| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF | 
		
			| DL/T 777-2024 | English | 299 | 
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   | 
                    3 days [Need to translate]
                 | 
                    (Refractory materials for boilers in thermal power plants)
                 | Valid | 
                    DL/T 777-2024
                 | 
		
			| DL/T 777-2012 | English | 519 | 
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   | 
                    3 days [Need to translate]
                 | 
                    Bioler refractory material for thermal power plant
                 | Obsolete | 
                    DL/T 777-2012
                 | 
		
			| DL/T 777-2001 | English | 799 | 
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   | 
                    5 days [Need to translate]
                 | 
                    Technical requirements for boiler refractory of thermal power plants
                 | Obsolete | 
                    DL/T 777-2001
                 |