Product Details

Best price borosilicate 3.3 4 inch diameter glass tube

Product Description

Specification:

Borosilicate glass tube as PYREX glass tube widely used in in solar energy, chemical, pharmaceutical packaging, electric light source, craft jewelry industry scientific laboratory glassware etc.

OD:6MM-320MM WT: 0.8MM-10MM

Color:clear, amber, blue ,pink,green etc

Physical data

No.	Physics performance	Numerical Value	Unit
1	coefficient of mean linear thermal expansion(20ºC;300 ºC)	3.3±0.1	10-6 K-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±0.2	g/cm2
6	Mean thermal conductivity(20ºC-100ºC)	1.2	W/m.K
7	Refractive Index	0.92	l

Chemical Composition

Item	SiO2	B2O3	AL2O3	Na2O +K2O
%	81	13	2	3.08

Chemical Data:
Hydrolytic resistance at 98ºC          ISO719-HGB 1
Hydrolytic resistance at 121ºC         ISO720-HGB 1
water resistance                       Grade 1              Test method: ISO1776
Acid resistant Class                   Grade 1              Test method: ISO1776

Product Used:

Borosilicate Glass Rods:

Regular Size: 4~42mm;

Regular Length: 1200mm;

Colors Available: Red, Opaque Black, Opaque White, Pink, Purple, Green, Yellow, Light Yellow,Amber, Blue A/B/C/D/E/EE, Transparent Black ,Cognac, Golden Champagne,Jade White e.t.c

Main Composition:

Main Composition
SiO2	B2O3	Al2O3	Na2O+K2O
80±0.5%	13±0.2%	2.4±0.2%	4.3±0.2%

Physical and Chemical Properties:

Coefficient of mean linear thermal expansion (20°C/300°C)

Softening point

Melting point

Transformation temperature

Hydrolytic

resistance

at 98°C

Hydrolytic resistance at 121°C

Acid resistance class

Alkali resistance class

Applications

3.3±0.1 (10-6K-1)

820±10°C

1260±20°C

525±15°C

ISO719-HGB1

ISO720-HGA1

ISO1776-1

ISO695-A2

Superior heat- resisting products and crafts

Production Show

Packaging & Shipping

Packaging
Inner packaging: heat shrink film Outside packaging: 5 layers strong corrugated carton or non-fumigation pallet.
Spec.	Carton sizes (mm)	N.W./CTN (kg)	G.W./CTN (kg)	N.W./20GP (kg)
10.75×0.50×1500	230×230×1530	22.5	24.0	7650
12.75×0.50×1500	230×230×1530	19.2	20.7	6528
14.75×0.55×1500	230×230×1530	17.7	19.2	6018
17.75×0.60×1500	230×230×1530	15.7	17.2	5338
22.50×0.70×1500	230×230×1530	14.3	15.8	4862
16.00×1.0×1500	230×230×1530	29.3	30.8	9962
22.00×1.0×1500	230×230×1530	21.9	23.4	7446
24.00×1.0×1500	230×230×1530	19.2	20.7	6528
30.00×1.2×1500	230×230×1530	19.6	21.1	6664