PN-TQ series argon purging plug for ladle bottom is made of high purity, high density, high strength material and MAS matrix optimization system. The series of products are characterized by stable structure, wide air permeability, easy adjustment of gas flow, high blowing rate, erosion resistance, long service life and so on. PN-TC series ladle bottom argon-blown gas permeable brick is a new type of ceramic composite gas permeable brick, which is made of high-tech ceramic and traditional slit as gas channel, and high-performance castable as peripheral material. This series of products continue the advantages of PN-type plug, because the use of high-temperature ceramic as a gas channel, ceramic composite plug has a higher blowing rate and service life. This product has obtained the patent license. Packing: wooden case or carton. Note: storage should be moisture-proof measures, keep dry. Do not use if you find rust marks on the steel shell of the breathable brick. Shelf life: 6 months.