Spring casing centralizers

1. Introduction of casing centralizer

The casing centralizers are used to protect sucker rod to reduce wearing.

2. Material

2.1. Super strength spring steel

2.2. ASTM A395 ductile iron ,or equivalent international series number.

2.3. Polyester centralizer

2.4. Aluminum alloy

3. Structure

3.1. One or double bow without welding

3.2. Rigid type

3.3. Roller type

4. Specification

4″×5-7/8″, 4-1/2″×6-1/8″, 5″×61/2″, 5-1/2″×8-1/2″, 7″×8-1/2″, 7-5/8″×9-1/2″ , 8-5/8″×10-5/8″, 9-5/8″×12-1/4″, 10-3/4″×14-3/4″, 13-3/8″×17-1/2″, 16″×20″, 20″×26″