This is the most commonly used material due to its low cost. It can be easily toughened to effectively increase the mechanical strength of annealed glass by up to five times. 
We have plant and equipment, including our water-jet cutting machine and CNC machining center.Quartz glass according to customer's requirements, made from JGS1, JGS2, JGS3, on production.
                           
                                    Other Specification : 
Dear My Friend,
 
Nice To Meet You. This Is Rose From Hengshui Aohong Technology Co.,Ltd.
We Are a Professional Factory Of Gauge Glass & Sight Glass. Our Products Have Been Exported To Many Countries.
The Products  are As Follows:
1. Reflex Gauge  Glass ( 3 Lines 4 Grooves ) & Transparent Gauge Glass 
  340 X 34(30) X 17mm     320 X 34(30) X 17mm       280 X 34(30) X 17mm     250 X 34(30) X 17mm     
  220 X 34(30) X 17mm     190 x 34(30) X 17mm       165 x 34(30) x 17mm     140 x 34(30) x 17mm     
  115 x 34(30) x 17mm     420 X 34 X 17mm              370 X 34 X 17mm            300 X 34 X 17mm  
   And Some Other Special Size Gauge Glass Can Be Customized According To Your Drawings.
2. Sight Glass: Round,  Rectangular & Square ,  Tubular Sight Glass
 
3. Glass Road Stud,reflective Glass Road Studs, reflective Road Studs.
 
4. Material: Tempered  Soda Lime Glass,  Tempered Borosilicate Glass, Tempered Borosilicate 3.3,  Quartz.
5.  Packing:  Paper Box, Carton , Plywood Case. Or According To Requirement.
                                                      
6.  Gasket:  Asbestos Rubber Gaskets ,non-asbestos Rubber Gaskets, graphite Gasket,PTFE Gasket,micashield .
 
7.  Printing: We Can Print On The Glass  according To  Requirements.
 
Any Question, Please Feel Free To Tell Me. I Will Do My Best!
 
 
Thanks&Best Regards,  
   
Rose Li  
Aohong Group Limited
Hengshui Aohong Technology Co.,Ltd
 
Hengshui Aohong Special Glass Manufacturing Co.,Ltd
 
Skype: Roselover52198 Wechat/whatsapp +8613473808273