Factory Transparent black colored borosilicate glass tube

Products features:

Clear and clean,

High homogeneity

High temperature resistant

High light transmission

Anti chemistry attack

Working temperature:

Regular working temperature: 1000°C

Working temperature for short term:1100°C

instant working max temperature:1300°C

Mechanical Property: 

 INSTUCTION

1. Do not operate in temperature beyond quartz maximum working temperature for long time.

    Otherwise, products will deform crystallization or become softening. 

 2. Clean the quartz products before high temperature environment operation . 

   Firstly soak the products in 10% hydrofluoric acid, then wash it with high purity water or alcohol .

   Operator should wear thin gloves , direct touch with the quartz glass by hand is inhibited.

 3. It is wise to extend the lifespan and thermal resistance of quartz products via continuous use 

    within high temperature environment. Otherwise, interval use shall shorten products lifespan.  

 4.  Try to avoid touch with alkaline substances (such as water glass, asbestos, potassium and sodium compounds, etc.)

    when employing quartz glass products in high temperature, which is made of acid material. 

    Otherwise product anti- crystalline properties will be greatly reduced.

Beijing Zhong Cheng Quartz Glass Co.,LTD (ZCQ ) is a full value-added factory  in custom quartz products manufacturing. We believe customers should be regarded as root of the trees if a company desires flourishment and fruits. Our mission is to provide a comprehensive suite of services related to meet your needs. We go out of our way to ensure that you receive the good service and personal attention you deserve.

EXW Price- In past  2015, we ZCQ manufactured and exported USD$600,000 quartz products. 

ISO 9001and ROHS Certified –We are ISO 9001 and RoHS Certified, and will provide any certifications you need about the quality of our products. Our company founding and manufacturing history can be dated back to 1998.

Quotes in 24 Hours or Less– Each Enquiry is replied within 24 hours. Individual sales representative is also pleased to answer your phone call within or out of office time. Please send email us in case international phone call cant be reached.

Low Order Minimum – Just $35 for you to order any group of quartz products in or out of stock.

Custom and prototyping are welcome–We welcome custom quartz products to meet your exact specifications. With a team of senior quartz engineerings, we can also offer advises on product design for free.

Prompt Lead Times For the products in stock, products  will be delivered in 1 or 2 days. For customed products, it will take 5-10 days. No matter what type, we try to understand and support customer’s  requirement.

On-Time Delivery In 5-7 or 10-20 days, Product parcel shall arrive at assigned destinations.

Shipping methods via China post(15-20 days) Epacket (10-15days) EMS(7-10days) Fedex(5-7days) DHL(5-7days)

Free Samples We are pleased to send free samples to customers whoever interested in business and cooperation with us. Shipping charge shall be paid by customers .

Company tour invitation ZCQ invites guests to visit our company after long day meeting and get relaxed in nature. Our company is also sitted in arms of mountains and river.

With over 20 years'experiences in quartz glass area. ZCQ  will provide you the most competitive price and high quality 

We have got many Certificate past 20 years, We have advantages in quality and price in local China market.

They are widely used in optical instrument, sight glass, observation window for furnace, semiconductor,photoelectron, military industry, metallurgy, and test for Lab. 

Questions and help

If you have any questions concerning products, please call us at 86-10-89770383 , 86-18701374721 or email us .

Order Acceptance and Pricing

ZCQ will provide a Pro Forma Invoice as confirmation on customers’ order.

Production will be arranged in line with technical specification within the invoice once payment received .

Payment Terms

Advanced T/T Credit Card Payments: ZCQ accepts Visa, MasterCard, and American Express.

We also accepts paypal payment .

Shipping & Handling

Freight Policy: If you have a freight collect account with any shipping carrier, please tell us in advance.

Or we will advise you a most economic method of shipment before checkout.

Return/Guarantee Policy

A Return Merchandise is to be returned on the original shipping form. Returns may be subject to freight. Credit will not be issued until the return has been received and inspected by ZCQ. Please send us an email and include your order number.

package: protection paper,carton , Acoording customer need.

Shipping methods and charges:

China post(15-25days)

Epacket to USA (10-15days)

EMS(7-10days)

Fedex(5-7days)

DHL(5-7days)

Actual shipping charge will be calculated upon product weight.

 Why to choose ZCQ ?

We have more than 20 years'experiences in Quartz Glass manufacturing ,

We have proffesional engineerings and professional technical. We have many advanced equipments and technical guidence .

What is your advantages ?

Our advantages is : Most competitive price +High quality +afer good services + high  accuracy