HG273 is used to produce round pipe 3" - 10" and square tube 70x70mm - 200x200mm.
I. Summary of pipe making machine, Pipe mill, ERW tube mill line, China welded pipe production line manufacturers
The mill is intended for manufacturing of round pipe of Φ89mm-Φ273mm with thickness of 4.0mm–12.0mm from cold-rolled and hot-rolled coil strip by means of unclosed tubular blank with its subsequent welding into tube, edge heating by means of solid state high-frequency welder, longitudinal seam welding in rolls of tube welding machine, cooling, further sizing or shaping and on-stream cutting of endless tube in measured lengths.
Finished product will be of round pipe, square and rectangle pipe.
II. The technical flow of the production line
{SteelTape}→→ Double-head un-coiler→→Five-roll Flattener →→Strip-head Cutter and welder→→Horizontal spiral accumulater →→Forming section(Flattening unit +Main driving unit +Forming unit +Guide unit +High frequency induction welding unit +squeeze roller)+ De-burr frame →→seam annealer→→
Cooling unit →→ Sizing unit and straightener →→Flying saw under computer-control →→ Run-out table
III. Basic conditions of pipe making machine, Pipe mill, ERW tube mill line, China welded pipe production line manufacturers:
a) Steel Pipe Specification
1. Round Pipe diameter: Φ89mm-Φ273mm
Pipe Thickness: 4.0– 12.0mm
2. Square and rectangle pipe: 70x70-200X200mm
Pipe Thickness: 4.0 – 12.0mm
3. Pipe Length: 6.0m – 12.0m
4. Length Tolerance: 0-6mm
b) SteelTape Specification
1. Material: Carbon steel (δb≤500Mpa, δs≤235Mpa)
2. Steel Tape: Inner diameter: Φ600-800mm
Outer diameter: Φmax=1800mm
Strip steel width: 280mm-860mm
Strip steel thickness: 4.0mm-12.0mm
The maximum weight: 15.0 tons
c) Electric installed capacity: appro. 1800KW
d) Size of the whole line: appro. 130X16m
e) Line Speed: 10-40m/min
Forming & sizing section
5.1 Forming mill gearbox, universal joint
5.1.1 Mill entry flattener by up-horizontal roll and below-horizontal roll, one positive five-roll flattener, one pair of feeding vertical roll.
5.1.2 Forming mill consists of:
- Driven stand: 12 sets (Horizontal)
- Driven stand shaft: Φ 180mm
- Material of shaft: 42CrMo
- Side roll stand: 9 sets(Vertical)
- Side roll stand shaft: Φ120mm
- Material of shaft: 40Cr
- Gear box & universal joint: 12 sets
- Material of gear box: cast steel
- Material of gear: 20CrMnTi
- Main motor: 185kW 2 sets
- Main redactor: 2 sets
- Horizontal roller frame with worm gear & shaft. adjust up and down at same time and level.
5.2 Sizing mill gear box, universal joint
5.2.1 Sizing mill consist of:
- Driven stand: 6 sets (Horizontal)
- Driven stand shaft: Φ 180mm
- Material of shaft: 42CrMo
- Side roll stand: 6 sets (Vertical)
- Side roll stand shaft: Φ 120mm
- Material of shaft: 40Cr
- Gear box & universal joint: 6 sets
- Material of gear box: cast steel
- Material of gear: 20CrMnTi
- Main motor: 200kW Model: Z4-280-21 1 set
- Main redactor: 1 set
- 2 sets single head Turkshead, with 4 rollers*2sets
- One speed testing roller with air cylinder for CNC flying saw
- Horizontal roller frame with worm gear & shaft. adjust up and down at same time and level.
