Well known that molten metal Aluminum, Zinc,Copper ...fields is using thermocouple protection tube (thermalcouple case),heater protection tubes, riser tube (stalk feed pipe) for LPDC , traditional materials like SiC, graphite can’t work long time and cost much energy, that make end users higher production cost.

Currently Sialon (Sylon) is best material, then N-SiC, then Aluminum Titanate,then traditional SiC, then graphite. Since 2021, Sndou started R&D Sialon ceramic tube, now we got it.  our Sialon riser tube & protective tube guarantee 12 months.better thermal shock resistance & anti-corrosion performance, longer working life. specially for AL, Zn, Cu, Pb, Sn metallurgical industry.  If you want lower protection cost, want longer life tubes, welcome to inquiry us.