Steel round hollow balls

steel round hollow balls
Dear people,
I started to live and work in Turkey and i am looking for an manufactured company in Turkey that can deliver me in turkey the steel round hollow balls.
in the size of 6 - 8 - 9 - 10 - 12 - 15 and 20 cm diameter.
Feel free to contact me on my emailadres.
So hopefly their is a company that do so.
Best regards and waiting for your answer.