Abstract: Development of the domestic manufacturing technologies of the spiral and straight weld pipes for service of long-distance oil/gas pipelines is summarized, and tremendous promotion by China′s "West-East Gas Transportation Pipeline Project" of the said technologies elaborated; the development situation of large-sized straight weld pipe manufacturing technologies abroad and a comparison in the technologies between the domestic sector and its foreign counterpart are made, and then, the gap identified. At last, the development trend of domestic manufacturing technologies of the spiral and straight weld pipes for service of long-distance oil/gas pipelines is forecast.