API 11B Sucker Rod Centralizers

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1. Introduction of sucker rod centralizer

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


2. Material

2.1. Plastic: UHMWPE (Ultra High Molecular Weight Polyethylene)

2.2. Rubber: Nitrile

2.3. Nylon: Nylon 6/6

2.4.. 42CrMo


3. Structure

3.1. Pure plastic

3.2. Steel frame, rubber inside and outside

3.3. Nylon6/6 roller and alloy steel body


4. Specification


For rod

For tubing

5/8” (15.88mm)

2-3/8”, 2-7/8”, 3-1/2”

3/4”(19.05mm)

7/8”(22.23mm)

1”(25.40mm)

1-1/8”(28.58mm)


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