Profile: Xi’an Metal & Mineral Import & Export Co., Ltd. deals with metal & mineral products. We supply hole drilling tools used for oil & gas industries. Our production range covers a wide & flexible assortment of oilfield drilling tools, such as drill collar, stabilizer, stabilizer forging, drilling reamer, drill pipe, HWDP and hole opener. Drill collar is a length of extra heavy wall drill rod or pipe connected to a drill string directly above the core barrel or bit. Our drilling reamer is used for all kinds of reaming stabilization in drilling operations, especially the function of stabilization in drilling of the abrasive formation