The "Code for Measurement of Oil and Gas Transmission Pipeline Engineering" is now approved as a national standard, numbered GB/T50539-2017, and will be implemented from April 1, 2018. The original national standard GB/T50539-2009 "Code for Oil and Gas Transmission Pipeline Engineering Measurement" will be abolished at the same time. This specification is published on the website of the Ministry of Housing and Urban-Rural Development (www.mohurd.gov.cn), and is published and distributed by the China Planning Press organized by the Institute of Standards and Quotas of the Ministry of Housing and Urban-Rural Development. Ministry of Housing and Urban-Rural Development of the People's Republic of China July 31, 2017
GB/T 50539-2017 history
2017GB/T 50539-2017 Engineering survey specification for oil and gas transmission pipeline
2010GB/T 50539-2009 Engineering survey specification for oil and gas transmission pipeline