II. Product Uses

Suitable forHigh-temperature furnace, heat treatment furnace, vacuum furnace, sintering furnaceIn industrial equipment, asProtective tube, support tube, heating element protective sleevefor use, etc.

III. Product Series and Material Specifications

1. HB Series

• Chemical composition：SiO₂ 40%，Al₂O₃ 56%

• Operating temperature：** 1500℃

• CharacteristicsEconomical price, suitable for medium to high temperature environments.

2. SSA-S Series

• Chemical composition：SiO₂ 0.1%，Al₂O₃ 99.6%

• Operating temperature：** 1800℃

• CharacteristicsHigh-purity alumina, resistant to high temperatures and corrosion, suitable for advanced heat treatment.

3. SSA-H Series

• Chemical composition：SiO₂ 3%，Al₂O₃ 95%

• Operating temperature：** 1600℃

• CharacteristicsHigh cost-performance ratio, suitable for general high-temperature environments.

IV. Product Dimensions and Prices (Partial Examples)

✅ HB Series (Unit: Outer Diameter × Inner Diameter mm)