The utility model discloses a chute of nai impact abrasion welt that is used for blast furnace storing system to carry iron -smelting raw materials, including the welt main part, opening all around of welt main part has the countersunk head screw, still including hindering the material gusset, it sets up in the welt main part to hinder the material gusset. The utility model discloses a chute of nai impact abrasion welt has been solved about the very short technical problem of the whole cast rich chromium cast iron chute welt life among the prior art for the chute welt is fit for the working condition of chute more.