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Steel welded pipes for trunk gas pipelines, oil pipelines and oil products pipelines
Longitudinally electric-welded steel pipes 530-1020 mm in diameter with wall thickness up to 32 mm for trunk gas pipelines, oil pipelines and oil products pipelines
Longitudinal welded steel pipes with outer diameter 1020-1422 mm for mainland oil pipelines for working pressure up to 32.0 MPa
Longitudinal welded expanded steel pipes for oil pipelines with increased corrosion resistance and cold resistance.
Longitudinal welded steel pipes for mainland oil pipelines