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Regular specification: (O.D×W.T)
25mm×4mm ,32mm×3.2mm,32mm×4mm,38mm×3.2mm,38mm×4mm,44mm×4mm,51mm×4mm,51mm×4.8mm;
length: 1220mm
Colors available: red, opaque black, opaque white, pink,purple, green,yellow, amber,dark blue, light blue,transparent black
Besides,we can customize unconventional specifications according to your demands: O.D from 3.5mm~300mm,W.T from 0.8mm~12mm,length 3000mm
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 |
Application:
Lamp, labware,artware,smoking pipe,glass straw,sight glass, medical etc



Own factory and warehouse with advanced imported equipment, most valuable professional talents and strict quality control system,16 years experience. With such resources, we promise to satisfy customer's request with our best capabilities.Qingdao vatti glass co.,ltd is a professional glass manufacturer and international market supplier, dealing with Tempered Glass, Laminated Glass, Insulating Glass, Borosilicate Glass, Ceramic Heat-resistant Glass,Aluminosilicate Glass,Anti-glare Glass, Anti-reflective glass,Glass Tube, Sight Glass, Solar PV Glass,Quartz glass, furniture glass Series,Art Glass Series, Mirror Series,Clear float Glass,Reflective Glass,Tinted Glass and so on.
What are the advantages of Borosilicate glass Tube?
1. Low COE 3.3 and lead free
2. High transparency
3. high temperature resistance
4. Hydrolytic/Acid/alkali resistance
Why choose Qingdao Vatti Glass?
1. 16 years experiences on glass manufacturing and exporting.
2. Top quality glass with CE,CCC certificate, exporting to more 80 countries in the world.
3. Unique designed strong wooden cases, solving the problems of breakage.
4. Dockside warehouses beside three of China main container seaports, ensuring convenient loading and rapid delivery.
5. Full range of flat glass supply, offering one-stop purchase.
6. Professional sales team, offering personalized and dedicated services.
New products from manufacturers at wholesale prices