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Stencil

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GI Doycon

Petroleum
Dec 20, 2017
2
What does the Stencil look like on the outside of a line pipe that specifies the type of seam?
 
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I've never seen any particular type of marking for the weld seam type.

But maybe that's me - why did you think that there should be a marking?

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Also: If you get a response it's polite to respond to it.
 
In most cases the stencil will identify the pipe, (who made it , Where, spec, mfg method, alloy, grade, size, testing, and so on) but the location of the stencil usually has nothing to do with the location of the weld.
There are some specs that require a line or stripe at the ends of each piece that is aligned with the weld. These are done however the mfg desires to do them.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy, Plymouth Tube
 
Just whatever you don don't get them to stick that data on a label on the inside of the pipe. Sounded like a good idea as it kept the barcodes etc away from grit blasting and coating, but was a nightmare when they all floated off down the pipe after commissioning and gummed up the valves downstream....

Section 11.2 of API 5L gives a good section on what should be stenciled onto the pipe/outer coating including pipe type (i.e. weld seam or SMLS)

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
 
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