To optimize combustion efficiency. the structural characteristics of the zoned and staged double P-type gas-fired radiant tube were improved. The corresponding experimental and numerical studies were performed on the new radiant tube and the results show that deviations in the monitoring parameters are less than 1%. except for a NOx concentration of 11. https://www.nacrack.com/flash-find-Orthofeet-Edgewater-Men-s-Athletic-Shoe-hot-choice/