The sketch definitely helped.
I don't work in the field, I'm in the shop, but we do have some concrete panel's that have in-bed's set in them, ours are a different type.
Let me ask this, with the plate already set in the concrete, why can't they cut off the tab (B, I think it was labeled), grind the remnants off so now the imbed plate is flush and relatively flat, and instead of using the tab you cut off, can't you replace it with something else? , either a plate or angle, anything so that you won't have to deal w/ that ragged in- field torch cut. Or after they cut it off, again grind the imbed plate clean and flush, then "repair" the tab by welding it and re-establishing it to what it was supposed to look like from the start.
Basically what I'm trying to say is it appears your going to have to get to the point that they should have been delivered to you, but your going to have to get their the hard way, with some time and money.
I agree w/ you that the work in the field will definitely end up w/ a jagged cut, and that doesn't set itself up for a good fit-up later on.
Again, I don't work with this system myself, but I don't see any other way, maybe someone else can be of more help. Good Luck
if full pen is required just bevel the part and grind back side of root pass, weld at low temp and you have to wait for a few days after pour before welding, the moisture in the concrete will cause the concrete to explode. when you do weld then only put one maybe two passes in at a time as too much heat input will definatley affect concrete. as for jagged cutting, get some one who knows what they are doing with a torch! the coating is going to be destroyed no matter how you do it. also if they were supposed to be shipped seperate then what is the possibility of sending them back, or having local shop/guy build you new ones and backcharge. you did not mention how many you require and what your time frame is.
darren
p.s. as most of the field guys out there will tell you this is a minor problem and shop product always has to be reworked in the field for final application. just remember that whomever's fault it is is also who gets the bill.
you gotta burn to earn