Wholesale high quality heat resistant clear borosilicate 3.3 glass tube open end supplier

Main composition

SiO2

B2O3

Al2O3

Na2O+K2O

80±0.5%

13±0.2%

2.4±0.2%

4.3±0.2%

Physical and chemical properties

Coefficient of mean linear themal

expansion(20°C/300°C)

3.3±0.1(10–6K–1)

Softening point

820±10°C

Melting point

1260±20°C

Transformation temperature

525±15°C

Hydrolytic resistance at 98°C

ISO719-HGB1

Hydrolytic resistance at 121°C

ISO720-HGA1

Acid resistance class

ISO1776-1

Alkali resistance class

ISO695-A2

Detail specifications

Size

5-300mm

Wall thickness

0.8-10mm

Length

Regular 1500mm

Max length for big tubing(diameter>18mm):3000mm,

Max.length for small tubing(diameter<18mm):2350mm

15 kinds of Colors

Jade white, Opaque white, Opaque black, Amber, Transparent black, Dark blue, Light blue, Green, Teal, red, Dark amber, Yellow, Pink, Purple, Clear .

package

Carton.

Minimum Order Quantity

500KGS

Payment term

Usually 50% TT for deposit and 50% TT balance are against the copy of bill of lading.

Delivery time

Usually within 20 days after receiving your deposit

Port of shipment

QINGDAO

Supply ability

18000tons/year

Samples

Samples are free. Customers should pay for the shipping freight.