E-mail Us
High temperature resistant
High temperature resistant
Explosion-proof ceramic
Explosion-proof ceramic
Highly corrosion resistant
Highly corrosion resistant
Extends equipment lifespan
Extends equipment lifespan

GP-21# Super-Grade Acid & Alkali Resistant Enamel Frit

GP-21# offers exceptional resistance to both acids and alkalis, with its alkali resistance being superior to that of GP-10#. It is suitable for use with all strong alkaline media at room temperature, as well as strong alkaline media at temperatures below 100°C and with a pH value of up to 13.


Get A Free Quote

Technical Parameters of

GP-21# Super-Grade Acid & Alkali Resistant Enamel Frit

* Only powder form can be delivered to overseas regions

Technical indicatorsUnitMethodIndicatorsTest Data
168-hour corrosion resistance to 20% boiling hydrochloric acidsg/(m².d)GB/T7989≤0.550.2-0.3
24-hour corrosion resistance to 0.1mol/L 80℃ sodium hydroxidesg/(m².d)GB/T7991.1≤2.750.5-1.0
Resistance to abrupt temperature difference variationsGB/T7991.3≥200200-220
Mechanical shock resistanceJGB/T7991.4≥220x10⁻³280-320
ColorCobalt blue
Applicable toReactors & stirring accessories


News & Inspirations
GWIPPO
GWIPPO Knowledge Corner | The Firing Process of Ground Coat Enamel
2026. 06 02
GWIPPO Knowledge Corner | The Firing Process of Ground Coat Enamel
During the firing process of the ground coat enamel, complex physical and chemical reactions occur between the steel substrate and the ground coat. In an oxidizing atmosphere, an oxide film forms on t...
GWIPPO Enamel Tips | Causes and Countermeasures for Off-Color Spots in Glass-Lined Enamel Coatings
2026. 05 18
GWIPPO Enamel Tips | Causes and Countermeasures for Off-Color Spots in Glass-Lined Enamel Coatings
AbstractThe performance of a glass-lined enamel coating is closely related to the chemical composition of the enamel glaze, the frit smelting process, the enameling/firing process, the thickness and u...
No.8 Yishan Road, Yumen Industrial Park, Shengang, Jiangyin City, Jiangsu Province
ky@gwippo.com +86-18961661782
We use cookies on this site, including third-party cookies, to deliver the best experience for you.
Accept Cookies
Read Privacy Policy