Borosilicate 3.3 Heat-resistant Glass(Optical lens)

Qinhuangdao Scinan Special Glass Co., Ltd.
Ref Price:
Loading Port:
Payment Terms:
Min Order Qty:
1000 pc
Supply Capability:
10000000 pc/month
Inquire Now Customer Service

Contact us by

(1) WeChat
(2) Whatsapp: +8618101089932

OKorder Service Pledge

Quality Product

Order On-line Tracking

Timely Delivery

OKorder Service Pledge

Credit Rating

Credit Services

Credit Purchasing

Share to:

Item specifice:

Inorganic silicate: High borosilicate glass

Product Description:

Product introduction:

Borosilicate glass 3.3 is a type of glass that has become increasingly popular in recent years, due to its excellent thermal and chemical resistance properties. It is composed mainly of silica, boric oxide, aluminum oxide, sodium oxide, and other oxides. This specific combination makes it ideal for use in optical lenses as well as various types of laboratory equipment. Borosilicate 3.3 glass can be used as optical lens for cameras and other equipment.At the same time, its wear resistance is also very prominent.

Borosilicate Glass Optical Lenses are used for a variety of applications such as microscopy and telescopes. The combination of the borosilicate glass material with the precision-made optics allows for superior performance when compared to standard plastic or acrylic lenses. Additionally, Borosilicate Glass Optical Lenses provide increased clarity and color fidelity which helps reduce eye fatigue during extended viewing sessions. 

The composition of Borosilicate Glass 3.3 makes it particularly suitable for high temperature use without compromising on strength or durability; this property can be beneficial when creating optical lenses which require higher temperatures during production processes than what traditional glasses can handle without cracking or melting under pressure. 

Technical Data

Thickness Range:2mm-20mm

Color: ultra-clear, transmittance 92%

Thermal properties

Coefficient of Linear Thermal Expansion (C.T.E) α (20°C~300°C): 3.3×10-6 K-1

Specific heat capacity cƤ (20-100°C) :0.83kJ/(kg·K)

Thermal conductivity λ (90°C):1.2 W/(M·K)

Heat shock temperature:240°C

Annealing Point:560°C

Strain Point: 510°C

Optical data

Optical index of refraction:1.48

Mechanical properties

Density ρ (25°C) :2.23ɡ/cm3

Young's Modulus E (according to DIN 13316):64 kN/mm2

Poisson's Ratio μ (according to DIN 13316):0.2


High borosilicate 3.3 glass is high-temperature resistant glass, heat-resistant glass and temperature difference resistant glass. The linear expansion coefficient is 3.3 ± 0.1 × 10-6 / K, is a glass with sodium oxide (Na2O), boron oxide (b2o2) and silicon dioxide (SiO2) as the basic components. The content of boron and silicon in the glass composition is relatively high, namely, boron: 12.5 ~ 13.5%, silicon: 78 ~ 80%.

The expansion coefficient will affect the stability of glass. The expansion coefficient of borosilicate 3.3 heat-resistant glass is 0.4 times that of ordinary glass. Therefore, at high temperature, borosilicate 3.3 heat-resistant glass still maintains excellent stability and will not crack or break.


Borosilicate Glass 3:3 offers many advantages regarding its usage when making complex optical lenses such as microscopes or telescope components; not only does it have excellent properties against heat distortion but also provides exceptional clarity & colour fidelity necessary when viewing objects at either microscopic level or great distances away respectively - offering users much better visual experiences than many other materials out there today regardless if they’re using them recreationally through hobbyist activities like astronomy/birdwatching etc., professionally through medical research etc.


Pre-cut formats, edge processing, tempering,drilling, coating, etc

 Our company has passed the SGS certification 、SISO9001:2015 certification, and we have also passed the Certificate China National Compulsory Product Certification.Our company has obtained more than 20 national patents,and fireproof glass test report.


Company Introduction

                                                                  China Yaohua Glass Group Co., Ltd.

founded in 1922, china yaohua glass group co., ltd. (hereinafter referred to as "yaohua group”) is a second-tier subsidiary of triumph science&technology co. ,ltd. it is the first manufacturer in asia to continuously produce flat glass by machine,and is known as “the cradle of chinese glass industry”.

yaohua group, as the core platform of triumph science & technology group for high-quality float and special glass, now has 14independent legal entity enterprises, with assets of over 10-billion-yuan, annual revenue of more than 5 billion yuan and total annual profit of more than 1 billion yuan. the group covers 10 prefecture-level cities in six provinces including heilongjiang, hebei, shandong., henan, anhui and sichuan, with 4000 employees. 

it has three sectors float glass, special glass and deep-processing glass. the special glass unties composed of engyang triumph silicon materials co., ltd. qinhuangdao scinan specialty glass co., ltd.triumph bnegbu glass co., ltd. and cnbm(puyang) photoelectric materials co., ltd.

                                                          Qinhuangdao Scinan Specialty Glass Co., Ltd.

Company Introduction

Founded in 2009 with 65.47 million registered capital and 162 employees, Qinhuangdao Scinan Specialty Glass Co.,Ltd. formerly known as “Qinhuangdao Yaohua Special Glass Co., Ltd.”. The company’s leading products borosilicate flat glass, the annual production capacity of 16425 tons, the products to 3.3 borosilicate flat glass based.


