Puyang Zhongshi Group Co., Ltd.
Puyang Zhongshi Group Co., Ltd.
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API standard sucker rod centralizer
Sucker-rod centralizers also may be called paraffin scrapers or rod guides. They keep the rods and couplings away from the tubing to decrease wear. However, special mechanical paraffin scrapers have been developed
to also aid in keeping paraffin off the tubing and most of the sucker-rod length.
4.Application
| CASING SIZE | TUBING CENTRALIZER | TUBING CENTRALIZER | |
| NO. | OCTG ERW | (ID) | (OD) |
| 1 | 5.5" | 2-3/8"(60.325mm) | 110mm |
| 2 | 7" 6" | 2-3/8"(60.325mm) | 140mm |
| 3 | 7" 6" | 2-7/8"(73.025mm) | 140mm |
| 4 | 2-7/8"(73.025mm) | 114-115mm | |
| 5 | 7" | 3-1/2"(88.900mm) | 140mm |
| 6 | 0.83"(210.82mm) | 419.1mm | |
| 7 | 1.19"(302.26mm) | 419.1mm | |
| Remark |
