ERW API Tube Mill, 127mm-508mm

Round, Square, Rectangular Tube

1 ERW76 Sizing section

ERW219 Forming section

ERW254 Sizing section

FF forming technology

Automatic stacking machine

This ERW API tube mill is designed for the production of API line pipes, petroleum casing pipes, and structural pipes with a diameter range of 273mm-508mm. The welding speed is 15~30m/min and the maximum output can reach 250,000T per year.

Production Procedures

Coil Loading → Uncoiling → Flattening/Leveling → Shearing & End Welding → Coil Accumulator → Forming → Welding → Inner & Outer Deburring → Annealing → Air & Water Cooling → Sizing & Straightening → Flying Saw Cutting → End Facing & Chamfering → Hydrostatic Testing → Ultrasonic Flaw Detection → Weighing & Measuring → Painting & Marking → Packaging → Warehouse Storage

Basic Technical Parameters


Raw Material Specifications

Steel grade:
Line pipe: A, B, X42, X46, X52, X56, X60, X65, X70, X80
Petroleum casing pipe: H40, J55, K55, N80
Structural pipe: Q215, Q235, Q345, 20#

Coil Outer Diameter: Ø1350mm~Ø2000mm
Coil Inner Diameter: Ø610~Ø762mm
Coil Weight: Max. 35T
Strip Width: 680mm~1600mm
Strip Thickness: 6mm~16mm

Finished Pipe Specifications
Technical Standards: API 5L API 5CT GB/T 3091 JIS G3452 JIS G3444 JIS G3445 ASTM A513 EN 10219
Pipe Outer Diameter: Ø 219mm~Ø508mm
Pipe Length: 6~20m
Welding Speed: 15~30m/min
Annual Output: 250,000 tons/year
4. Total Installed Capacity: Approx. 3,500 kW
Design Concepts

Improves serviceability and productivity Increase stability of the product quality Maximize output Lower equipment cost To satisfy small-batch production requirements of multiple products To improve the environment and safety during operation