电焊机2026，Vol.56Issue(5)：80-87,8.DOI:10.7512/j.issn.1001-2303.2026.05.09
储气库工程站场管道设计施工标准对比及焊接工艺评定分析
Comparative Analysis of Design and Construction Standards for Station Pipelines in Gas Storage Projects and Welding Procedure Qualification
摘要
Abstract
Gas storage station pipelines involve well sites,gathering and distribution stations,injection-production stations,valve chambers,and distribution stations.The pipelines at various stations fall into three categories—gathering pipelines,industrial metal pipelines,and long-distance pipelines—which are governed by different design standards including GB 50349,GB/T 20801,and GB/T 34275,respectively.This paper compares the core differences among the three pipeline cat-egories in terms of design,construction acceptance,and welding procedure qualification.In design,GB 50349 additionally accounts for medium corrosion effects on the basis of long-distance pipeline wall thickness calculation,while GB/T 20801.3 incorporates manufacturing minus tolerance and machining tolerance.In construction acceptance,long-distance pipeline sta-tions require 100%non-destructive testing,gathering pipelines determine testing ratios based on design pressure and me-dium characteristics,and industrial metal pipelines classify testing ratios by GC1/GC2 grades.In welding procedure qualifi-cation,SY/T 0452 and NB/T 47014 classify qualification factors into essential,supplementary,and non-essential factors,whereas GB/T 31032 uses the concept of basic elements without explicitly defining three categories.Regarding preheat tem-perature changes,SY/T 0452 requires re-qualification when the temperature is reduced by more than 50℃,while NB/T 47014 treats such changes as supplementary factors.In accordance with TSG 31-2025,it is recommended that valve cham-bers and distribution stations temporarily follow the requirements for long-distance pipelines.Within the same project,uni-fied standards and material specifications should be adopted for the same category of pipelines to reduce operation and main-tenance complexity.关键词
储气库/站场管道/标准对比/焊接工艺评定/施工验收Key words
gas storage/station pipeline/standard comparison/welding procedure qualification/construction acceptance分类
能源科技引用本文复制引用
刘慧超,王旭锋,刘向薇,杜明俊,陈世璐,苗恩博..储气库工程站场管道设计施工标准对比及焊接工艺评定分析[J].电焊机,2026,56(5):80-87,8.基金项目
国家重大科技专项—储气库安全监测与工程新技术装备研究(FL4025S078) （FL4025S078）
