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18-06-2009
Corrected version June 2009
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2009-06-11
New SBC covering manholes and inspection chambers in traffic areas
and deep underground installations
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2009-03-23
Correct version, January 2009
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2009-03-17
INSTA SBC 12201 March 2009 has been updated, replacing the April 2007 version
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2009-02-10
New SBC for PP fittings with outside seals and system.
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