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  1. kamranabbasian

    UL requirments for Variable Speed Drive 4500 520kVA NEMA type 4 enclosure

    Our customer wanted us to make a heat exchanger to cool down a Variable Speed Drive 4500 520kVA NEMA type 4 enclosure. This heat exchanger will be enclosed to the enclosure. My question is as this heat exchanger is out of enclosure system, does it need to be NEMA type 4 certified? is there any...
  2. kamranabbasian

    Black anodize touch up mark per MIL spect

    Please discard this post if you have already seen in Chemical process engineering Forum. We machine aluminum part and for some customer we back anodized the part per Mil-A-8625, Type II, Class 2. Does anyone know what kind of touch up mark we should use that complies with military standard? Do...
  3. kamranabbasian

    Black anodize touch up mark per MIL spect

    We machine aluminum part and for some customers we back anodized the part per Mil-A-8625, Type II, Class 2. Does anyone know what kind of touch up mark we should use that complies with military standard? Do you know any supplier for black touch up mark per mil spec MIL-DTL-81706?
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