Steel Pipe Making Machine

SP25 tube mill manufacturing process

Time：2020-05-29 14:20

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 roundtube 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.
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
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.
Step 4: Forming Section Function: forming the tube mill process from strip Advantage: >Advanced forming technical >One-stage molding platform >Reliable quality gear box >Siemens Beide motor
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.
Step 6: Sizing Section Function: sizing the tube to precise size Advantage: >Advanced sizing technical >One-stage molding platform >Reliable quality gear box and Siemens Beide motor >High precision, low error of the pipe size
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.
Step 8: Run Out Table. Function: run out the pipe, packing the pipe for tube mill process Type: Automatic or manual

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