219mm-610mm ERW mill

219mm-610mm ERW mill:
Coil diameter:219mm-610mm
Coil thickness:5mm-20mm
Coil weight:30tons
Capacity:5000KW
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 ia 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 seamwelded 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(m
2
)
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