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Products: |
| The anti-eccentric-wearing two-way protective sucker rod collar is made up of common collar by spreading one anti-fret and antifriction coating and through special surface treatment process.Therefore£¬both the collar and the oil tube will be protected form abrasion. This product is of various dimensions and models¡£ It is made up of high-quality alloy steel 40cr and featured of such three functions as abrasion resistance£¬wear resistance and anti-attrition. |
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