经过退火及冷加工的热轧不锈钢棒材，其表面质量更高，强度也更高。
Hot rolled stainless steel bars that are annealed and cold worked to produce a higher surface quality and higher strength.
铬镍不锈钢在退火状况下通常是无磁性的，在冷加工之后，有的会有磁性的。
Chromium nickel stainless steel is usually non - magnetic in the annealed state, some of which are magnetic after cold working.
当然，零件的任何冷加工都必须在有控制的情况下进行。
Any cold working of the part must of course be done under control led conditions.
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