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IRSE Exam Forum › MODULES › Module 5 › Train Detection v
cobalt expansion on fishplate joints


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cobalt expansion on fishplate joints
Archie Offline
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#1
22-02-2010, 08:08 PM
what is the purpose of cobalt expansion on the holes on a joint.

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cobalt expansion on fishplate joints - by Archie - 22-02-2010, 08:08 PM

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