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| Mailing Address |
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| Joint Perforating Company Ltd |
12 Buntsford Park Road
Bromsgrove
Worcestershire
B60 3DX |
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| Telephone / Fax |
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| Tel |
01527 578686 |
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| Fax |
01527 837792 |
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| Email |
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 info@jpc-ltd.co.uk |
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Technical Information
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The following are the formulas we use
to calculate the open area of our perforated tubes
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| Open area is a perforating trade term
used to describe the number of holes per square inch.
The more holes per square inch, the larger the open
area. Open area is expressed as the percentage of open
space in relation to the total area. |
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Page Last Modified: 18/10/06 17:55
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