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  • Contact Person : Mr. jia jeff
  • Company Name : Beijing Kaixingda Industry Technology Development Co., Ltd.
  • Tel : 86-10-67562712
  • Fax : 86-10-67562693
  • Address : Beijing,beijing,NO.15 MAJIAPU,FENGTAI DISTRICT
  • Country/Region : China
  • Zip : 100068

lab Pyrex glass tubes (borosilicate) 3.3 for sale

lab Pyrex glass tubes (borosilicate) 3.3 for sale
Product Detailed
lab Pyrex glass tubes (borosilicate) 3.3 for sale 1. 15 years experience 2.large in stock 3. short delivery time

  lab Pyrex glass tubes (borosilicate) 3.3 for sale 

We provide a full range of borosilicate glass tube with good quality and reasonable price.

OD: 3mm-320mm 

Main composition:

1) SiO2: 80±0.5%

2) B2O3: 13±0.2%

3) Al2O3: 2.4±0.2%

4) Na2O(+K2O): 4.3±0.2%

                     

Chemical properties:

1) Coefficient of mean linear thermal expansion (20°C/300°C) 3.3±0.1 (10-6K-1)

2) Softening point   820±10°C

3) Density at 20°C   2.23g/cm2

4) Maximum working temperature    short term(<10h)   500°C    long term(>10h)  450°C

5) water resistance   ISO719/DIN12111         HGB1 ISO720                  HGA1]

6) Acid resistance    ISO1776/DIN12116        1 7) Alkali               ISO695/DIN52322         A2

8) Thermal conductivity cal/cm·s°C   0.0028

9) Resistivity lgρ(25°C)   15

10) Thermal shockv resistance ΔT°C  230

11) specific heat capacity(0-100°C)0.195cal/g

lab Pyrex glass tubes (borosilicate) 3.3 for sale

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