Product description
High Speed Tube Mill Machine
The LT(152) Tube Mill Line integrates key processes including steel strip feeding, forming, high frequency (HF) welding, sizing, straightening, and cutting. The forming section gradually shapes the steel strip into a tubular profile, while the HF welding system produces a continuous longitudinal weld with stable welding quality. The sizing and straightening sections ensure accurate tube dimensions and consistent finished-product geometry.
Working Flow:
Raw material (steel coil) → hydraulic decoiler+loading cart →shearing and butt-welding à Horizontal accumulator → mill-forming → high-frequency welding → removing burrs outside of weld seam → cooling →sizing →Turkish head → cold cutting saw → roller conveyor → auto stacker
Each part technical parameter :
1. Hydraulic Decoiler+Loading Cart | ||
1.1 | Loading capacity | 10T |
1.2 | Steel coil I.D. | Φ508-Φ610mm |
1.3 | Steel coil O.D | Max Φ2000mm |
1.4 | Cantilever arm length | 500mm |
1.5 | Function | Motorized unwinding, hydraulic expansion |
1.6 | Remark | l Coupled with loading cart l Coupled with disc brake l Coupled with press arm |
2. Shear and Butt-welder | ||
2.1 | Function | l Cut off the defective part at the beginning and end of the steel strip and the defective part in the middle of the coil. l Cut the head and tail before butt welding, so that the butt welding joints are straight and aligned, which is beneficial to butt welding. |
2.2 | Structure type | Hydraulic shear + MIG welding |
2.3 | Shear thickness | ≤4.0mm |
2.4 | Maximum cutting width | 500mm |
4. Mill-forming machine | ||||
4.1 | Feeding guide | Leveling device | l 7-roller leveling, non-power l Shaft material: 40Cr l Adjust type: hand wheel rotation | |
Guide vertical rollers | 2 units, manual adjustment | |||
4.2 | Requirements | Round tube range: Φ59–Φ152mm, thickness: 1.5-4.0mm; Square tube range: 50×50mm-120×120mm (from round tube formed to be square) | ||
4.3 | Roller groups | Horizontal stands | Vertical stands | |
7 stations | 10 stations | |||
4.4 | Shaft dia. | Φ100mm | Φ60mm | |
4.5 | Shaft material | 42CrMo | 42CrMo | |
4.6 | Stands material | Forged steel stands | ||
4.7 | Adjust type | l Change rollers for different tube dimensions l Horizontal stands: gantry type integral frame, side-out roller change, worm gear synchronous adjustment. l Vertical stands: adopt split slider roller, screw adjustment, nut is copper. | ||
4.8 | Power transmission | From universal transmission joint to horizontal roll stands | ||
3. Horizontal Accumulator | ||
3.1 | Principle | Used to store steel strips, store the butted strips in accumulator, and supply materials to the punch unit. The accumulator works in a fixed-loop system, with the outside in and the inside out. |
3.2 | Accumulator diameter | Ф5M |
3.3 | Strip width | 100mm~480mm |
3.4 | Strip thickness | 1.5-4.0mm |
3.5 | Storage capacity | 8T |
3.6 | Feeding motor power | AC 22KW |
3.7 | Driven motor power | AC 30KW |
4. Mill-forming machine | ||||
4.1 | Feeding guide | Leveling device | l 7-roller leveling, non-power l Shaft material: 40Cr l Adjust type: hand wheel rotation | |
Guide vertical rollers | 2 units, manual adjustment | |||
4.2 | Requirements | Round tube range: Φ59–Φ152mm, thickness: 1.5-4.0mm; Square tube range: 50×50mm-120×120mm (from round tube formed to be square) | ||
4.3 | Roller groups | Horizontal stands | Vertical stands | |
7 stations | 10 stations | |||
4.4 | Shaft dia. | Φ100mm | Φ60mm | |
4.5 | Shaft material | 42CrMo | 42CrMo | |
4.6 | Stands material | Forged steel stands | ||
4.7 | Adjust type | l Change rollers for different tube dimensions l Horizontal stands: gantry type integral frame, side-out roller change, worm gear synchronous adjustment. l Vertical stands: adopt split slider roller, screw adjustment, nut is copper. | ||
