Specification :

Freet gained the right to use the API logo in 2004. freetqd (at) gmail (dot) com for more details. This series products use high quality low-carbon alloy, forged by patented heating technique developed by our own staff, which ensures the overall mechanical properties by strictly controlling the forge quality and advanced heat-treatment process. Digital machining at rod end ensures the accuracy of threads and strength. The above techniques guarantee overall performance of the sucker rod.