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【国外标准】 Specification for Drill String Non-return Valves, First Edition, Includes Addendum 1 (2019) HISTORICAL
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2025-10-27
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标准简介适用范围：
暂无
标准号：
API Spec 7NRV (R2020) [ Withdrawn ]
标准名称：
Specification for Drill String Non-return Valves, First Edition, Includes Addendum 1 (2019) HISTORICAL
英文名称：
Specification for Drill String Non-return Valves, First Edition, Includes Addendum 1 (2019) HISTORICAL标准状态：
-
发布日期：
2001-07-01 -
实施日期：
出版语种：
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