165mm-325mm straight seam welded pipe mill(ERW mill): Speed:8-20(m/min) Thickness:5mm-16mm Coil weight:20tons Capacity:3000K
The introduction of ERW mill
The plate in certain which after slitting and stripping is unfolded and leveled. Then, they are sent into forming machine. Used the roller, the plate is bent into pipe state. The edge of the steel is melt by making use of the proximity effect and skin effect of high frequency current. Then, the plate is extruded and welded into the pipe by extruding roller. Straight seam welded pipe mill also is called ERW mill.
The forming style of straight seam welded pipe can be devided into roll forming,cage foming,flexible forming (or F.F.X forming), full auto flexible forming(F.F.X forming). The mill developed in our company adopts roll forming when having small diameter(Φ≤114) . The cage forming is adopted when having small DC thin wall (Φ≤165 δ≤6 ). Flexible forming is adopted when having middle diameter(Φ≤340). Full auto flexible forming is adopted when having large diameter.
According to the products functions, straight seam mills are devided into API model, national standard model.
API model mainly produces high level steel pipes, such as delivery pipe of petroleum and natural gas, oil well casing pipe and so on. The requirements for material and quality are very strict. The mill is equiped with section equipment and technological equipment, such as IF annealing air-cooled roll table, ultrasonic inspection, high pressure hydraulic pressure testing machine, drifter and so on.
National standard model mainly produces the steel pipe, such as water-gas pipe, structure pipe and so on.
The available types of products:
No | Model | Specification | Speed(m/min) | Thickness(mm) | Coil weight(ton) | Capacity(kw) | Area(m2) |
1 | ZFJZ-100 | Φ25~Φ114 | 30~60 | 3~8 | 15 | ~1100 | 18×200 |
2 | ZFJZ -160 | Φ60~Φ165 | 30~50 | 3~10 | 10 | ~1600 | 21×260 |
3 | ZFJZ -200 | Φ114~Φ219 | 20~40 | 4~14 | 15 | ~1800 | 21×260 |
4 | ZFJZ -300 | Φ165~Φ325 | 10~30 | 5~16 | 20 | ~3000 | 24×300 |
5 | ZFJZ -350 | Φ165~Φ355 | 8~25 | 5~16 | 20 | ~3500 | 24×300 |
6 | ZFJZ -400 | Φ219~Φ406 | 8~20 | 5~20 | 30 | ~4000 | 27×300 |
7 | ZFJZ -500 | Φ219~Φ508 | 8~20 | 5~20 | 30 | ~4500 | 27×300 |
8 | ZFJZ -600 | Φ219~Φ610 | 8~20 | 5~20 | 30 | ~5000 | 27×300 |
165mm-325mm straight seam welded pipe mill(ERW mill)
