Xinxiang City,Henan province

Product Image

Production process

China clear high borosilicate glass tubes expansion rate 3.3

Chemical properties:

Chemical Composition	Physical Properties
SiO2 = 80.6%	Coefficient of expansion (20°C–300°C) 3.3 x 10-6 K-1
B2O3 = 13.0%	Density 2.23g/cm3
Na2O = 4.0%	Refractive index (Sodium D line)1.474
Al2O3 = 2.3%	Dielectric constant (1MHz, 20°C) 4.6
Optical Information	Specific heat (20°C) 750J/kg°C
Refractive index (Sodium D line) =1.474	Thermal conductivity (20°C) 1.14W/m°C
Visible light transmission, 2mm thick glass = 92%	Poisson’s Ratio (25°C – 400°C) 0.2
Visible light transmission, 5mm thick glass= 91%	Young’s Modulus (25°C) 6400 kg/mm2

Usage:

1.Solar collect

2.Chemical industry

3.Electrical light source

4.Labware