Download or read book GB T 9711 2023 Translated English of Chinese Standard GB T 9711 2023 GBT9711 2023 written by https://www.chinesestandard.net and published by https://www.chinesestandard.net. This book was released on 2024-09-23 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document specifies the manufacturing requirements for welded steel pipes and seamless steel pipes for the pipeline transportation systems of petroleum and natural gas industries, which include two product specification levels (PSL 1 and PSL 2).