China National Standards

China industries—Procedures GB Standards List

  •  China "industries—Procedures" GB Standards List:
    • Standard  Code Standard Title Standard Class Order
    GB/T 21267-2017 Petroleum and natural gas industries—Procedures for testing casing and tubing connections
    石油天然气工业 套管及油管螺纹连接试验程序    		 China National Standards
    industries—Procedures
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