Quartz Producing Expert
ISO9001ISO14001OHSAS18001
tolerance+/-0.2
Clear quartz crucible, silica crucible,quartz labware

Company: Donghai Shengda Quartz Products Co., Ltd

Certification: ISO 9001, ISO14001, OHSAS18001

 Advantage: cost price controlled well, high precision, good quality.

Product:quartz sleeve, opaque quartz tube,milky quartz/ large milky quartz tube,opaque quartz tube,milky quartz/ quartz heating tubes,milky quartz tube,infrared heater tube/ red quartz tube,quartz heater tube,quartz tube,quartz glass, quartz products,None ozone quartz tube,ozone free quartz tube,no ozone quart,low OH quartz glass tube,dehydroxyl tube, ozone free quartz tube,short quartz tube, quartz twin tube,quartz glass tube,quartz tube,twin tube,double hole quartz tube,quartz tube,twin quartz tube,double quartz tube,double bore quartz tube,quartz glass crucible/quartz apparatus,quartz crucible,Clear quartz crucible, silica crucible,quartz labware

Our clear fused quartz glass tubes are produced with the advantaged continuous melting method and controlled by automatic control system. These tubes advantages are high purity, good spectral transmission, well controlled dimension and low OH, etc. They’re the best heat resisting material for lamps like: halogen lamps, mercury lamps, metal halide lamps, etc. We can produce the tubes within a very large diameter rang: OD 3-80mm, thickness 0.6 – 2.0mm , length 800- 2400mm. Exhaust tubes with good CPK and are suitable for high-speed streamline producing. We also can apply some further processing like trim cutting, fire polishing, bending, pinching, grinding and others according to customers’ requirements. We also can control our tubes OH content within 20ppm\ 15ppm\10ppm\5ppm\2ppm as your special needs.

Dimensional Tolerance 
Range of OD OD          OD             Thickness     Siding    Out of Round   Bow/1220mm
≤ 6mm                    ± 2.0%            ± 10%          12%             2.0%           2.5mm
6.00-15.00mm         ± 1.25%          ± 8%            10%             1.5%           2.5mm
15.00-20.00mm       ± 1.25%          ± 10%          15%             1.5%           2.5mm

 20.00-25.00mm       ± 1.25%          ± 10%          15%             1.5%           2.5mm
25.00-30.00mm       ± 1.35%          ± 12%          15%             1.5%           2.5mm
30.00-80.00mm       ± 1.5%            ± 14%           15%             2.0%          2.5mm

 Physical properties:
Density Density 20 °C kg * m-3 (× 103) 2.2
Coefficient of Thermal Expansion:25-300 °C °C -1 (× 10-6) 0.56
Softening Point: (°C) 1710
Annealing point: (°C) 1230
Transformation point Strain point (°C) 1140
Young's Modulus: (Pa) 7.3 × 105

Application:

 The product is widely used: halogen lamps, mercury lamps, single-ended lamp, automobile lamp, stage lamp, thermocouple, copiers lights, water treatment lamp casing, all kinds of quartz vessels, pipelines and other fields.