The production standards for high-pressure shut-off valves in power plants usually refer to international standards, national standards, and industry standards. The following are some common production standards for high-pressure shut-off valves in power plants:

1. 標準：常見的標準包括標準化組織（ISO）和電工委員會（IEC）發布的標準。例如，ISO 15761-1《工業閥門-截止閥-部分：構造和尺寸》和IEC 60534-4-2《流體控制設備-閥門-第4-2部分：工業過程閥-閥 D表示法 的閥門型式》等。

1. International standards: Common international standards include those issued by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). For example, ISO 15761-1 "Industrial valves - Globe valves - Part 1: Construction and dimensions" and IEC 60534-4-2 "Fluid control equipment - Valves - Part 4-2: Valve types for industrial process valves - Valve D representation".

2. 國家標準：國家標準由國家標準化管理委員會（SAC）發布。適用于電站高壓截止閥的國家標準包括GB/T、GB、GB/T等系列標準。例如，GB/T 12237-2015《工業閥門通則》和GB/T 12238-2008《工業閥門術語》等。

2. National Standards: In China, national standards are issued by the National Standardization Administration Committee (SAC). The national standards applicable to high-pressure shut-off valves in power plants include series of standards such as GB/T, GB, and GB/T. For example, GB/T 12237-2015 "General Principles for Industrial Valves" and GB/T 12238-2008 "Terminology of Industrial Valves".

3. 行業標準：除了標準和國家標準，根據不同行業的需求，還可以參考相應行業協會或組織發布的標準。例如，在發電行業，可以參考電力行業標準，如DL/T、DL、DL/T、DL/T等系列標準。例如，DL/T 1081-2013《火力發電廠安裝工程建設與設計上基本標準》和DL/T 592-2014《電力企業施工與質量檢驗規范 法蘭閥門構筑物》等。

3. Industry standards: In addition to international and national standards, according to the needs of different industries, standards published by corresponding industry associations or organizations can also be referenced. For example, in the power generation industry, reference can be made to the power industry standards, such as DL/T, DL/T, DL/T, and other series of standards. For example, DL/T 1081-2013 "Basic Standards for Construction and Design of Thermal Power Plant Installation Engineering" and DL/T 592-2014 "Code for Construction and Quality Inspection of Electric Power Enterprises - Flange Valve Structures".

需要注意的是，生產廠家在生產電站高壓截止閥時，通常會參考以上標準，并嚴格按照標準要求進行設計、制造和檢驗，以確保產品的質量和性能符合要求，并滿足電站系統的安全可靠運行。

It should be noted that manufacturers usually refer to the above standards when producing high-pressure stop valves for power plants, and strictly follow the standard requirements for design, manufacturing, and inspection to ensure that the quality and performance of the products meet the requirements and meet the safe and reliable operation of the power plant system.