[Jewelry making - Article 00551] - Re: [Orchid] Acetylene - Safety Information

[Dave Arens]

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Hi Gang,

>      The problem acetylene gas in contact with copper is that it forms
>     a solid copper acetlyide.

    Brian's right on target with the above statement. 

    In fact the building codes in most of the US require that 'black
    iron pipe' be used for transporting fuel gases if they're piped from
    a central source to the point of use. 

    I know of instances where building inspectors have required building
    owners to remove copper gas lines & replace them with black iron
    pipe. The only exception to the black iron pipe is the short
    (usually 3 feet or less) length of flexible steel tubing used
    between the end of the pipe & the gas using appliance. 

    Dave  

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