Needed: BS 1868:1975+A1:1990 Specification for steel check valves
BS 1868:1975+A1:1990 Specification for steel check valves (flanged and butt-welding ends) for the petroleum* petrochemical and allied industries standard by BSI Group* 11/28/1975.
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Re: Needed: BS 1868:1975+A1:1990 Specification for steel check valves
[url]http://www.mediafire.com/file/nas8y135dz6213j/BS_1868-1975_A1-1990_C1_2010.pdf[/url]
Re: Needed: BS 1868:1975+A1:1990 Specification for steel check valves