What's the name of this type of beans, similar to French (green) beans but not really?

I used to live in Australia, where I always buy this specific type of beans for cooking. It looks almost exactly like common French beans (green beans), same length as well, but the texture is different - these beans are much denser and heavier, and while French beans feels somewhat empty and hollow inside, this particular bean in question is much denser and fuller. The seeds inside are bigger than French bean's seeds, which makes it crunchier than French beans.

Another distinguishing factor is that these beans have a wrinkly surface (akin to snake beans / long beans), as compared to French beans which have smooth surface. Anyone can help me identify this bean? Thanks!