Beijing Kaixingda Industry Technology Development Co., Ltd.
Main products:Drilling Rig,Water Well Drilling Rig,DTH Hammer,Glass Tube,Molybdenum Wire
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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

new good lab Pyrex glass tubes (borosilicate) 3.3

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

new good Lab Pyrex glass tubes (borosilicate)  3.3 

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

new good lab Pyrex glass tubes (borosilicate) 3.3

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