ERW325 API high precision tube mill machine tube making machine for Oil and Gas
Forming and sizing units uses combination of FF forming and FFX forming to produce steel pipes through HF induction welding. Heating method uses HF induction or contact welding, i.e. steel pipe fed into the mill is formed into pipe profile by forming rolls. With skin effect and proximity effect of high frequency current, induced electricity is concentrated onto the bonding surface of the pipe profile fringe to heat it up quickly to welding temperature, and finishes pressure welding when pipe fringes squeezed together by squeezing roll. After normalizing, cooling, sizing and primary straightening, steel pipe of desired size is produced. Advantage of the line: More shared rolls, easy adjustment, high quality weld seam, sturdy machine frame, easy operation and maintenance.
API model mainly produces high level steel pipes, such as delivery pipe of petroleum and natural gas, oil well casing and so on. The requirements for material and quality are very strict. The mill is equipped with section equipment and technological equipment, such as IF annealing, air-cooled roll table, ultrasonic inspection, high pressure hydraulic pressure testing machine and so on.
Specifications:
1. Raw Material
| 1 | Mateairal applcaition | Hot rolled steel strips |
| 2 | Material grade | X42, X50, X60, X65, X70, J55, N80 |
| 3 | ID of the steel strips | Φ508-Φ610mm |
| 4 | OD of the steel strips | Φ800-Φ2000mm |
| 5 | Coiler weight | Max.3500kg |
2. Production Range:
| Round Pipe | 114 - 325mm | Thickness: 4.0-12.7mm |
3. H.F. Welder: GGP1000Kw Solid State High Frequency Welder
4. Line Spees: Max.30m/min
5. Tube Length: 6-12m
6. Cutting Accuracy: ±1mm
7. Electric installed capacity: appro. 2000KW
8. Size of whole line: about 120X12m
Line composition :
Hydraulic loading car
Hydraulic double end uncoiler
Head debender and straightener
shear and weld machine
Spiral accumulator
Egde milling machine
Forming and sizing unit
Hydraulic system
1000kW solid state high frequency
Electric control part and full line electric interlocking
Full line hydraulic system
PC milling saw
End cropper
Hydrostatic testing machine
Conveyor roller table and air cooling roller table
Inline weld seam annealing equipment KGPS-TH600KW
Eddy-current tester, off line flaw detector, steel sheet ultrasonic flaw detector
As an CE & ISO9001:2008 certified pipe making machine manufacturer and supplier in China. Based on our high quality, reliable performance and long using life, our machines exported to Turkey, Egypt, Morrcco, Kazakhstan, Uzbekistan, Tajikistan, Syria, Iran, Iraq, Mexico, Sri Lanka, Pakistan, Thailand, Vietnam, and other over 30 countries.
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