Regarding GB24511 and GB/T4732-2007
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I would like to ask everyone: can GB/T4732-2007 still be used for steel plates in pressure vessels? Can it be used as long as its chemical composition and mechanical properties meet GB24511 standards? The following is what can be found on the official website: For materials in stock that were ordered in accordance with the standard \"Hot-rolled stainless steel plates and strips\" (GB/T 4237-2007), each pressure vessel manufacturer shall compare their chemical composition and mechanical properties, etc., with the technical requirements specified in GB 24511-2009, based on the quality certificates or retest results. If they meet these requirements, such materials can be used in the manufacture of pressure vessels. Once the fixed capacity regulations are officially implemented, manufacturing units should use materials specified in GB24511-2009 to produce pressure vessels.
"Once the fixed capacity regulations are officially implemented, manufacturing units should use materials specified in GB24511-2009 to produce pressure vessels. " ----------Fixed-size tolerance gauges are now in use~~~~ If they truly cannot be obtained on the market, and it is confirmed that the 4237 material meets the requirements of 24511, then we usually discuss the matter with the boiler inspection agency; if they agree, we use 4237, otherwise.......... Although this isn’t the best solution, there’s nothing else we can do! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! Forced...........
From now on, both design and manufacturing must be carried out in accordance with fixed capacity specifications; manufacturing units shall use materials specified in GB24511-2009 to produce pressure vessels. -
It is basically impossible to find steel plates that meet the new standards on the market; most steel mills do not produce steel according to these new standards. The only option is to use steel that meets the old standards, as long as it passes re-inspection and is thus considered to conform to the new standards. Left with no choice, hahahahaha.
The original poster got 4732 and 4237 wrong!
GBT 24511 is used for pressure equipment, while GBT 4237 is used for general equipment. The General Administration for Quality Supervision, Inspection and Quarantine has issued relevant regulations on this.
Once the transition period is over, companies will start producing