British Standard

Petroleum and natural gas industries Drilling and production equipment Drill-through equipment The European Standard EN ISO 13533 2001 has the status of a British Standard NO COPYINGWITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW Copyright British Standards Institution Reproduced by IHS under license with BSI - Uncontrolled Copy Licensee BP Amoco 5928366101 No reproduction or networking permitted without license from IHS Not for Resale, 09 27 2005 00 22 23 MDT