How to understand dedicated-grade high-strength studs?
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How should one understand dedicated-grade high-strength studs? Many of our containers are made of stainless steel; carbon steel tends to rust, and some clients require stainless steel studs, but S30408 studs do not belong to the high-strength category. How can this situation be resolved?
This post was last edited by Douwan on 2017-11-3 at 17:36. Special-grade, high-strength studs refer to the studs specified in HG/T20613/20634. Stainless steel studs should be made of strain-hardened stainless steel material.
The maximum grade for GB150 strain-hardened stainless steel is M27, and the range is too narrow, which results in excessive restrictions. I think many designs don’t follow the regulatory requirements at all in this regard.
The pipe flange bolts should be selected in accordance with the HG series standards, rather than using materials specified in GB150.2
Would it be better to separate the bolts, nuts, and stainless steel with an insulating flange?