Double Submerged Arc Welded pipe (DSAW) if cold formed from a single piece of steel plate by rolling or pressing. The longitudinal seam is welded both inside and outside using the submerged arc welding process. Each piece is often cold expanded to meet tight dimensional tolerance.
NAPSteel stocks DSAW pipe from oilfield approved mills in the size range from NPS 24” to NPS 48” in schedules of STD, XS, and S80. Specifications in stock include CSA Z245.1 and API 5L in grades from 241 (B) to 483 (X70). Custom sizes and specifications are also available with a quick delivery time.