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Three types of end and outlet flanges are <strong>control</strong>led by API<br />
Spec. 6A. (10-4)<br />
That are 6B and 6BX flanges that can be used as integral, blind or<br />
weld neck flanges.<br />
Type 6B may also be used as threaded flanges.<br />
Some type of 6BX blind flanges may also be used as test flanges.<br />
The third type – segmented flanges are used on dual<br />
completion wells and are integral with the <strong>equipment</strong>.<br />
X – diameter of hub, m<br />
B – maximum bore, m<br />
T – flange thickness, m<br />
K – diameter of raised<br />
face, m<br />
BC – diameter of bolt<br />
circle, m<br />
OD – outside flange<br />
diameter, m
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