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US$1739.00 · In stock
Delivery: <= 10 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB 50471-2018: (Coal Mine Gas Drainage Engineering Design Standard)
Status: Valid

GB 50471: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
GB 50471-2018	English	1739	Add to Cart	10 days [Need to translate]	(Coal Mine Gas Drainage Engineering Design Standard)	Valid	GB 50471-2018
GB 50471-2008	English	RFQ	ASK	5 days [Need to translate]	Code for design of the gas drainage engineering of coal mine	Obsolete	GB 50471-2008

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