High Borosilicate 3.3 Glass Discs used in High Temperature View Window

Contents:

SiO2%: 80.10
B2O3%: 12.16
Al2O3%: 2.53
K2O%: 0.10
Na2O%: 4.50
Chemical Resistance
Borosilicate glass 3.3 is resistant to chemical attack by almost any product, which makes its resistance much more comprehensive than that of other well-known materials. It is highly resistant to deionized water, saline solutions, organic substances, halogens such as chlorine and bromine and most acids. There are only a few chemicals which can cause noticeable corrosion of the glass surface namely hydrofluoric acid, concentrated phosphoric acid and strong caustic solutions at elevated temperatures. However, at ambient temperatures caustic solutions up to 30% concentration can be handled by borosilicate glass without difficulty.
Borosilicate glass 3.3 can be classified in accordance with the relevant test methods as follows (see also ISO 3585 and EN 1595):
Hydrolytic resistance at 98 ºC Hydrolytic resist. grain class ISO 719-HGB 1
Hydrolytic resistance at 121º Hydrolytic resist. grain class ISO 720-HGA 1
Acid resistance Deposit of Na2O < 100 mg/dm² to ISO 1776
Alkali resistance Alkali resistance class ISO 695-A2
PHYSICAL PROPERTIES
Borosilicate glass 3.3 differs from other materials of construction used for process plant not only because of its virtually universal resistance to corrosion (see above) but also because of its very low thermal expansion coefficient. There is, therefore, no need for expensive measures to compensate for thermal expansion resulting from changes in temperature. This becomes of particular significance in the layout of long runs of glass pipeline.

Yantai ZK Optics Co., Ltd., is founded in year 1998, it is a high-tech comprehensive glass processing enterprise integrating R&D, production and sales.

The product sales have been spread all over the world, and are trusted by users in Asia, Europe, the United states, South Korea and India. It has established a high-quality product image and brand in the field of glass deep processing.

The company specializes in the custom processing of various optical glasses, including glass capillary tubes / rods, shaped glass tubes / rods, laser cavity filters, optical fiber quartz end caps, quartz parts, quartz plates and quartz instrument etc.

Products are widely used in semiconductor, communications, solar energy, electronics, optics, optical fiber, aerospace, military, chemical industry, coating, medical treatment and many other high-end industries.

The company is located in Beijing, the capital of China, and it has a large production base-Laiyang Zhong Cheng Quartz Glass Co., Ltd. In Laiyang, Shandong province which covers an area of 20,000 square meters. In year 2020, in order to expand the scale of production, the factory was expanded by 8,000 square meters, and it is expected to be put into use in year 2021.

The company takes product quality as its tenet. Each product is strictly controlled from material selection, processing, inspection, packaging, transportation to after-sales service. With technological innovation as the driving force, a large-scale and systematic production model has been formed.

Adhering to the service concept of the quality first and customer-oriented, through unremitting efforts and continuous improvement, ZCQ has created a good manufacturing platform of optical glass for customers.