Original
By certification 
MS Steel Pipe Hot Rolling Making Machines
Steel pipe hot rolling making machines are used online to mass produce seamless steel pipes and tubes. Main online machines include in piercer machine, skew rolling machine, sizing machine, straightening machine, and cooling bed. Hot rolling line is fit for mass-produce.
The finished products are widely used as structural tube, fluid tube, low and medium pressure boiler tube etc.
Steel Pipe Hot Rolling Process
Hot Rolling Machine Pipe Rolling Machines
Steel Pipe Making Machines MS Pipe Making Machines
Main Process of Hot Rolling Line
Billet Cutting – Inspection & Grinding – Billet Centering – Billet Heating –Pipe Piercing – Pipe Elongating – Pipe Sizing –
Cooling – Straightening – Grinding & Testing – Cutting to Length – Inspection & Marking – Packing & Weighing -- Storing
Main Parameter of MS Steel Pipe Hot Rolling Making Machines
| Item | Description | Type | |||
| RZJ80 | RZJ90 | RZJ114 | RZJ160 | ||
| 1 | Billet diameter (mm) | 60-110 | 65-130 | 80-180 | 140-230 |
| 2 | Billet length (m) | 2.0-3.0 | 1.6-2.4 | 1.5-2.6 | 1.7-3.0 |
| 3 | Shell diameter (mm) | 62-128 | 73-145 | 90-195 | 145-250 |
| 4 | Shell wall thickness (mm) | 5.0-26.0 | 5.0-22.0 | 5.0-25.0 | 10.0-40.0 |
| 5 | Shell length (m) | 3.5-7.5 | 3.5-7.5 | ≤7.0 | 5.0-9.0 |
| 6 | Hollow diameter (mm) | 55-122 | 68-138 | 87-175 | 140-230 |
| 7 | Hollow wall thickness (mm) | 4.5-25.0 | 4.5-20.0 | 4.5-23.0 | 8.0-38.0 |
| 8 | Hollow length (m) | 5.0-9.5 | 5.0-10.5 | ≤11.5 | 7.0-13.5 |
| 9 | Finished tube diameter (mm) | 51-114 | 57-133 | 76-168 | 133-219 |
| 10 | Finished tube wall thickness (mm) | 4.5-25.0 | 4.5-20.0 | 4.5-23.0 | 8.0-38.0 |
| 11 | Finished tube length (m) | ≤11.5 | ≤12.5 | ≤12.5 | ≤14.5 |
Factors Affecting Quality
1. Quality of billet;；
2. Quality of cutting;
3. Billet heating temperature, heating uniformity;
4. Precision of piercing machine, elongating machine, sizing machine, straightening machine;
5. Precision of quick-wear parts, rollers, guide plate, mandrel etc;
6. Process route;
7. Craft adjustment of machines;
8. Arrange of sizing mill；
9. Heat treatment equipment and heat treatment process;
10. Experience of operators.
