Fused Cast Refractory Supplier China: Furnace Procurement

Author : wei yi | Published On : 06 Nov 2026

Glass-contact zones in a furnace do not all wear the same way. Give a fused cast refractory supplier in China the furnace drawing and glass chemistry before choosing an AZS grade.

Map the glass-contact zone and operating conditions before choosing AZS-33, AZS-36 or AZS-41. AZS grades are selected by application and corrosion environment; a higher grade is not automatically the best answer everywhere. Confirm glass composition and corrosion history from the existing furnace. Glass chemistry and contact position influence wear mechanisms that are not revealed by a brick’s appearance. Ask for drawings that show each block's position, orientation and expansion allowance. Review chemical composition and density results tied to a production batch. Number and orient every irregular block against the designer’s map before dispatch.

Check casting defects, cracks and surface condition against agreed acceptance criteria. Plan cold machining tolerances for joints that must fit during pre-assembly. Cold joints must accommodate thermal expansion as specified by the furnace designer. Inspect numbering and packaging so the installation crew can locate each block.

Define heat-up schedule responsibilities with the furnace designer and installation contractor. Casting and surface acceptance should use agreed criteria for the particular block type. Record sample inspection and traceability before the bricks leave the factory. Compare total campaign risk and replacement difficulty rather than the brick price alone. Campaign downtime and difficult replacement locations may dominate the cost of a cheaper initial refractory order. Arrange a technical review when process temperature or glass chemistry changes.