The invention relates to a pipeline for conveying
petroleum,
natural gas and the like and a manufacturing method thereof, and belongs to the field of special pipelines for conveying oil and gas. The oil and
gas pipeline provided by the invention has three scientific and technological innovations; two groups of strengthening annular bodies are welded on the large flanges at the two ends of the pipeline; a plurality of groups of strengthening
steel bar plates and overall strengthening steel circular
pipe fittings are combined and welded symmetrically, and the non-deformable
mechanical strength of the overall pipeline is increased. The
microcrystalline glass lining has the
advantage of 8-level Mohs strength, and the highest quality index can be performed comprehensively and creatively by adjusting the formula and the ratio of the
microcrystalline and amorphous glass lining enamel according to the requirements on the specific physicochemical performances of different structural parts of each oil and
gas pipeline engineering and each pipeline. By applying an openable and closeable extra long horizontal
electric heating furnace and an intelligent
temperature control instrument, and combining a new process of rotating while heating, the extra large and extra long integrated large
microcrystalline glass-lined pipeline which has high glass-lined layer quality, and is smooth in circulation, durable, non-corrosive, wear-resistant, high in
seismic resistance, and safe in operation is developed. The large microcrystalline glass-lined pipeline can comprehensively replace various current pipelines by virtue of comprehensive strong advantages.