Is this coupling joint good? Will it hold?

[kgnotq2]

I had a plumber connect slightly wider radiator with plastic pipes. I wanted to bend the pipe but he said this pipe wont bend.

So he just connected it . But i can see there is a lot of pressure on the coupling does this need to be redone? Can you bend this pipe?

 

[exedon2]

While not the best job (looks like that floor board has been chewed!) and almost certainly could have been done in copper with a bit more skill.
I doubt it will give you any problems otherwise every new build with speedfit fittings would be in trouble.

 

[gmartine]

A bit lazy, as above it'll probably be ok but if push fit in plastic was the only option he could or should of used a longer plastic tail which would allow it to bend and create less stress on the coupling or replacement elbow.