**Standards for pipeline design

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Pipeline design codes vary depending on the application area and type of fluid. The following are the main categories along with representative codes: 1. Long-distance pipelines: GB 50251-2015 \"Code for Design of Gas Pipeline Projects\" is applicable to the design of long-distance natural gas pipelines, emphasizing the control of safety aspects related to the pipelines themselves; it takes international standards ISO 13623 and ASME B31.8 as references. GB 50253-2014 \"Code for Design of Oil Pipeline Engineering\" is applicable to the design of long-distance transmission pipelines for liquid media such as crude oil and refined oil. II. Industrial and power pipelines: GB 50764-2012, \"Code for Design of Power Pipelines in Power Plants\", is applicable to the design of pipelines for steam, water, gases, and hazardous materials in thermal power plants, specifying requirements regarding material selection and design pressure. ASME B31.8-2022, the internationally recognized standard for gas transmission and distribution pipeline systems, covers topics such as the calculation of pipeline wall thickness and pressure testing. III. Other specific standards: GB/T 34275-2017 \"Code for pressure pipelines – Long-distance pipelines\": Provides additional details on the design of long-distance pipelines. GB 50156-2002 \"Code for Design and Construction of Automobile Fuel and Gas Stations\": Addresses the design of pipeline systems in such stations. IV. Design Principles and General Requirements The pipeline layout must take into account safety distances and the thickness of the soil cover (≥0.9 m under traffic roads, ≥0.6 m under non-traffic roads). Material selection requires a consideration of medium properties, pressure, temperature, and environmental requirements. For a complete list of regulations or specific provisions, please refer to the **Ministry of Housing and Urban-Rural Development or relevant industry standard publication platforms. Some international standards (such as ISO 13623) can serve as supplementary references.