China 'GB/T 20657-2022
' standard english version:
NATIONAL STANDARD OF THE PEOPLE'S REPUBLIC OF CHINA
GB/T 20657-2022
Oil and gas industry - Performance formulas and calculations for casing, tubing, drill pipe, and line pipe used as casing or tubing 石油天然气工业 套管、油管、钻杆和用作套管或油管的管线管性能公式及计算
Issued Date:2022/12/30
Implemented Date:2023/4/1
Issued by:
The Standardization Administration of the People's Republic of China
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