1. The main conveying system is with V belt which can make sure equal force , creditable and stable function .
2. There are airbag type clutch and hydraulic brake between belt pulley and driving shaft which can brake quickly and stop exactly during the urgency .
3. The precision of steel pipe is high enough to be manufactured thin-wall pipe with five-roller .
4. The rolling mill adopts edge feeding way removing the coreless stick comparing to the side feeding . The exact location of mandrel on the deformation zone and short rolling line not only suit for rolling long tube billet but also improve the roller’s efficiency .
5. Electric-control feeding and discharging way improve the working efficiency .
6. It is easy to change and maintain the roller .
7.Twin-wire feeding way realize the stable feeding.
8. To tighten with hydraulic mandrel lowers the labor strength .
9. The mechanical CAM type rotary feeding way is stable and reliable .
Name |
LD90 |
LD120 |
LD180 |
LD240 |
LD320 |
Shell OD.(mm) |
65-114 |
64-140 |
100-190 |
150-260 |
170-330 |
Shell WT.(mm) |
1.5-10 |
1.5-12 |
3-15 |
3-18 |
3-20 |
Max Shell Length(m) |
6 |
6 |
8 |
8 |
8 |
Finished Tube OD.(mm) |
60-108 |
60-133 |
90-180 |
140-250 |
160-320 |
Finished tube WT.(mm) |
1-8 |
1-10 |
2-13 |
2-16 |
2-18 |
Max Finished Tube Length(m) |
15 |
15 |
15 |
15 |
15 |
Rolling speed(times/min) |
40-80 |
40-70 |
20-60 |
20-50 |
15-45 |
Stroke length(mm) |
752.46 |
903.5 |
1206 |
1206 |
1506 |
Feeding length(mm) |
2.4-10.3 |
2-10 |
2.4-10.3 |
2.4-10.3 |
2-10 |
Turning Angel |
35° |
41°50’ |
42° |
42° |
42° |
Form of feeding and turning |
Cam |
Cam |
Cam |
Cam |
Cam |
Way of feeding and turning |
Single rotating and single feeding |
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Diameter of roll(mm) |
249,268,286 |
270,286,304 |
411,455 |
455,497,515 |
631,700 |
Length of connecting rod(mm) |
3000 |
3200 |
3600 |
3600 |
4500 |
Stroke length distance from tube center to gear center(mm) |
240 |
280 |
350 |
350 |
400 |
Power of main motor(Kw) |
90 |
160 |
250 |
280 |
400 |
Feeding way |
Feeding after stopping |
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Dimension(Lx Wx H)(m) |
40x4.6x2.5 |
48x6x2.5 |
52x6.4x3 |
52x6.4x3 |
55x7.4x4 |