Q235B steel plates cannot be used to manufacture Class III pressure vessels.
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Q235B steel plates cannot be used to manufacture Class III pressure vessels. Which standard contains this regulation?
Apart from pressure, it is related to volume
No standard was found to contain such a provision; however, due to other relevant regulations, Q235B is very rarely used in Class III pressure vessels – at least not yet...
1. Q235 is not used as steel for pressure vessels under w conditions, and this seems to be the trend. 2. Class III containers either have high pressure or involve media with a high degree of hazard. Appendix D, section 150.2 stipulates that it cannot be used in cases where the pressure is greater than 1.6 MPa or where the medium poses an extremely high level of hazard. Standards are not engineering regulations nor design guidelines; they aren’t that detailed. The requirement of 150 increases the safety factor for Q235 and adds additional inspection requirements – you should understand what this means.
There’s no standard that requires this, but who is still using Q235 steel plates for Class III containers in their designs these days? In fact, Q235 steel isn’t much cheaper than other steel plates used for pressure vessels; nowadays, steel is available at very low prices
What was said upstairs is all correct – they’re already using Class III containers, which saves on material costs
Well, indeed that statement isn’t precise; look at the charts in the capacity regulations – generally the pressure doesn’t exceed 1.6. If it’s classified as category three, then the volume is quite large
It’s not to save money on those materials; it’s a true or false question.
Moderator, could you come up with some more meaningful questions? lol
Moderator, pay some attention – why do you keep bringing up such things? . . . The problem of
This post was last edited by HSLJHZ on 2015-8-13 at 17:35. These are exam questions from a training session organized by the company; answers along with explanations are required. I currently only know that it cannot be used in Class III pressure vessels, but I can’t find any evidence for this, so please help me – many hands make light work.