After the revision of GB/T 24511-2017, can the old version of the standard still be used? Is it effective?

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Since it has been repealed, are the old standards still valid? Is it considered a violation to use the old version of the standard? Discussion 1: Have you already purchased this new standard material? So, for GB/T 24511, should the remaining material be used as is, or must it be retested according to GB/T 713.7 to ensure it meets the requirements before being used? Discussion 2: We issue certificates for scrap materials that comply with the new standards; they can be put into use only after being signed off by the responsible person. Discussion 3: Does anyone know how long the transition period is from GB/T 24511-2017 to GB/T 713.7? How do people usually proceed when buying stainless steel sheets these days? Discussion 4: Check the contract and the drawings. Discussion 5: What should be done when the drawings are based on the latest standards? After all, those new standards have already been implemented – is there any transition period? Discussion 6: There is no transition period; the standards specify the date of implementation (for more details on this issue, see Section 3 of this article). Discussion 7: It is possible to consult the local pressure vessel authority. Discussion 8: The implementation of GB/T 713 (new version) is scheduled for March 1, 2024. For drawings designed before March 1, 2024, GB/T 24511 can still be chosen; manufacturers can use GB/T 24511 when producing products based on those design documents. If the date specified in the design document is after March 1, 2024, then GB/T 713.7 must be selected. For reference only. 2 **Standard Classification** Standards are divided into mandatory national standards (GB) and recommended national standards (GB/T). **The standard number is composed of the **standard code**, the **sequential number of the standard’s issuance**, and the **year of issuance (using the last two digits of the year)**. 1) Recommended standards: Mandatory national standards are those that aim to protect human health, as well as physical and property safety, and are standards that must be enforced in accordance with laws and administrative regulations ； Recommended national standards refer to **standards** that are voluntarily adopted in aspects such as production, exchange, and use through economic means or market mechanisms. However, once a recommended national standard is accepted and adopted, or agreed upon by all parties to be included in economic contracts, it becomes a technical basis that all parties must abide by, carrying legal binding force. 2) Mandatory **standards: In China, mandatory **standards are those that must be enforced; they have the same legal force as foreign technical regulations. Products that do not meet these mandatory standards are prohibited from being produced, sold, or imported. Article 39 of the “Regulations on the Administration of Mandatory ** Standards” stipulates that: “Before the implementation of a mandatory ** standard after it is issued, enterprises may choose to apply either the existing mandatory ** standard or the new one.” \"After the implementation of the new mandatory **standard, the original mandatory **standard shall be repealed simultaneously.\"