Current Situation and Prospects of Manufacturing and Equipment Technologies of Oil/Gas Linepipes

Presented in the paper is the information concerning the high grade oil/gas linepipe-making industry,covering the current situations of R & D of such pipes both at home and abroad,the domestic equipment technological level of high grade linepipes as well as the construction of domestic weld pipe manufacturing equipment information system. It is emphasized that although the domestic high grade linepipe R & D level is generally getting closer and closer to that of relevant advanced countries,big gaps still remain in terms of researches on stability,strain-based design and suitability of the linepipes,which requires more efforts to be made to speed up such researches. Moreover,to get the nation become one of the world steel pipe-making giants within a possible shortest time framework,related advanced equipment and technologies should be introduced from abroad for promoting the equipment improvement and upgrade in the field.