165X6 Diameter High-Frequency Welded Pipe Mill Line

1.Φ165×6 high-frequency welded pipe mill line is designed to produce welded pipes of 60~Φ165mm in diameter and 1.2~6mm in wall thickness. Adopting the advantages of the equipment of the same kind at home and abroad, each element of the production line is designed with new ideas. The application of Germany pass technology, PLC automatic control system, and other technics guarantee that the production line works reliably and operates and maintains easily. Being the best inside the state, the production line can also rival the advanced ones in the world.

2.Main Specifications:
Pipe Diameter: Φ60~Φ165mm
Wall Thickness: 1.2~6.0mm
Pipe Length: 6~12m
To-length Accuracy: 0~6mm( STD)
Standards applied by product
GB/T13793-1992 Straight-seam electric welded pipe
GB/T3091-2001 Welded pipe used for transporting low-pressure fluid

Raw Material Conditions:
Low carbon steel and low alloy constructional steel
Mechanical Characteristics: σb≤500MPa, σs≤345MPa
Width of Strip: 220~530mm
Thickness of strip: 2.0~6.0mm
Inner Dia. of Coil: 508~610mm
Outer Dia. of Coil: 1300~1800mm
Weight of Coil: ≤7.5t

Forming Technics: F-F F-F forming, HF welding
Forming Speed: 12~50m/min
Specification of overhead crane:
Tonnage: 15 tons (charging), 5 tons (products hoisting and repairing)
Elevation : 8m
Equipment floor area::100mx12m


3 Technological Process:

Charging car fetching coil → Car moving to uncoiler → Car lifing coil→ Holding by the mandrel of uncoiler →End straightener holding on → Removing the packing band manually→End straightening →Leveling the head and tail ends→Shearing and butt welding (strip joining) →Strip torsion →Storing in accumulator →Strip torsion → Forming → HF welding →Removing (inner) outside burr →Water Cooling →Sizing →Rough straightening →Flying saw cutting →Conveyer transfitting →Table →Pipe into container