Yes. The correct Aker Leather Model 616 Dual Magazine Carrier for your P229 magazines is MPN:A616-BP-3.
These pouches accommodate a belt up to 1.75"
TP1 is for 1911 magazines
TP2 is for double stack mags such as Beretta or Glock
Either MPN: A616-TP-2 or MPN: A616-BP-2 should fit Sig P229 double stack 9mm magazines.