| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF | 
		
			| SY/T 6789-2024 | English | 449 | 
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                    4 days [Need to translate]
                 | 
                    (Casing head usage specifications)
                 | Valid | 
                    SY/T 6789-2024
                 | 
		
			| SY/T 6789-2010 | English | 959 | 
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   | 
                    5 days [Need to translate]
                 | 
                    Specification of operation for casing head
                 | Obsolete | 
                    SY/T 6789-2010
                 |