Factory Supply Heat Resistance Customized Size Borosilicate Sight Glass Tube

Factory Supply Heat Resistance Customized Size Borosilicate Sight Glass Tube — a sight / viewing glass. Specs, RFQ checklist and custom sizes to drawing.

Glass TubeType

Daily UseApplication

TransparentColor

18-1.8-1500Model NO.

Product type: Glass Tube. Application: Daily Use. Model: 18-1.8-1500.

Overview

The Factory Supply Heat Resistance Customized Size Borosilicate Sight Glass Tube is supplied as a sight / viewing glass. It is used in Daily Use. Dimensions, material grade, coating and finish can be quoted to your drawing; the values above are the listed starting point.

Specifications

Type	Glass Tube
Application	Daily Use
Color	Transparent
Model NO.	18-1.8-1500
Supplier	Shandong Longguang Tianxu Solar Energy Co., Ltd.

Technical data

No.	Physical Performance	Numerical Value	Unit
1	Coefficient of meamlinear thermal expansion (20ºC-300ºC)	3.3+/-0.1	10-6K-1
2	Transformation temperature	525+/-15	ºC
3	Softening point	820+/-10	ºC
4	Working Point	1260+/-20	ºC
5	Density at 20ºC	2.23+/-0.02	g/cm3
6	Mean thermal conductivity(200-100ºC)	1.2	w/m2k
7	Refractive index	0.92	1

SiO2	B2O3	Na2O+K2O	Ai2O3
81	13	4	2

Hydrolytic Resistance at 98ºC	ISO719-HGB 1
Hydrolytic Resistance at 121ºC	ISO720-HGA 1
Acid Resistance Class	ISO1776-first class

What to specify when you request a quote

Glass type and thickness — name the glass and thickness.
Temperature and pressure — give working temperature, thermal shock and any pressure rating.
Strengthening and safety — state tempering, lamination or the safety standard.
Outline and edges — send a drawing with outline, holes and edge finish.

Engineering guides for this part

For material grades and coating options, see Borofloat 33 Glass: Material Selection for Precision Substrates. How parts like this are machined and finished is covered in Precision Bore Glass Tubing Processing: End-to-End Manufacturing for Industrial Buyers. For an application example, read Quartz Glass Windows for High-Temperature Appliance Modules. Before sending a drawing, check Thermal Conductivity of Quartz Glass & Fused Quartz: A Process Guide. A related standard product is AR Anti-Reflection Optical Window.

FAQ

Where is this sight / viewing glass used? expand_more

Listed applications: Daily Use.

What should I include in a quote request? expand_more

Include glass type and thickness, temperature and pressure, strengthening and safety and outline and edges, plus quantity and a drawing if the part is custom.