Find Phone number, Location Address and all other information of Construction Companies in Karachi Post Tension Services Pakistan (Pvt) Ltd. Karachi on Branches.pk, Pakistan’s Largest Branches Directory. You can contact them directly on Phone number +92-21-34372294, or you can visit their location in person, address location is: Suite No.106, West Office Wing, Park Towers, Block-5, Clifton, Karachi..