1. Pipeline installation
GA1 long-distance pipeline
a) Pipes conveying toxic, flammable and explosive gas medium with design pressure P>1.6MPa;
B) Pipes conveying toxic, explosive and flammable liquid medium with conveying distance (Note 1)≥ 200Km and common diameter DN≥ 300mm;
c) Conveyance of slurry medium with conveying distance ≥ 50Km and pipe nominal diameter DN ≥ 150mm.
GB1, suitable for gas pipeline
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