Our mill capacity covers designing, manufacturing, repairing and after-sales service. The mill has established 35000 square meter workshop, equipped with 180 sets of all kinds of equipments and 500 staff, in total USD44 million investments. Our mill manufactured strictly according to the API quality requirements, and has acquired the certificates of API SPEC 5D, API SPEC 7, API SPEC 5CT API SPEC Q1, ISO 9001:2000, ISO/ TS 29001, actually in the most aspects, the finished products’ quality has exceed the common API requirements in a large degree.