
This is a direct square to square forming type square and rectangular tube mill production line. From the uncoiler to the palletizing and binding machine, the whole line is fully automatic. Direct square technology, no need change rollers to produce different pipe size within range, adjust by motor, save time and save cost.
LW1200(300x300mm) Direct Square to Square Forming Pipe MillThis is a direct square to square forming type square and rectangular tube mill production line. From the uncoiler to the palletizing and binding machine, the whole line is fully automatic.
SQUARE AND RECTANGULAR DIRECTLY FORMING MILL
This mill uses a direct forming section to produce square and rectangular tubing. The benefit is that it uses one set of tooling to produce every size in the mill's range. When equipped with automated controls, size changes are achieved in minutes simply by inputting the desired size into the control panel. The equipment does the rest. This mill runs at speeds up to 650 feet per minute for smaller sizes and 196 feet per minute for larger sizes. Its innovative design and ease of operation make it the most efficient square and rectangular ERW mill available today.
The square and rectangular welded tube mill machine adopts the combined mold, multi-point pre-bending and direct square forming process. It has the characteristics of no dismantling of the main shaft, no dismantling of the arch, rapid roll change and low load of the unit. Compared with the non-combined mold, it reduces the die roll cost and roll change time by 60%. The four corners of the produced square rectangular tube have uniform thickness and high strength.



Direct Square Tube Mill Line is mainly used to produce the square and rectangular tubes directly,from square to square or rectangular to rectangular directly. As a professional tube mill machine manufacturer, we offers high-end square tube mill production line with consistently high quality.
Our company is a leading manufacturer of steel tube making machine. We specialize in state-of-the-art engineering and design and our machines are built to the highest standards to ensure maximum efficiency and performance.Our steel tube direct machines are designed to beuser-friendlywith intuitive control systems and easy maintenance requirementsand they are quaranteed to provide reliable,long-lasting performance.Buy square pipe forming machine from AIS MACHINERY.We are your reliable square tube making machine supplier.Welcome to contact us for more information about the steel tube forming machine




Equipment | Quantity | Note |
Entry Section
▪Coil skid ▪Coil car ▪Uncoiler, Coil opener with hold down roll ▪Pinch roll with centering device (Seven roll Flattener) ▪ Automatic Shear & welder ▪Horizontal strip accumulator |
2No. 1No. 1No. 1No. 1No. 1No. | Supplier |
Mill section ▪Forming mill |
1set | Supplier |
Welding section ▪Seam guide roll stand, squeeze roll stand ▪Solid state H.F. induction welder GGp800KW ▪Outside bead scraping device ▪Water Cooling trough |
1No. 1No. 1No. 1No. | Supplier |
Sizing section ▪Sizing roll stand ▪Turk’s head stand |
1Set. 1Set | Supplier |
Exit section ▪Milling saw ▪Driven roller run out table ,Inspection table & Collectors |
1Set. 1No. | Supplier |
Finishing section ▪Straigtener machine ▪One head Chamfer machine ▪One head Hydro tester machine ▪Automatic package machine |
1Set. 1Set 1Set 1Set | online |
Spare
▪offline shaft system for round to round roller change ▪offline stands several for square to round roller change ▪additional rollers to produce 80X80 direct square
|
1Set 1Set 1Set |
Design of the proposed line is based on following specification:
▪Raw Material Specification
Material to be processed | Low Carbon steel & Galvanized steel, Q195-Q355 |
Material | δb≤500Mpa, δs≤345Mpa |
Coil OD | Max 2200mm |
Coil ID | 610mm(depend on customer order) |
Coil Weight | Max 30,000 kg |
Strip Width | Min 400mm, Max 1200mm |
Strip Thickness | Min 3.0 Max 12.0 mm |
▪ Production Range
Type of production | ▪Square and Rectangular Hollow Sections |
Square Hollow Section | Min 100x100mm, Max 300x300mm |
Rectangular Hollow Section | Min 80x120mm, Max 400x200mm |
Square Tube Thickness | Min 3.0mm, Max 12mm |
Tube Cut Length | Min 6 meter, Max 12meter |
Tube Standard | Dimensionally as per any relevant international standard |

{Steel Tape}→→ Double-head un-coiler →→Strip-head Cutter and welder→→
Spiral accumulator→→Forming section(Flattening unit +Main driving unit +Forming unit +Guide unit +squeeze roller)+ De-burr frame →→Cooling unit →→ Sizing unit and straightener →→Milling saw →→ Run-out table →→Straingtener machine →→Chamfer machine →→Hydro tester machine →→automatic package machine


Forming section | Universal roll stand horizontal roll stands vertical roll stands |
Horizontal roll Shaft material | 42CrMo, quenching |
Material of gear box | Cast steel |
Material of bevel gear | 20CrMnTi |
Forming Mill Motor | AC invertor motor, AC invertor motor, |

It is the mechanical equipment which used in continuously production, auto fixed ruler cutting steel pipes, is one of the important support device for weld pipe production line. It can cut pipes during static and motion status, can both cut round pipe and special pipe.
Max traveling speed of saw carriage: | Max 40m/min |
Controller: | Siemens simotion |
Driven motor | Servo Siemens |
Feeding motor | Servo Siemens |
TCT saw blade motor | Servo Siemens |
Rotation motor | Servo Siemens |
TCT saw blade | 2 |
Guide rail | Hiwin |
Rack and pinoin | YYC |
Clamp | By hydraulic, 3 sets |

We provides all equipment to tube mill Finishing section:
4. Chamfer and end facer machine
7. Painting and oil machine
8. Automatic bundle and package machine
9. Drilling machine

Leading Technology, Reliable Quality, Excellent Service!
Optimized Design, High quality material select!
Heat treatment process guarantee!
Spiral bevel gear, drum gear coupling and carburization.
Gear teeth quenching.
Driven system stable, efficient and wearable with lower noise.
High precision wear resisting and Long life of rollers.
All the machine Lathes, Key Grooves are positioned and Milled by CNC.



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