Longitudinal Welded Tube Mills
Our Tube Mills have a German design & incorporate concepts
which make them robust,
precise and user friendly. They require
minimum maintenance and are easy to operate.
Designed to meet the individual requirements of our customers, our Tube Mills comprise of the following parts:
- Fully mechanized entry line comprising of:
- Uncoiler
- Coil Opener
- Shear and End Welder
- Fully automatic Horizontal Accumulator
- Highly efficient and accurate double output reduction and distribution gear boxes for mill drive
- Forming Mill
- Welding mill with Solid State Welder
- Sizing Mill
- Fully automatic NC controlled Flying Cut-off (both Friction/Cold saw)
- Ergonomically designed Roll Out Table with two side ejection
Highlights
- They include a fully mechanized entry line with hydraulic Shear & End Welder and fully automatic
Horizontal Spiral Accumulator for totally stress-free strip accumulation.
- Highly efficient and accurate helical reduction & distribution gear boxes to drive the mill. This
reduces power consumption as compared to worm gear boxes.
- Robust 2, 3 and 4 roll type squeeze roll assemblies for a precise control of weld parameters and to
reduce the size of rolls to enhance the HF Welder efficiency.
Specifications
| Model |
Tube OD (mm) |
Wall Thickness (mm) |
Line Speed (mtr / minutes) |
| Min |
Max |
Min |
Max |
| RTM 32L |
9.53 | 31.75 |
0.3 | 0.8 |
100 |
| RTM 32 |
10.0 | 31.75 |
0.5 | 2.0 |
120 |
| RTM 50 |
12.0 | 50.8 |
0.5 | 2.5 |
120 |
| RTM 76L |
15.88 | 76.2 |
0.7 | 3.2 |
120 |
| RTM 76H |
15.88 | 76.2 |
0.9 | 4.5 |
120 |
| RTM 90 |
21.3 | 88.9 |
1.2 | 5.4 |
120 |
| RTM 100L |
25.0 | 114.3 |
1.2 | 5.0 |
120 |
| RTM 100H |
33.0 | 114.3 |
1.6 | 6.0 |
100 |
| RTM 127 |
38.1 | 127 |
1.6 | 6.0 |
100 |
| RTM 150 |
60.3 | 168.3 |
2.0 | 6.0 |
80 |
| RTM 200 |
88.9 | 219.1 |
3.0 | 8.2 |
60 |
Tube Mills for larger pipe sizes are also available.
Features
- They include a fully mechanized entry line with hydraulic Shear & End Welder and fully automatic
Horizontal Spiral Accumulator for totally stress-free strip accumulation.
- Highly efficient and accurate helical reduction & distribution gear boxes to drive the mill. This
reduces power consumption as compared to worm gear boxes.
- Robust 2, 3 and 4 roll type squeeze roll assemblies for a precise control of weld parameters and to
reduce the size of rolls to enhance the HF Welder efficiency.
- Fin roll type seam guide unit installed close to the squeeze roll to enable a precise control of
.V-angle.
- Special driven shaping stands used in sizing mill for precise and gradual formation of heavy hollow
sections.
- An NC Flying Friction/Cold Cut-off system is installed in all types of mills to provide an NC
programmable and accurate cutting operation, which is user friendly and maintenance free.
- Line speed up to 150 m/min.
- Quick change cassette type design.
- Higher range of t/d ratios.
- OD accuracy of tube up to ± 0.04mm.
- Length accuracy of tube up to ± 2.0mm.
- Burr-free cut ends with Cold Saw Cut-off.
- Special roll design to reduce cold working on tubes, which in turn reduces power consumption on
mill.
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