HBG Round Tube – Specification & Description Material: HBG (Hard Borosilicate Glass) Shape: Round Colour: Transparent Length: 300 mm / 450 mm / 600 mm (custom available) Outer Diameter: 6 mm to 50 mm Wall Thickness: Uniform, as per laboratory standard Heat Resistance: High (up to ~500°C) Chemical Resistance: Excellent resistance to acids, alkalis & solvents Finish: Smooth, fire-polished ends Applications: School & college laboratories Chemistry & physics experiments Heating and chemical transfer Glass apparatus fabrication

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