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. 标准：常见的标准包括标准化组织（ISO）和电工委员会（IEC）发布的标准。例如，ISO 15761-1《工业阀门-截止阀-部分：构造和尺寸》和IEC 60534-4-2《流体控制设备-阀门-第4-2部分：工业过程阀-阀 D表示法 的阀门型式》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. 标准：标准由标准化管理委员会（SAC）发布。适用于电站高压截止阀的标准包括GB/T、GB、GB/T等系列标准。例如，GB/T 12237-2015《工业阀门通则》和GB/T 12238-2008《工业阀门术语》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. 行业标准：除了标准和标准，根据不同行业的需求，还可以参考相应行业协会或组织发布的标准。例如，在发电行业，可以参考电力行业标准，如DL/T、DL、DL/T、DL/T等系列标准。例如，DL/T 1081-2013《火力发电厂安装工程建设与设计上基本标准》和DL/T 592-2014《电力企业施工与质量检验规范 法兰阀门构筑物》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，生产厂家在生产电站高压截止阀时，通常会参考以上标准，并严格按照标准要求进行设计、制造和检验，以确保产品的质量和性能符合要求，并满足电站系统的可靠运行。

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.