4mm-300mm Borosilicate Glass Tube Laboratory Glassware Culture Tubes

Place of Origin China
Brand Name ZCQ
Certification SGS
Model Number ZCQ
Minimum Order Quantity 10pcs
Price USD 1-100/PC
Packaging Details Bubble pad, sponge, carton, wooden box
Delivery Time 5-10work day
Payment Terms L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability 10000pcs/day

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Product Details
Product Name Borosilicate Laboratory Lab Glass Test Tube Culture Tubes Material Borosilicate COE3.3 Glass
Size Diameter: 4mm-300mm Silicon Content >=80%
Strain Temperature 520℃ Annealing Temperature 560℃
Softening Temperature 820℃ Processing Temperature (104dpas) 1220 ℃
)Linear Expansion Coefficient (20-300 ℃) 3.3*10-6K-1 MOQ 10
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4mm Borosilicate Glass Tube


Laboratory Glassware Borosilicate Glass Tube


Borosilicate Glass Culture Tubes

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Product Description

High Borosilicate Glass Tube For Laboratory Glassware Lab Glassware


Borosilicate glass is a type of glass with silica and boron trioxide as the main glass-forming constituents. Borosilicate glasses are known for having very low coefficients of thermal expansion (≈3 × 10⁻⁶ K⁻¹ at 20 °C), making them more resistant to thermal shock than any other common glass. Such glass is subjected to less thermal stress and can withstand temperature differentials without fracturing of about 165 °C (297 °F). It is commonly used for the construction of reagent bottles and flasks as well as lighting, electronics and cookware.


Borosilicate glass
Silicon Content >80%
Coefficient of Thermal Expansion (20-300℃) 3.3×10-6 /K
Density(20℃) 2.23g/cm3
Hot Work Temperature(104dpas) 1220℃
Annealing temperature 560℃
Softening temperature 820℃
Refractive Index 1.47
Thermal Conductivity 1.2Wm-1 K -1


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Rich experience in quartz glass industry
We have more than 25 years industry experience in quartz glass processing. We specialize in quartz glass capillary tubes and rods, quartz glass substrates, CNC machined quartz, and quartz instruments etc. According to product application, we have good grasp of material properties and adapt the proper material into product application.

Strong technical force in processing and application
Beijing Zhong Cheng Quartz Glass Co., Ltd(ZCQ) is a high-tech manufacturer specializing in the production and customization of quartz glass products and optical glass products. We has excellent technical strength, strong innovation ability and stable product quality. Our processing method is rich, drawing of glass, cold and thermal processing, micro size machining, high precision and difficulty process, combination of multiple processing methods, which guarantee that our product is excellent in all aspects.

Integrity and Quality Assurance
We are well known in quartz glass industry. Quality is the lifeline of enterprise survival and development. Integrity is the source of enterprise reputation, the foundation of standing and the foundation of development. Through unremitting efforts and continuous improvement, we have created a good manufacturing platform of optical glass for customers.

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