Oil Field Chains are used for oil-field drilling and producing operations such as mud pump drives, engine compounds, tubular and casing draw works input, transmission drives, camshafts, low and high drum, rotary countershafts, and rotary tables. These chains are also used in mining, logging and ball mill applications. Safety and reliability is paramount for oil field chains. Only a few highly professional chain manufacturers can offer this product, OIC is one of them. Our chains are API SPEC 7F approved.