GB/T 21446-2025 Active National standards

GB/T 21446-2025 Measurement of natural gas flow by means of standardized orifice meter

Publish Date: 2025-10-05 Implement Date: 2026-05-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

Basic Information

Standard Code: GB/T 21446-2025

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Oil and gas gathering and transportation equipment

ICS Name: Volume equipment and volume measurement

Publish Date: 2025-10-05

Implement Date: 2026-05-01

Publisher: 国家市场监督管理总局、国家标准化管理委员会

Technical Committee: 全国石油天然气标准化技术委员会(SAC/TC 355)

Pages: 100 pages

Scope

本文件规定了标准孔板的加工、安装技术要求，提供了天然气质量流量、标准参比条件下体积流量和能量流量计算方法以及测量不确定度的评定。
本文件适用于单相天然气，取压方式为法兰取压和角接取压的节流装置，孔板开孔直径等于或大于12.5 mm，测量管内径等于或大于50 mm且等于或小于1 000 mm，直径比等于或大于0.1且等于或小于0.75，管道雷诺数等于或大于5 000的场合。

Development Information

Drafting Units:

中国石油工程建设有限公司西南分公司、中国石油天然气股份有限公司西南油气田分公司、国家石油天然气管网集团有限公司西气东输分公司、大庆油田设计院有限公司、北京博思达新世纪测控技术有限公司、成都航利阀门成套设备有限公司、北京燃气集团有限责任公司

Drafting Persons:

徐刚、杜通林、李万俊、宋超凡、罗明强、黄敏、黄和、肖迪、蒲黎明、任佳、关越、吴岩、王海兰、何敏、张志力、昝林峰、肖月根、房福生、黄杨挺、陈志、周海燕、张翰

Word Count: 178 Thousand words Pages: 100 pages

Replace the following standards

GB/T 21446-2008 Measurement of natural gas flow by means of standard orifice meter

Referenced Standards

Related Standards

GB/T 13235.3-1995 Active

GB/T 13235.3-1995 Petroleum and liquid petroleum products—Volumetric calibration of vertical cylindrical metal tanks—Electro-optical distance-ranging internal method

Publish Date: 1995-12-21

GB/T 6968-1997 Replaced

GB/T 6968-1997 Diaphragm gas meters

Publish Date: 1997-07-29

GB/T 17286.1-1998 Replaced

GB/T 17286.1-1998 Liquid hydrocarbons—Dynamic measurement—Proving systems for volumetric meters—Part 1:General principles

Publish Date: 1998-04-02

GB/T 17286.2-1998 Replaced

GB/T 17286.2-1998 Liquid hydrocarbons—Dynamic measurement—Proving systems for volumetric meters—Part 2:Pipe provers

Publish Date: 1998-04-02

GB/T 17286.3-1998 Replaced

GB/T 17286.3-1998 Liquid hydrocarbons—Dynamic measurement—proving systems for volumetric meters—Part 3:Pulse interpolation techniques

Publish Date: 1998-04-02

GB/T 17287-1998 Active

GB/T 17287-1998 Liquid hydrocarbons—Dynamic measurement—Statistical control of volumetric metering systems

Publish Date: 1998-04-02