... 3. Welding Type: 1) Seamless Steel Pipe, 2) Seamed/Welded Steel Pipe: ERW Steel Pipe, Spiral Steel Pipe 4. Material: Carbon Steel: ASTM A106 Gr. B, ASTM A53, Gr. B, ASTM ... A105, ASTM A234 Line Pipe: API 5L Gr. B, X42, X52, X56, X60, X65, X70, X80 5. Standard: ASME/ANSI, ASTM, DIN, JIS, BS ...