NBN EN ISO 10438-4:2008现行
Petroleum, Petrochemical And Natural Gas Industries - Lubrication, Shaft-sealing And Control-oil Systems And Auxiliaries - Part 4: Self-acting Gas Seal Support Systems
出版：Belgian Standards
专家解读视频
Defines requirements for support systems for self-acting gas seals (dry gas seals), for example as described in ISO 10439 and ISO 10440-1.
I.S. EN ISO 10438-4:2007 - Identical
DIN EN ISO 10438-4 (2008-07) - Identical
NEN EN ISO 10438-4:2008 - Identical
SS EN ISO 10438-4 Ed. 2 (2007) - Identical
UNI EN ISO 10438-4:2009 - Identical
NF EN ISO 10438-4:2009 - Identical
DIN EN ISO 10438-4 (2010-08) - Identical
ISO 10438-4:2007 - Identical
UNI EN ISO 10438-4:2004 - Identical
NF EN ISO 10438-4:2004 - Identical
BS EN ISO 10438-4:2007 - Identical
NS EN ISO 10438-4 Ed. 2 (2007) - Identical
SN EN ISO 10438-4:2008 - Identical
ONORM EN ISO 10438-4:2008 - Identical
