English
فارسی 
Rounded nose of KSA's Shoes protect the casing string from the impact associated with landing casing on bottom. In other hand, they direct casing away from ledges. Collars are safety tools to prevent of cement back flow.
Different Duplex and Differential-float types of Shoes and Collars and Guide shoes manufacture for regular and special customer offers Different types of KSA's Shoe and Collars are constructed from 5-1/2" to 20" sizes. KSA's Confirmed Shoes and Collars by NISOC are manufactured from X-56, N-80, P-110 and V-150 materials.
