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随着西气东输和陕京二线等国内高压、大口径长输输气管道的相继建设,对于国内高压大口径管道的管材选用有了新的认识。在陕京二线输气管道工程中,利用板卷,依靠国内钢管生产厂家来制作大口径螺旋管的方式,大大节省了工程投资。通过国内钢管厂家的预制实验和专家评审,Φ1016×17.5mm螺旋焊管得到了大量的运用,在工程设计中对焊管的运用范围也进行了严格的规定。
With the successive construction of domestic high-pressure and large-diameter long-distance gas transmission pipelines such as the West-East Gas Pipeline and the Second Shaanxi-Beijing Gas Pipeline, new understandings have been given to the selection of pipe materials for domestic high-pressure and large-diameter pipelines. In Shaanxi-Beijing second-line gas pipeline project, the use of coil, relying on the domestic steel pipe manufacturers to produce large-diameter spiral pipe way, which greatly saves the project investment. Through the prefabricated experiments and expert review of domestic steel pipe manufacturers, Φ1016 × 17.5mm spiral welded pipe has been widely used, and the scope of application of welded pipe in engineering design has also been strictly regulated.