... 2.2 ( g / cm3 ) AOBO main products: quartz tube, quartz rod, quartz apparatus, quartz ball. Quartz crystal, quartz ... ring, quartz boat and various special-shaped quartz tube processing, and production of low ozone quartz ultraviolet ... tube diameter in the range of 6mm-300mm, a round, flat shape and a flaring, flanging, grinding and other processing. High temperature resistance, corrosion resistance ...