flaw detector
5.The types of the detection equipments and apparatus are over 100,such as X-ray detector,r-ray detector,digital ultrasonic flaw detector,eddy current flaw detector,eddy current flaw detector,magnetic memory metal diagnostic instrument,acoustic emission testing an analyzing system,three-dimensional ultrasonic testing system,microcomuterhydraulic pressureniversal testing machine,metalloscope,portable direct-read spectrograph,have achieved the national advanced technology.
9.Abstract: The paper introduced the process, equipment and main technology parameters of high-speed wire mill of Baosteel, which is the one of the best advanced mills in the world, and described the TEKISUN reducing/sizing mill, the complete AC electrical driving, walking-beam furnace of high carbon steel, the flaw detector and diameter gauge, the close loop cooling control system, etc.
10.In this system, the oil pipe be locally magnetized through the longitudial and circumferential direction, the oil pipe be circumvolved by the electromotor, the detector will has a linear movement on the surface of the pipe, so it can realize the combined testing of horizontal flaw(cankerous pits and cankerous holes etc.) and vertical flaw (pole flaw and crack etc).

