1200℃ High Temperature Resistant Large Diameter Quartz Glass Tube with Good Electrical Insulation for Vacuum Tube Furnace

We are a manufacturer of Transparent Quartz Tube Furnace. We accept custom orders according to different diameter, thickness, length, or by providing your drawing.

• High purity: SiO₂ > 99.99%
• Operating Temperature: 1200℃; Soften Temperature: 1730℃
• Good thermal stability
• Acid and alkali resistance
• High transmittance
• Excellent electrical insulator

Quartz glass is an acidic material. Except for hydrofluoric acid and hot phosphoric acid, it is inert to any other acid and is a very good acid-resistant material. It has better chemical stability than opaque quartz glass, is non-hygroscopic and non-weathering.

Quartz glass has high dielectric strength and low conductivity. Even at high temperature, high pressure and high frequency, it maintains high dielectric strength and resistance, with almost no dielectric loss in the applied frequency band, making it an excellent high temperature dielectric insulation material.

Quartz glass has unique optical properties. It can transmit both the far-ultraviolet spectrum (making it an excellent choice for all UV-transmitting materials) and visible light with near-infrared spectrum. It features high temperature resistance, small coefficient of thermal expansion, good chemical thermal stability, with minimal bubbles, streaks, uniformity, and birefringence comparable to general optical glass.

The coefficient of thermal expansion of quartz glass is small, only one-twelfth to one-twentieth of ordinary glass. Standard testing involves burning the specimen to 1200 degrees Celsius and then casting it sharply into cold water repeatedly more than three times without cracking.

Quartz glass mechanical properties are better than conventional glass and ceramics, but it has poor brittleness. The theoretical calculated strength of quartz glass is very high (about 24 * 1.3 MPA), but the actual measured strength is tens of times lower than this value.

The structure of quartz is very relaxed, allowing ions of certain gases to diffuse through the network even at high temperatures, with sodium ions diffusing particularly fast. This property is particularly important for users.

Lianyungang Shengfan Quartz Product Factory is a professional manufacturer specialized in research and development of quartz plate, quartz tube, quartz flange, quartz ring, cuvette and quartz instruments. The company is located in China Crystal Capital - Donghai City, Jiangsu Province, China, 70 km from Lianyungang port with convenient transportation.

Covering an area of 1000 square meters, we now have over 30 employees with annual sales exceeding USD 5.2 million.

With the philosophy of Technology Orientation, Quality First, Integrity and Responsibility, Sustainable Operation, the company dedicates to establish an international enterprise with standard and sustainable operation capability.

The company adheres to integrity in business, with extensive experience, reasonable pricing, quality assurance, and excellent after-sales service. We sincerely welcome customers to come to negotiate.

A: Yes, we welcome sample orders to test and check quality.

A: Within 15 days after receiving deposit.

A: Low MOQ, 1pc for sample checking is available.

A:
1. Let us know your requirements or application.
2. We quote according to your requirements or our suggestions.
3. Customer confirms the samples and places deposit for formal order.
4. We arrange the production.

A: DHL, UPS, FedEx or TNT are optional for small orders. It usually takes 3-5 days to arrive. Airline and sea shipping are also available.