ASTM A139/A 139M covers five grades of electric-fusion(arc)-welded straight-seam or helical-seam steel pipe. LSAW steel pipe:Standard: ASTM A139, ASTM A252, JIS G3444 etc. Grades: Q215-345, Grade A-E, Grade 1-3 STK290-540 Standard: ASTM A139, ASTM A252, JIS G3444 etc. Grades: Q215-345, Grade A-E, Grade 1-3 STK290-540 Outside Diameter: Φ406mm-Φ1626mm (16″-64″) Wall […]