High temperature resistant stainless steels are widely used in petroleum, chemical, pharmaceutical, papermaking, shipbuilding, food, nuclear power, military, machinery, environmental protection, automobile manufacturing and other industries at home and abroad; materials: 304, 304L, 316L, 304H, 347H, 304LN, 321H, 316Ti, 316H, 317, 317L, 321, 310S, S31803, 904L and ferrite (409/409L, 410, 430, 436/436L, 439/439L, 444) and other common steel grades and some special steel grades.