| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard | 
		
			| GB/T 12777-2019 | English | 2139 | 
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  | 
                    Days<=11
                 | 
                    General specification for metal bellows expansion joints
                 | 
                    GB/T 12777-2019
                 | Valid | 
                    GB/T 12777-2019
                 |