Abstract: By changing the flame correction temperature, the effects of flame correction temperature on structure and properties of SA-213TP347H stainless steel tube were studied from the aspects of hardness, microstructure and precipitated phases. The results show that the higher the flame correction temperature was, the lower the hardness of the steel tube was after flame correction. The stainless steel tube didn't undergo phase change during the flame correction, and the microstructure was always single-phase austenite. If the flame correction temperature was too high, the stainless steel tube was prone to grain growth, overheating or even burning.