How are the different levels of grassroots transition distinguished?
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How are the different levels of grassroots transition distinguished? I can see the welder working, but I have no idea which part of the work he is welding. Could anyone please tell me how to tell by looking at it?
Check the welding material used: handshake
There’s also a mouth under the nose; just ask directly, right?:lol:lol:lol:lol:lol:lol:lol
If it’s on-site and the workers are not welders, who should be asked? ?
I can’t see any indication that the welding is complete – the transition layer isn’t visible. P: The base layers are carbon steel, alloy steel, and heat-resistant steel – can these be distinguished? First, weld at the base layer, then weld the transition layer, and finally weld the overlay layer.
I know the sequence; it’s about checking the appearance of the weld. I’m not sure whether it’s the base layer or the transition layer... Does it have anything to do with color?