Saigon Hinged Spiral Nail Stop Collar can be used in both upset and non-upset casing to provide maximum clearance during rotation. It has a groove in the middle into which a spiral nail can be driven for improved grip on the casing. The narrow band firmly grips the collar into position around the casing and when tested as per API 10D-2 Specifications they provide high holding force. The narrow band makes it most economical Stop Collar.
This Hinged Spiral Nail Stop Collar is hinged at two places 180 degrees apart and one spiral nail in each half is driven between collar and the casing
It tightens the Collar to the casing firmly
They can be latched on the casing pipe without having to be slipped on at the end of the casing pipe allowing easy installation
These are most effective where low annular clearance is encountered
Available in sizes 4" to 20"
Any special sizes or combination can available on request