Okay, here is the translation following your instructions: Pipeline Engineering Design Code GB50253-2003

Author: China National Petroleum Corporation
Publisher: China Planning Press
Publication Date: 2003-09-01
Features: During the revision process, the standard drafting group summarized years of experience in oil pipeline engineering design, drew on existing domestic industry standards and relevant standards from developed countries abroad, and widely solicited opinions from relevant units across the country. Major issues were discussed multiple times, and after repeated revisions, the draft was reviewed and finalized. Compared to the original national standard "Code for Design of Oil Pipeline Engineering" (GB50253-94), this standard mainly has the following changes:
1. Added chapters and clauses on crude oil and liquid petroleum gas (LPG) transportation systems, as well as provisions for health, safety, and environment (HSE) and energy conservation;
2. Elevated safety and fire prevention standards;
3. The content is more comprehensive and reasonable.
This standard is managed by the Ministry of Housing and Urban-Rural Development and is responsible for interpreting mandatory provisions. The daily management is handled by the Professional Standardization Committee of Oil and Gas Fields and Pipeline Construction Design, and the specific technical content is interpreted by China National Petroleum Pipeline Engineering Co., Ltd.
During the implementation of this standard, it is hoped that all units will summarize experience based on engineering practice, pay attention to accumulating data, and if any modifications or supplements to this standard are needed, please send your suggestions and relevant materials to:
China National Petroleum Pipeline Engineering Co., Ltd. (Address: No. 22 Jinguang Road, Langfang City, Hebei Province; Zip Code: 065000; E-mail: chfeng@cppe.com.cn) for reference in future revisions.