HF ERW720 Large Diameter Carbon Steel Pipe Machine for Petroleum and Gas API Tube Mill
Product Details
ERW720 high frequency longitudinal welded pipe production line / pipe making machine / tube mill is designed to produce welded pipes of 355mm - 720mm in OD and 6.0mm - 22.0mm in wall thickness, as well as corresponding square and rectangular pipe.
Usage and Technology
API pipe mill is specialized for manufacturing straight welded pipe for petroleum and gas pipelines. Taking hot-rolled steel as raw material, it produce required pipes through cold roll forming and suitable welding methods like H.F. welding, submerged arc welding and so on. The whole production line adopts ‘ZTF’ forming technology.
Technical Flow
Scrolling up→ Uncoiling → Shear and Welding→ Spiral accumulator→ Forming → H.F. induction welding→ External burr removing→ Cooling → Sizing→ Flying saw → Run out table →Inspecting→ Packing→ Warehouse
Forming process
| Round pipe | Cold roll forming process | Good roller design |
| ZTF forming process | Save alt least 60% roller cost with electric control adjustment | |
| Square & rectangular tube | General round-to-square process | Stable forming process |
| Round-to-square with Turks head | Good pipe quality | |
| Process of directly square-to-square(DSS) | One set of roller can produce all tubes with electric control and automatic adjustment |
Equipment Advantages:
√ China's largest straight seam welded pipe production line
√ Apply to high strength steel and big thickness
√ Raw material can be steel coil and single plate
√ It can utilize ZTF forming technique
Product Parameter
| Product&yield | Round Pipe | 355mm-720mm Thickness:6.0mm-22.0mm |
| Length | 6m-12m Length Tolerance: ±3mm | |
| Production Speed | 20 m/min | |
| Production capacity | 180,000ton/year | |
| Consumption | Mill installed capacity | 1400 kw |
| Line Area | 400m(length) ×40m (width) | |
| worker | 6-8 workers | |
| Raw Material | Carbon steel coil & steel plate Q235B(ASTM GR·D,σs 230) & High-strength steel | |
Product Technique
Model List
| Model |
Round pipe mm |
Thickness mm |
Working spead m/min |
| ERW140 | Ф60-Ф140 | 2.0-5.0 | 60 |
| ERW165 | Ф76-Ф165 | 2.0-6.0 | 50 |
| ERW219 | Ф89-Ф219 | 2.0-8.0 | 50 |
| ERW273 | Ф114-Ф273 | 3.0-10.0 | 45 |
| ERW325 | Ф140-Ф325 | 4.0-12.7 | 40 |
| ERW377 | Ф165-Ф377 | 4.0-14.0 | 35 |
| ERW406 | Ф219-Ф406 | 6.0-16.0 | 30 |
| ERW508 | Ф273-Ф508 | 6.0-18.0 | 25 |
| ERW660 | Ф325-Ф660 | 6.0-20.0 | 20 |
| ERW720 | Ф355-Ф720 | 6.0-22.0 | 20 |
Note: We can design and manufacture pipe making machine according to customers' requirements.
Please feel free to contact me.
