Everyone, regarding the pipe openings shown in the attached drawings, it is possible to tell from their appearance whether they were made by gas cutting or by a angle grinder...
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Everyone, regarding the pipe openings shown in the attached diagram, can we tell from their appearance whether they were made by gas cutting or by a angle grinder? ? ?
It should be a hole made by gas cutting, with color changes, cutting marks, and slag. But it’s very beautiful.
Look at those lines left by the cutting process; they are clearly signs of gas cutting.
Gas cutting for opening holes – the thickness of the walls at the openings is uniform, whereas grinding with a grinding wheel does not achieve this result
Yeah, I agree with what was said above – it was cut using gas welding
Oxyacetylene cutting – it must be oxyacetylene cutting! Some are molten, some have wind lines
It’s an oxy-cut opening; the marks are very obvious, with signs of overheating and slag.
This post was last edited by callcallcall on 2015-10-19 08:15. Thank you to all for your replies! This is the instrument port. Is it possible that when welding the instrument port onto the pipe, the insertion depth of the instrument tube was insufficient, causing the melted welding material to flow in through the gaps and turn the inner wall black? Additionally, the high temperature during welding may have caused the edges of the opening to change color or get oxidized? If it was gas cutting, why are there no larger granular remnants of melted slag? Also, in the picture below, it’s possible to see how it opens, and what the differences are from the previous one.
How long will it take to work on such thick pipes using a angle grinder? It’s better to cut them with gas cutting and then grind them
It’s obviously a hole cut by gas cutting; it definitely doesn’t look like something created by a angle grinder
Judging from the appearance, it seems to be a cut made by gas cutting; without a reference point, it’s hard to determine the size, but it probably doesn’t exceed DN50. A angle grinder can’t be used for this task