HDZS-65 is used as glass contact refractory in alkali-free glass furnace: paving or sub-paving in melter bottom, forehearths, flow blocks and back-up blocks.

• 无碱玻璃窑玻璃接触部位：熔化池铺面砖及铺底亚层、通道壁及通道底、流槽砖、拉丝砖。还用于熔化池池壁背衬及通道背衬砖。