If you know anything about torches these torches were made for the Railroad and are heavy duty.
These railroad torches are pretty nice!( you will not find any steel that you can't cut through!)
Pretty serious torches. Very heavy-duty and durable
Comes with adapter/fittings for regular hoses.
Rumor has it the railroad companies specifically had these torches designed to deter theft by making the connections incompatible with standard hoses. They do use standard 1500 series torch tips from Esab, which are heavy duty and still easy to find.
(in the pictures the Linde torch is beside a regular torch for comparison)