Spiral Submerged Arc Welded Pipes, Standard: API 5L Gr.B,---X-80, OD: ... -3048mm, Maximum wall thickness: 25.4 mm, Maximum Le Spiral Submerged Arc Welded Pipes, Standard: API 5L Gr.B,---X-80, OD ... name: Spiral Submerged Arc Welded steel Pipes (SSAW)2) Place of Origin: Liaoning, China 3) Material: API 5L line pipe: Gr.B,---X ... DNV ISO 9001, DNV ISO 14001, DNV OHSAS 18001 Spiral Submerged Arc Welded Pipes