Qinhuangdao Scinan Specialty Glass Co.,Ltd. has researched and developed borosilicate glass products for about 20 years, and has a technical team with excellent professional knowledge and rich experience.


Located in Funing District, Qinhuangdao, the new park is expected to have an annual production capacity of 17,520 tons. It plans to produce 2.6 borosilicate and 3.3 borosilicate glass for household appliances and 4.0 borosilicate fire-resistant glass. The project is expected to be completed by the end of 23 years.




Our service

We provide high-quality services throughout the process:

Before sales, we provide professional product introduction

In sales, we provide high-quality products

After sales, we have a perfect after-sales system

Our advantage

It is the first high-tech enterprise in China to produce borosilicate flat glass products by full electrofusion technology. At present, the domestic market share industry ranks first. The core technology of the production line is self-developed, the key equipment is the most advanced industrial products, the company set borosilicate flat glass production, processing, sales and service as one, sales network has been spread throughout the country and many countries and regions of the world.

Send a message to us:

Remaining: 4000 characters

- Self introduction

- Required specifications

- Inquire about price/MOQ

Q:China's largest glass deep processing enterprises which
Taiwan Glass Group in 1964 by the Taiwanese industrialist Mr. Lin Yujia founded in Taiwan, specializing in glass industry, 50 years has developed into China's largest integrated glass company, the world's second largest glass fiber cloth company. 2008 Taiwan glass to achieve sales of 1.05 billion US dollars, ranked sixth in the world. May 2009, "Business Week" "cross-strait thousands of enterprises ranked", the Taiwan glass is the only one into the top 500 glass enterprises!
Q:What brand of hot-melt glass is better?
Qinhuangdao Yaohua Jun Ding Art Glass is the best, you can go to the local inspection, you can join. Old brand, for decades, I heard that done a lot of large projects, but also to do the export.
Q:What is this wall of glass building material called?
Glass curtain wall, coated glass or low-E
Q:Glass bottom margin of the final decoration surface is less than 500 hollow glass how to install?
Your insulating glass can not be regarded as a safe insulating glass, and if the building needs to comply with the "Building Safety Glass Management Regulations", such glass can not be used. If there is no strict requirements, from the perspective of building safety, only the safety glass (ie, tempered glass) one toward the outside, to prevent the outer film damage caused by serious harm to outsiders.
Q:I want to project a company's logo with a gobo onto a glass building. Projection distance is about 150'-200'. Projectors are also an option for me as we have those and access to large ones as well.
How clean is the glass in the building? And what color? You may not be able to produce anything that can be reliably seen in that clean glass will reflect the light up and away and not back to viewers at ground level and many buildings have gray or black glass that is intended to block heat from getting inside and will absorb the light from the spot light. The obvious direct answer is that you buy/rent a large theatrical ellipsoidal spot and mount it in a protective hut and mount the gobo on the nose - but you probably knew that if you knew the term gobo.
Q:Introduction to Building Membrane Materials
Building film is the use of PET (polyethylene) substrate, leading the use of multi-layer metal sputtering technology and vacuum technology and ion technology and thin film physics, fine chemical technology, it has a very high heat insulation efficiency, high tension, Strong acid and alkali resistance. And the color is rich natural, the test results show that: can block 81% of the solar energy; in the outdoor temperature of 38 ℃ ~ 39 ℃, lower than the average glass temperature of 3.5 ℃, saving more than 30% of the air conditioning power consumption, Energy - saving safety materials.
Q:Find the role of several new glass features, to concentrate a little Hurry Short point, a little concentration, tomorrow to use acridine!
Flat glass is not processed by other flat glass products, also known as white glass or clean glass. According to the production method is different, can be divided into ordinary flat glass and float glass. Flat glass is the largest in the building glass, the most used one, mainly for doors and windows, from lighting (visible light transmission than 85% 90%), enclosure, insulation, sound insulation and other effects, but also further processed into other technical glass The original film.
Q:Which brand of glass ink is good?
680 ℃ ~ 720 ℃ glass pigment Product Description ? HC-0 series of lead-free cadmium-free glass pigments, this product has been tested by SGS Mainly used for architectural glass, furniture glass, electrical glass, bathroom glass. This series of pigments have 38 varieties: of which 26 kinds of opaque pigments, 11 kinds of metallic luster pigment, a kind of black (special) powder. Pigments can be mixed with each other to get a composite color, in addition, can provide lead-free cadmium red and yellow. Red flag, glass, ink, paint, hungchi
Q:To a friend to say that under the sound of the glass how to choose it?
Hollow glass: hollow glass in the high frequency noise (such as people speak the sound, the school tweeter horn sound, etc.) have good sound insulation effect, but the traffic low frequency noise (such as bus engine noise, train noise, aircraft noise, etc.) effect is not obvious The
Q:Building glass curtain wall to do the information about how much money
With the size of the curtain wall area of the amount of work, everyone talk about the price, no uniform price, reasonable on the line. Small items do not package materials inspection fees, also three thousand five thousand dollars, large projects million blocks, tens of thousands of pieces are normal. If the duration is too long, the cost has to increase.

1. Manufacturer Overview

Year Established
Annual Output Value
Main Markets
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port
Export Percentage
No.of Employees in Trade Department
Language Spoken:
b)Factory Information  
Factory Size:
No. of Production Lines
Contract Manufacturing
Product Price Range
Hot Searches
live chat