From 1956, China's first long-distance pipeline ━ ━ Karamay, Dushanzi pipeline construction began, the transition from manual welding to the main semi-automatic welding with a 2002: machine tools, the WTO is a challenge but also opportunity for experts to increase research and development of CNC machine tools Accelerate the development of universal CNC machine tool manufacturing industry in China Talk on service competition milling and processing center in China market situation and outlook at home and abroad and development of technology lathe machining center direction of world production, demand and development trend of the development trend of domestic and foreign machine tool The world development trend of CNC machining technology and the development of CNC machine tools technology trends of modern high speed machining of status and development trend of the use of advanced manufacturing technology to enhance the level of automobile piston machining mold bottle caps and special thread on the hole CNC Turning CNC lathe thread cutting method analysis and application of screw worm grinding wheel dressing surface grinding precision parts of the new multi-step method of tracking the neck connecting rod crankshaft grinding.

 West-East Gas Pipeline Bureau, according to chief commander of Ma Hua, China's pipeline welding technology has reached world advanced level.

 Ma Hua said that China's pipeline through the manual on welding technology to welding, hand down welding, semi-automatic welding and automatic welding process. From 1956, China's first long-distance pipeline ━ ━ Karamay, Dushanzi pipeline construction began, the transition from manual welding to the semi-automatic welding mainly spent 40 years, and from semi-automatic welding automatic welding to the development of only 3 Years. West-East Gas Pipeline project based on welding with semi-automatic welding, automatic welding a wide range of applied technology, the China pipeline welding technology to achieve a qualitative leap, reached the international advanced level in the field of pipe welding.