What thread is used for sewing up mattresses?

Hi Azhar, There aren't many thread manufacturers and so I imagine that the mattress industry will be using the same threads from only a handful of suppliers.

As for prices, you should be contacting the suppliers direct and I'm sure they will be able to assist you better than I.

I would be grateful if you could mail me if you find out anything about mattress threads.

Thanks for your comment.

John.