Stop collar is used to hold centralizers or cement baskets on any position of casing, which ensures the positions of centralizers or cement basket to meet the design. The stop collars are available in three types: knock-on type, Spiral nail type and Set screw type. The stop collars can be installed on any position on casing to limit the axial movement of centralizers and cement baskets.
Stop collar The integral structure is fastened to the casing with high-strength and high-friction screws with a sufficient fastening force, and the structure is particularly suitable for small gaps. Made of seamless steel tube, the smooth surface allows the centralizer to be used for rotation
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