News and Information
news
03
2026
-
02
How do you assess the quality of magnesium oxide boards?
Source:
1. Observation of Cross-Sectional Crystallization
Premium slab: The cut surface exhibits a fine, dense crystalline structure (reminiscent of marble veining) with no grayish or dark inclusions.
Low-quality board: rough cross-section with porosity, often containing organic fillers such as wood shavings or straw.
2. Surface Flatness Test
Use a 2-meter straightedge for inspection; the gap between premium panels shall be ≤1 mm (national standard: ≤2 mm).
The diagonal deviation shall be less than 3 mm/m (Greenzhe’s measured value is 0.8 mm/m).
3. Percussion-based pitch identification method
High-quality board: The metallic tapping sound is crisp (frequency > 4000 Hz).
Low-quality panels: muffled sound (due to internal voids or uneven density).
4. Bending Test
High-quality panels (such as Lüzhe): With a 1-meter cantilever span, they can support 80 kg without cracking.
Low-quality board: Cracks appear when bent to 30°.
5. Water Absorption Test
Water‑drop test: On a high‑quality panel, water droplets exhibit the lotus‑leaf effect (contact angle > 100°).
After 24 hours of soaking, the water absorption and weight gain should be less than 3% (national standard: ≤8%).
Latest Updates
2026-05-22
Characteristics and Applications of Glass-Magnesium Purification Panels
Outstanding fire performance: The core material is Class A1 non-combustible (GB 8624-2012), remaining non‑combustible and producing no toxic smoke when exposed to fire, making it suitable for high‑fire‑safety areas such as operating rooms, P2/P3 laboratories, and electronic manufacturing facilities.
2026-05-08
What are the advantages of steel fire door core panels?
Robust construction and excellent impact resistance: Cold-rolled steel door frames (≥1.2–1.5 mm) and door leaves (0.8–1.2 mm) deliver exceptional mechanical strength, resisting deformation and external forces, making them ideal for high‑frequency use or high‑risk environments such as industrial facilities, stairwells, and utility shafts.
2026-04-22
What are the main functions of fireproof panels?
Fire‑retardant and flame‑resistant: Complies with Class B1 (decorative HPL) or Class A1 (inorganic fire‑proof board) non‑combustible/low‑flammability standards; does not promote combustion when exposed to fire and emits low smoke and toxicity. When used for partition walls, suspended ceilings, countertops, and other applications, it can effectively inhibit the spread of flames.
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