GB/T 19830-2017石油天然气工业油气井套管或油管用钢管国家标准
英文:Petroleum and natural gas industries—Steel pipes for use as casing or tubing for wells GB/T 19830-2017介绍: 国家标准《石油天然气工...
英文:Petroleum and natural gas industries—Steel pipes for use as casing or tubing for wells GB/T 19830-2017介绍: 国家标准《石油天然气工...