Steel Square Pipe Welding Line
Short Description:
Steel Round Pipe Welding Line
Composition
| 1. Decoiling | Unrolling the winded skelp. |
| 2. Butt welding | Connecting the both ends of skelp for the continuous production. |
| 3. Accumulator | Stacking the connected skelp to decrease the material preparation time. |
| 4. Forming | Passing skelp through the roll forming tool. |
| 5. Welding | Welding process by electric resistance. |
| 6. Cooling | Air and water cooling to uniformalize the heated organization after high frequency heat treatment process. |
| 7. Sizing | To accurate the out diameter of pipe. |
| 8. Cut-Off | Cutting to ordered dimension. |
| 9. Straightening | Passing through the correction gap for the straightness. |
| 10. End facing | Chamfering & beveling the cut side according customer`s order. |
| 11. Hydrostatic testing | Checking the water leak and crack. |
| 12. Packing | Packing by ordered. |
MODELS
| MODEL | Round pipe diameter range (mm) | Round pipe thickness range (mm) | Square pipe diameter range (mm) | Square pipe thickness range (mm) | Forming speed (m/min) |
| YY20 | Φ8–Φ20 | 0.5-1.2 | 10*10–20*20 | 0.5-1.0 | 20-100 |
| YY32 | Φ12–Φ32 | 0.6-2.0 | 10*10–25*25 | 0.6-1.8 | 20-100 |
| YY50 | Φ15–Φ50 | 0.8-3.0 | 15*15–40*40 | 0.8-2.5 | 20-80/120 |
| YY63 | Φ21–Φ63 | 0.8-3.5 | 15*15–50*50 | 0.8-3.0 | 20-80/120 |
| YY76 | Φ21–Φ76 | 1.0-4.0 | 20*20–60*60 | 1.0-3.5 | 20-80/120 |
| YY89 | Φ32–Φ89 | 1.5-4.5 | 25*25–70*70 | 1.5-4.0 | 20-70 |
| YY114 | Φ48–Φ114 | 1.5-5.0 | 40*40–90*90 | 1.5-4.5 | 20-60 |
| YY140 | Φ48–Φ140 | 1.5-5.5 | 40*40–110*110 | 1.5-5.0 | 20-60 |
| YY165 | Φ60–Φ165 | 2.0-6.0 | 50*50–130*130 | 2.0-5.5 | 10-45 |
| YY219 | Φ89–Φ219 | 3.0-8.0 | 70*70–180*180 | 3.0-7.0 | 10-35 |
| YY273 | Φ114–Φ273 | 5.0-10.0 | 100*100–200*200 | 4.0-8.0 | 10-35 |
| YY325 | Φ165–Φ325 | 6.0-12.0 | 120*120–250*250 | 6.0-10.0 | 10-30 |
| YY426 | Φ219–Φ426 | 8.0-14.0 | 150*150–300*300 | 8.0-12.0 | 10-30 |
| YY508 | Φ273–Φ508 | 10.0-16.0 | 200*200–400*400 | 10.0-16.0 | 10-20 |
| YY630 | Φ325–Φ630 | 12.0-20.0 | 250*250–500*500 | 12.0-20.0 | 10-20 |
Machine Picture
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