ASTM A513-2007 electric-resistance-welded carbon and alloy DOM steel tube.
Steel grade/steel material:
1010, 1020, 1026.
Q195, Q215, Q235, Q345.
Size range:
Outer diameter: 6-350mm.
WT: 1-12.5mm.
L: max 12000 mm.
Characteristics:
Good concentricity.
Good outer diameter and inner diameter tolerance.
High precision.
Stable quality.
Smooth roughness.
DOM steel tubing production process:
Raw material → incoming inspection → cutting → heating → piercing → hammering → pickling → cold-drawing → heat-treatment → physical chemistry test → straightening → ends cutting → final inspection → bundling → storage.