4.8 | Power transmission | From universal transmission joint to horizontal roll stands
| ||
5. HF welding machine (solid state type) | ||
5.1 | Power | 400KW |
6. Guiding and extrude and scraper | ||
6.1 | Weld seam guide frame | Used to control the opening of the round tube billet after forming at the 12 o’clock position and ensure a certain opening angle according to the process requirements. |
6.2 | Extrusion roller frame | l Three-roller type, used to extrude and fuse the tube billets heated by high-frequency heating equipment together. l The side roll seat of the extrusion roll can be adjusted up and down, and the reduction motor is used for electric adjustment. l The rollers on both sides and the upper roller are pressed down as a whole, and the reduction motor is used to drive the worm gear and worm for adjustment. |
6.3 | Side extrusion roller ID. | Φ100mm |
6.4 | External burr removal device | l Used to cut off and scrape off the burr outside the pipe after welding and extrusion. l 2 units of scrapers, double blade scar shaving l Used alternately or at the same time, changing the saw without stopping the machine, which can rise and fall quickly, and can be adjusted back and forth and up and down. The adjustment is convenient, including burr winding device. |
6.5 | Polishing roller stand | l Used to grind the surface of deburring tube l A flat roller is used to polish the welded junction by extrusion. |
7. Cooling tank | ||
7.1 | Structure type | Combined sprinkler and overflow pool |
7.2 | Length | 3M |
8. Sizing machine | |||
8.1 | Requirements | Round tube range: Φ59–Φ152mm, thickness: 1.5-4.0mm; Square tube range: 50×50mm-120×120mm | |
8.2 | Roller groups | Horizontal stands | Vertical stands |
6 stations | 6 stations | ||
8.3 | Shaft dia. | Φ100mm | Φ60mm |
8.4 | Shaft material | 42CrMo | 42CrMo |
8.5 | Stands material | Forged steel stands | |
8.6 | Adjust type | Nut adjust the up roller | Copper nut with screw rod |
8.7 | Power transmission | From universal transmission joint to horizontal roll stands | |
8.8 | Driven gearbox | Type | Spiral bevel gear |
Material of gearbox | 20CrMnTi | ||
Material of gear shaft | 42Cr | ||
9. Turkish head | ||
9.1 | Structure | 4-rollers turkish head, up and down, left and right adjustment and rotation of 360°. |
9.2 | Shaft material | 40Cr |
9.3 | Straightening shaft diameter | Φ100mm |
9.4 | Quantity | Two units of Turkish heads |
9.5 | Function | Straighten the straightness of the steel pipe, guide the steel pipe to enter the flying saw correctly, and also adjust the diameter of the rectangular pipe. |
10 Cold cutting saw | ||
10.1 | Material | l CS，HR, CR l Tensile strength ≤615MPa l Yield strength ≤315MPa |
10.2 | Tube range | l Φ59-Φ152mm, T=1.5-4.0mm l 50×50mm-120×120mm, T=1.5-4.0mm |
10.3 | Driving motor | 22KW (servo motor, YASKAWA) |
10.4 | Sawing motor | 22KW (servo motor, YASKAWA) |
10.5 | Feeding motor | 4.4KW (servo motor, YASKAWA) |
10.6 | Saw blade | HSS 600mm |
10.7 | Guide rail/lead screw | Taiwan HIWIN |
10.8 | Rack & Gear | Taiwan YYC |
FAQ:
This tube mill is widely used for manufacturing structural steel tubes, construction pipes, furniture tubes, mechanical tubing, agricultural equipment, automotive components, and general industrial welded pipes.
The complete production line includes coil feeding, strip leveling, roll forming, high frequency welding, weld bead removal, cooling, sizing, straightening, flying cutting, and automatic tube collection.
Yes. The precision sizing section and high-quality roll tooling ensure excellent dimensional accuracy, roundness, and straightness for finished tubes.
The machine is designed to process steel strips with a material thickness range of 1.5 mm to 4.0 mm, making it suitable for medium and heavy-duty tube production.
