Oil field chains

<p> The specification and size of Oil field chains are the same as the standard of short pitch precision roller chain for transmission, including single row and multi row standard series and heavy-duty series, mainly multi row, which are mostly used in harsh environment, heavy load, large impact load and high reliable continuous operation.<br> High quality materials and special processes are adopted, and the products have high wear resistance, fatigue resistance and high reliability.<br>Yoonad Chain has passed the product certification of API Spec 7F of American Petroleum Association.</p>