Direct on frit it is a stable quality porcelain enamel frit, one coat one fire, can be applied to enamel cookware / gas stove / bbq. acid resistance black frit it is a high quality acid resistance black frit, one coat one fire, can be applied to enamel cookware / gas stove / bbq. Rtu matt enamel powder. general usage: it is a stable quality ready to use matt enamel powder , especially for oven / bbq / stove. ... this product is a kind of black matt glaze with delicate quality, used for one-coat work such as steel plate. indexes and parameter: a.appearance: gray powder, the surface is smooth and with no bubble structure ... Name: black rtu enamel powder a-10-3. a-10-3 is pre-grinding black enamel powder which fineness is 30 mesh. there would be 25-30g residue when 100g powder is passed through 140 mesh standard sieve. the coating made of such product has smooth surface, fine adherence, good stability and appropriate glossy could be obtained when firing temperature & time is controlled well. Enamel supplements u2013 for medium temperature enamels for copper, gold, silver, low carbon steel, window glass, stained glass, bulls-eye and spectrum glass, effetre (moretti), 400 series stainless steel and pottery (a.k.a. ceramics) glass painting u2013 enamel powder a series of vitreous enamel powders which fuse slightly below 1200u00baf.