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Steel Pipe Making Machine

  • SP25 tube mill manufacturing process
SP25 tube mill manufacturing process

SP25 tube mill manufacturing process

  • Pipe size:8-32mm
  • Pipe thickness:0.4-1.2mm
  • Productin speed:20-100m/min
  • Pipe material: carbon steel, Stainless steel
  • Product description: SP25 (diameters 8-32 mm) series tube manufacturing process and tube mill process is for 8-32 mm diameters round tube,25x25mm square tube,the thickness is 0.4-1.0mm based on the tube mill process,

SP25(8-32mm) tube mill manufacturing process is a series of tube mill process that builds longitudinal weld seam pipe with steel strips of certain width. It starts by uncoil and flatten the slit steel coils into steel strips. The flattened steel strips will be inserted into the forming machine and the rollers in the machine will bend the strip to a round pipe shape. The round tube manufacturing. then be sent into the weld box where the pipe is welded by a high frequency or solid state welder. The tube manufacturing process be formed to expected shape (round/ square/ rectangle etc) or size in a sizing machine. Finally the pipe will be cut to length and bundled.

1. Parameters of tube manufacturing

Model Unit SP16 SP25 SP28
Diameter of Welded Tubes mm 8-25 8-32 10-40
Size of Square Tube (Max.) mm 20x20 25x25 30x30
Size of Rectangle Tube (Max.) mm 15x25 20x30 20x40
Wall Thickness of Round Tube mm 0.3-1.0 0.4-1.3 0.5-1.5
Wall Thickness of Square  Tube mm 0.3-0.8 0.4-1.0 0.5-1.2
Wall Thickness of Rectangle Tube mm 0.3-0.8 0.4-1.0 0.5-1.2
Speed of Tube Welding m/min 20-100 20-100 20-90
Power of Major Motor KW 30 45 75
High Frequency Power KW 100 100 150

2. Process flow of tube manufacturing process

pipe making machine, pipe welding machine

Step 1: Uncoiler

Function: support rolled plate and strip tension for tube manufacturing, by the frame, main shaft, increases of drum, brake.

There are 3 types: pneumatic, hydraulic and manual.

decoiler uncoiler unwinding of erw pipe mill

Step 2: Shear & Butt-welding

Function: Shear the end of each strip coil, then welding them together, so that tube manufacturing process can be continue production.

2 Types: Automatic & Manual

head shear and welder for pipe making machine

Step 3: Strip Accumulator

Function: storage strip to keep continue production.

2 Types: Horizontal / Vertical

Advantage: Horizontal type can be larger storage. Vertical type is much cheap and small space occupied.

vertical accumulator horizontal accumulator

Step 4: Forming Section

Function: forming the tube mill process from strip

>Advanced forming technical
>One-stage molding platform
>Reliable quality gear box

>Siemens Beide motor

forming section of steel pipe mill

Step 5: High Frequency Welding

Function: Welding the pipe , different thickness & diameter, the power of the tube mill process welder

Our advantage: We choose the China best welder: Sanyi brand.

high frequency welding station for steel pipe machine

Step 6: Sizing Section

Function: sizing the tube to precise size

>Advanced sizing technical
>One-stage molding platform
>Reliable quality gear box and Siemens Beide motor

>High precision, low error of the pipe size

sizing parts for erw tube mill

Step 7: Flying saw / Cold Saw

Function: cutting the tube mill line tube to right length.

Fly saw: easy to operation, low investment.

Cold saw: no noise, no burr cutting precision and cross section.

fly saw cold saw and cutting saw

Step 8: Run Out Table.

Function: run out the pipe, packing the pipe for tube mill process

Type: Automatic or manual

run out table for tube making machine package

3. Applications of tube manufacturing

1. Oil & Gas Pipes 7. Wire and Cable Protection Pipe
2. Heating Pipe 8. Structural Support Steel Pipe
3. Low-pressure Process Pipeline 9. Industrial Steel Pipes
4. Low Pressure Fire Fighting Pipeline 10. Decoration Pipe
5. Sewage Pipes 11. Water Pipe
6. Steel Scaffolding Pipe 12. Building pipe

4. Photos of  tube mill process

tube line,black tube line,tube mill line,

SP16 Black tube mill line

5. Final product of tube mill process

Material:  carbon steel, galvanized steel pipe, mild steel, iron, black steel, ms steel, etc.

welding pipe welded tube

6. Whole series of tube mill process

Options of tube manufacturing process.

steel square pipe making machine,erw pipe making machine


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