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GB/T 12237-2021 in English
Steel ball valves for petroleum, petrochemical and allied industries
valid
Issued on:2021-03-09
$588.00 -
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GB/T 12237-2007 in English
Stell ball valves for petroleum petrochemical and allied industries
superseded
Issued on:2007-04-18
$120.00 -
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