怀来天元特种玻璃有限公司LOGO 简体中文 | EngLish
 
 


1.Description

   Our color tubing in dark blue and light blue are popular in Ameican market.

2.Popular size(OD*W (mm))
   For heavy wall

   19*3.0 , 25*4.0 , 28*4.0 ,  45*5.0, 
   50*7.0,  
51*8.5,  51*4.0,  51*8.5, 
   60*7.0,  
65*5.0,  65*5.0,   75*5.0, 
   25*4.0,  32*4.0,   44*4.0,  

   For light wall
   19*2.0,  30*2.0, 57*2.1,  60*2.5,
   60*2.2,  
70*2.0, 80*1.5,  80*2.0,
   85*2.0


3.Main Composition

   a) SiO2: 80±0.5%

   b) B2O3:13±0.2%

   c) Al2O3:2.4±0.2%

   d) Na2O(+K2O):4.3±0.2%

4.Physical and Chemical Properties

  a) Coefficient of mean linear thermal expansion(20/300℃):3.3±0.1(10-6K-1)

  b) Transformation temperature: 525±15℃

  c) Melting point::1,260±20℃

  d) Softening point:820±10℃

  e) Density at 20℃:2.23g/cm2

  f) Hydrolytic resistance at 98℃: ISO719-HGB1

  g) Hydrolytic resistance at 121℃: ISO720-HGA1

  h) Acid resistance class:ISO1776-1

  i) Alkali resistance class:ISO695-A2

 
 
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