The following measures can be taken to improve the low-temperature brittleness of 316L stainless steel strip:

1. Choosing an appropriate heat treatment method: By using appropriate heat treatment methods such as solution annealing, austenitizing, or quenching, the grain structure of stainless steel can be improved, thereby reducing low-temperature brittleness.

2. Adding appropriate alloying elements: Adding specific proportions of alloying elements such as nickel, molybdenum, etc. to 316L stainless steel can increase its toughness at low temperatures and reduce the risk of low-temperature brittleness.

3. Control carbon content: Properly controlling the carbon content of 316L stainless steel strip can reduce its brittleness at low temperatures and avoid brittle fracture.

4. Make good use of heat treatment process: When conducting heat treatment on it, it is necessary to strictly control the temperature and cooling rate to avoid excessive or rapid cooling, and to avoid increasing the risk of brittleness.

5. Avoid excessive cooling: When using 316L stainless steel strips, try to avoid excessive or rapid cooling, especially in low temperature environments to avoid brittle fracture.

6. The correct welding method: When welding, a welding method suitable for low-temperature environment should be selected, and welding parameters should be strictly controlled to avoid brittle fracture in the welding area.