GB 20800.3-2008 Standard PDF file download ; GB 20800.3-2008 Standard english preview version download

GB Standard Code	GB 20800.3-2008
Standard Category	China National Standards
GB Standard English Title	General rules of explosion-protect techniques of reciprocating internal combustion engines for explosive atmospheres - Part 3: Group I engines for use in underground workings susceptible to firedamp and/or combustible dust
GB Standard Chinese Title	爆炸性环境用往复式内燃机防爆技术通则第3部分：存在甲烷和（或）可燃性粉尘的地下矿区巷道用I类内燃机
Chinese Version Price	$15 USD per 50 pages
English Translation Price	About $15 per 1 page; Inquire us for detail price

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