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Company: Donghai Shengda Quartz Products Co., LtdCertification: ISO 9001, ISO14001, OHSAS18001Advantage: 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,quartz heater tube,carbon quartz heater tube,far infrared quartz heater tube,uv quartz tubing,uv prevent quartz tube, uv quartz glass tubeOur 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% 2.5mm20.00-25.00mm± 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%2.5mmPhysical 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 × 105Application: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.