Welded pipe production line

Product Description

I.Summary

The mill is intended for manufacturing of round pipe of Φ*9mm-Φ**9mm with thickness of 2.0mm–8.0mm 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, square or rectangular pipe.

The manufacturing process provides for the uses of coiled strip precut in required width sizes in slitting machine.

II.Basic conditions

1.Steel Pipe Specification 

1.1 Round Pipe diameter:           Φ**-Φ**9mm 

Pipe Thickness:                            2.0– 8.0mm

1.2 Square & Rectangle Pipe:    *0×*****0×**0mm

Pipe Thickness:                            2.**7.0mm

1.3 Pipe Length:                            6.0m**2.0m

1.4 Length Tolerance:                   **6mm

2.SteelTape Specification

2.1 Material: Low carbon steel and low alloy steel (σb≤**0MPa,σs≤**5MPa)

Inner diameter of coil:                   Φ******0mm

Outer diameter of coil:                 Φmax=***0mm

Strip steel width:                           ******0mm

Strip steel thickness:                    2.**8.0mm

The maximum weight:                  ≤*0T

3. Production speed: ****0m/min

4. Electric installed capacity: appro.***0 kW

III.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 →→Cooling unit →→ Sizing unit and straightener →→Flying saw under computer-control →→ Run-out table