Xian Wansheng Material Resources Co. Ltd

We are offering bearings. Its main function is to support the mechanical body of revolution, to reduce the equipment in the mechanical load coefficient of friction in the process of transmission.

We are offering api high quality drill collar. 1. Material: non magnetic steel 2. Shape: it is the round pipe with smooth surface and thick wall, and the both ends are machined screw thread for connection. 3. Use: it is mainly used for the inspection in the process of petroleum drilling. 4. Standard: api spec 7-1 or syt5144 standard. 5. Inspection&test: when producing, traceability are maintained from the receipt of raw material to completion of final products, and serial numbers are die-stamped on each workpiece body. During each manufacturing process, inspection and test are performed. 6. Magnetic permeability(mps=1×1054∏am) 1). Average: ur. 2). Magnetic field gradient: δb≤0.05μt.