The 'face' of the weld may be slightly convex, flat, or slightly concave.
It is the first pass in a multiple weld joint.
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With large diameters like that you will most probably need to insert a weld-on 12 inch - 10 inch reducer at the point where the reduction is required. The pipe and reducer perimeter edges should be bevelled, say 45 degrees, for good weld penetration especially if the pipe conveys fluid under pressure.
1.cut 2.bend 3.weld
The 'face' of the weld may be slightly convex, flat, or slightly concave.
In a fillet weld, the leg and size are the same for the convex weld.
Icicles in pipewelding refer to the formation of unwanted protrusions or drips of weld metal that hang off the weld bead. This can happen due to improper welding techniques or settings, such as using excessive current, incorrect angle, or improper travel speed. Icicles can weaken the weld joint and should be avoided to ensure the quality and integrity of the weld.
You should not weld on concrete, as it can explode if heated
You should buy a new one cause if u weld it, the metal pieces might get mixed with your food.
A weld symbol is the shape drawn on a Print to tell the welder: how to prepare a welding joint, what process can be used to weld (mig, tig, arc, etc) what filler rod to use, how wide and long the weld should be, how to deal with the weld after your done (grind flush, brush clean, or nothing) and a million other things.... Its a tool that design engineers use to communicate what the weld needs to be to meet their design specifications.
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Depends on what you are welding, but generaly welds can meet, or even weld on top of a weld.
Weld mapping are visible marks that are seen on metal welded parts. Either they are welded together or repaired and sometimes you can tell who welded it, and when the weld was placed. Weld mapping is the process of assigning information to a weld joint to enable easy identification of its design (WPS), production (welders, their qualifications, date welded), quality (visual inspection, NDT) and traceability (heat numbers of materials joined & welding consumables). Weld mapping should also incorporate a pictorial identification to represent the weld number on the fabrication drawing, in case the designer does not nominate a weld number. You can use online weld mapping software such as Smart Welding Manager to create weld maps that provide 100% traceability as well as a pictorial representation.
Theodore Weld
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Porosity