Carrier armour manufacturer?

[Lynn Eades]

Richard, Rob's post states the use of Austenitic rods. My understanding is that this type of stainless steel contains both nickel and chromium. To my simple un educated mind that is stainless.
I went to a chaps place some years back and he (along with a complete running Dagenham built AOP carrier) had the remains of another AOP carrier. It had been part of a sea wall. All he had was the spider web like welds of a silvery material that I would call stainless steel.
I could easily recognise the (some what collapsed) shape of the carrier welds.
Other Kiwis will know who I am talking about.

As an aside there were 79 of these Ford of Dagenham built Armoured O.P MkIII w (welded hull) carriers that came to N.Z. Later, 40 went to Tonga. I don't know if any of them returned. allowing for two other hulls we can account for 5 of them from that batch built in mid 1941.
What ever the welds are, I could not cut it with the gas but it certainly came away nicely with arc air gouging.