Borosilicate glass tube 3.3 Borosilicate glass has a very low thermal expansion coefficient, about one-third that of ordinary glass. This reduces material stresses caused by temperature gradients, thus making it more resistant to breaking. This makes it a popular material for objects like telescope mirrors, where it is essential to have very little deviation in shape.
Borosilicate COE3.3 glass tubing: 1. Diameter available: 3.5mm~300mm 2. Wall thickness: 0.8mm~12mm 3. Length: 1220mm~3000mm 4. Regular sizes: 9*2, 12*2, 25*4, 28*4, 32*3.2, 32*4, 38*4, 44*4, 51*4, 50*5. 5. The high borosilicate 3.3 glass tube is used forlab equipment, optical, medical, daily glassware, solar energy, test tube, etc. 6. We can supply special dimensions according to request.
Chemical Composition SiO2: 81% B2O3: 13% Na2O+K2O: 4% Al2O3: 2%
Use of high borosilicate glass
High borosilicate glass rod: it can be used for processing high-grade decorative lamps and lanterns, which is favored by domestic and overseas
High borosilicate glass tube: it can be used for chemical instrument tube, chemical pipe and handicraft pipe
Specification
Expansion coefficient/dilatation coefficient
（32.5±0.5）×10-7/℃
Density（g/cm3）
2.23±0.02
Water resistance
Level 1
Acid level
Level 1
Alkali resistance level
Level 2
Softening point
820℃
Analysis product temperature
695℃-1180℃
Melting temperature
1680℃
Mold temperature
1260℃
Softening temperature
830℃
Annealing temperature
560℃
hardness
seven
Details Images
Packing & Delivery
Packaging: Can be customized according to the needs of packaging
Company Profile
Our company specializes in the production of high borosilicate glass tube, high borosilicate glass products and other products, welcome new and old customers to purchase.
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The mode of transportation
FAQ
Q1: Are you factory or trading company? A: We are manufacturer in Hebei Province near Beijing. Q2: Where is your factory and trading officelocated ? How can I visit there? A: Our factory is located in Hejian County, Hebei Province, about 2 hoursdriving from Beijing Capital International Airport. Q3: Can support OEM&ODM order? A: Yes,we have rich experience in OEM&ODM production, can meetyour personalized needs. Q4: Can you do the designs for us? A: Yes.We have a professional team having much experience in designingand manufacturing.Just let us know your ideas,we will draw the finished filesfor your confirmation. Q5: What format of the file do you need if I want myown design? A: You can provide JPG,Al,or PDF etc,Our professional designer will drawartwork for mould or printing screen for you. Q6: How does your factory do regarding quality control? A: Quality first is our motto, and we have professional QC department.Every TIANYUAN People is concerned about the quality of the products. Q7: How can I get some samples? A: Sure,we usually provide existing samples for free.But a little sample charge for custom designs,Sample charge is refundable when order is up to certain quantity. Q8: Shipping terms? A:We can do FOB,CIF,CFR and DDU, DDP.
