Technical data

Marks can be made on the outer surface of the pipe as a visual aid to help indicate
the required scraper coverage. Marks made on the pipe should not be made with a
“grease pencil” or other type of petroleum based marker that will leave a contaminate
behind. Central Plastics Company’s only requirement for markers used on PE
pipe during electrofusion preparation is that the marker be non-petroleum
based. Grease pencils are generally petroleum based and therefore should not be
used on PE pipe prior to electrofusion joining.
We have found many different types and brands of markers to be acceptable and
recommend that any permanent marker of a color that will show on the pipe material
can be used. The permanent type markers, such as the, “Sharpie”, “Marks-A-Lot”
and “Magic Marker” by Avery are adequate for marking yellow or light colored pipe.
Fast drying paint pens, such as those manufactured by PENTEL and Faber Castell,
also work well and are available in colors that will show well on black pipe; it is
sometimes necessary to allow for drying when using paint type pens. We have also
found that a wax based “China Marker”, although not permanent, works well for mark-
ing black pipe. We have found no advantage of one type of marker, permanent or
paint, over the other.
Markers
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