High Precision Steel Tube Mill Line for Round Square Rectangular Pipes

This mill is designed for manufacturing round pipes (Φ12mm-Φ32mm) with thickness of 0.5mm-2.0mm from cold-rolled and hot-rolled coil strip. The process involves forming unclosed tubular blanks, welding them into tubes using high-frequency welding, cooling, sizing/shaping, and cutting to measured lengths.

• High precision: Level roller jumps 0.01, frame/slide clearance ≤0.02, frame vertical degree ≤0.05, frame parallel degree ≤0.1, pipe diameter/roundness error ≤0.08
• Japanese technology: Meets high accuracy requirements of international clients
• Precise adjustment: Worm gear and worm adjustment system for high precision control
• 3D adjustment: Scraping scar can be adjusted with ±20° rotation capability
• Turkish head design: Round-to-square conversion reduces mold weight with stable forming and uniform R angles
• Damping system: Nylon damping blocks reduce impact on shafts and bearings

• Scroll up
• Uncoil
• Flattening
• End Shear & Butt Welding
• Accumulator
• Forming
• High-frequency induction welding
• Removing external burr
• Cooling
• Sizing
• Cutting
• Checking & Collecting
• Accessing Warehouse

This high-frequency welded tube mill line produces round tubes (8.0-32.0mm diameter) with wall thickness of 0.4-1.6mm. Utilizing roll forming and high frequency induction heating, it processes steel strip into various shapes with reliable operation through advanced aperture technology, PLC control system, and digital speed-regulating unit.

Coil loading → Uncoiling → Strip joining → Accumulator → Forming → HF Welding → Bead Remover → Cooling → Sizing & straightening → Measuring roll → Flying saw cutting → Double dumps → Run out conveyor