On July 1st, the companytook the lead in completing the industrial trial production of OD559×31.8mmL485high-strain marine line pipe in the second workshop of JLSP. The performanceindicators met the requirements of the national project plan and relatedstandards. The trial production achieved the expected results, marking thesignificant technical progress of the national key research and developmentproject task "manufacturing technology of L485 high-strain pipeline steeland JCOE steel pipe" undertaken by CNPC BOHAI EQUIPMENT MANUFACTURINGCO.,LTD.