Transport pipelines form an essential component in the oil & gas industry. Also water supply in most country depends on this method of transportation.
Most pipelines are made of a high strength steel or Stainless Steel, including Duplex Stainless steel.
Arc welding processes for longitudinal (and spiral) seams are SAW (3 to 5 arcs) for steel pipes whereas GTAW and STT are examples of processes applied in stainless steel. Covered electrodes are regular used for site work.
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