he non rust of the stainless steel means it can have certain chemical stability around the corrosion mediums of air,water,acid,alkali,salt others.But it does not mean the stainless steeldoes not rust completely.Whether the stainless steel will rust or not is influenced by the molecular structures,the processing technic,the operating environment and so on.To prevent the stainless steel from rusting extremely,please pay attention to the following factors:

·The die and casting parts should be carried out the solution treatment according to requirements.
·Choosing the reasonable stainless steel mark according to the operating environment.
·Selecting the reasonable surface treatment
·Taking protection measures of hardware products into action on site.
·The design and application of the hardware should aviod soot formation formation and seeper.
·Cleaning the hardware regularly to aboid long time smudge.