specification: Phi219-Phi1,420 spiral seam double-side submerged arc weld pipe usage: ... 2. Our company has 2 spiral seam weld pipe production lines and 2 straight seam weld pipe production lines with ... specification of the pipe is Φ219-Φ1,420 spiral seam double-side submerged arc weld pipe with wall thickness ... 5-16mm, and Φ245-Φ2,600 straight seam weld pipe with wall thickness 6-32mm.4. The ...