Abstract: To meet the need for the Project of Jining Branch Natural Gas Pipe Line under the "West-to-East Natural Gas Transmission Pipe Line Project", The R & D of X80 straight SAW pipe (Ф 1016 mm×18.4 mm) is conducted by Julong Steel Tube Co., Ltd. Elaborated in the paper are trail manufacture of the said pipe and the test/measurement data thereof. The said data and relevant field feedback demonstrate that the newly-developed X80 straight SAW pipe is fully up to all the requirements of applicable product standard.