Abstract: Standard IOGP S-616 as issued by the International Association of Oil & Gas Producers is prepared and gradually implemented by a number of oil and gas producers through out the world,and certainly will become the new scale and benchmark for the international competitiveness of the linepipe-making field. The background,the main contents and the main appendixes of standard IOGP S-616 are described. The explanation of the said linepipe standard as made here in the paper is aimed at reminding domestic steel pipe makers to closely follow the trend of the international standards associated with the linepipe,and help the counterparts to understand and benchmark the requirements by the first-front users so as to enable them to continuously enhance their manufacturing capacity,and get a good preparation for sustaining and further tapping the world linepipe market.