According to China's development of long-distance pipeline construction process, summed up the entire cellulose-based, mixed, compound next to the three manual techniques and active gas shielded welding wire, flux cored wire from under the protection of the two semi-automatic and automatic welding technology activities to flux-cored arc welding and automatic welding technology to the next process characteristics and long-distance pipeline construction in China of the situation, pointing out that the automatic active gas shielded arc welding and automatic welding flux cored wire will be the country next to the long-distance pipeline under the direction of the welding technology.

With oil and gas and petrochemical industries to East Gas Pipeline Project as a symbol of China's long-distance pipeline construction peak has arrived. More and more to long-distance large-diameter oil and gas pipelines, high-pressure transmission direction. Under the long-distance pipeline welding technology since the 20th century to 60 years since the introduction of China, after decades of development, now under the hand of a mature technology to welding, is popular semi-automatic gas shielded welding technology, automatic welding technology and lower gas The combination of the welding technology as a long distance pipeline welding technology trends, will be in the national long-distance pipeline construction to promote.

Keywords: Mig Welding Rod