FENGQI MACHINERY
Complete Tube Mill Solutions
ERW tube mills, API pipe lines and precision roll forming systems engineered for your products.
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FENGQI MACHINERY
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Industry News & Company News
What Is a Slitting and Levelling Line?
How slitting knives, levelling rolls and recoiling work together to improve coil utilization, accuracy and productivity.
Read article →Why the Weld Seam Wanders in ERW Tube Production
Causes and corrective actions for roll alignment, strip camber, vertical-roll condition and guide-roll setup.
Read article →ERW Overlap Welding: Causes and Solutions
A practical diagnosis of incoming strip, forming rolls, guides, squeeze rolls and line tension.
Read article →Common Inner and Outer Burr Problems in ERW Welding
How power, speed, squeeze pressure, impeder position and scarfing-tool condition affect burr quality.
Read article →How to Adjust ERW Welding Parameters
A field guide to welding speed, HF power, squeeze amount, vee angle and impeder position.
Read article →FFX Forming: Process Advantages
Flexible breakdown forming, servo adjustment, lower roll inventory and improved tube consistency.
Read article →Why Slitting Burrs Become Excessive
Knife wear, clearance, overlap, axial movement, incoming material and hold-down pressure.
Read article →How Axial Knife Movement Affects Slitting Quality
Burr variation, strip-width error, tearing, incomplete cuts and abnormal tool wear.
Read article →Company shipments
