Stop Collar, Hinged / Slip-on // Casing Size 4 1/2"-30" Type Hinged Spiral Nail Hole Size Range 6"-36" Force Holding: API 10D-2

Crimson Spiral Nail Stop Collar uses two spiral locking pins which when driven in firmly lock the collar into position around the casing.

This Stop Collar can be used in both upset and non-upset casing provides maximum annular clearance.

They can be latched on to the casing pipe without having to be slipped on at the end of the casing pipe, thus allowing quick and easy installation.

Crimson Hinged bolted Stop Collar is Designed to latch on the casing pipe without having to be slipped on at the end of the casing pipe allowing quick and easy installation.

The friction grip type is hinged and incorporates a nut/bolt assembly which, when tightened, draws the stop collar into a friction grip around the circumference of the pipe.

A valued point is that the stop collar should always have a stronger holding force than starting force.

Slip on set-screw type is a one-piece stop collar. 

Crimson also offers a premium one-piece stop-collar, with set screws for superior holding capability.

The outside ends of these collar are generally tapered to a degree which helps to hold the centralizer and avoid the ends to hit the Bows / Vanes when the centralizers are placed over them.

Crimson Hinged Set Screw Stop Collars are hinged at two places 180 degrees apart.

The gripping force is applied by a single row of set screws holding the collar to the casing Firmly.

This Stop Collar can be latched on to the casing pipe without having to be slipped on at the end of the casing pipe, thus allowing easy installation. These Stop Collar undergo a special process of rust prevention before Painting.