Cold pilgering is a rolling process for many different materials, such as stainless steel, low-alloy steels, zircaloy, copper, and titanium alloys. The tubes produced stand out from the portfolio of tubes and pipes as they are formed by a special cold forming process. This reduces the diameter and wall thickness and, at the same time, achieves the closest outer diameter and wall-thickness tolerances. Cold pilgered tubes are used in the medical application, chemical, aviation, food, and automotive industries, as well as for OCTG, pure gas applications, and in refrigerators and heat exchangers (Inconel® and Incoloy®).

Customer challenges addressed

  • Produces high-quality seamless tubes
  • Enhances tube roundness and surface finish
  • Processes difficult materials effectively
  • Ensures precision and stability
  • Minimizes unplanned downtimes
  • Integrates digital solutions for efficiency
  • Vital for oil, gas, aerospace, automotive

Key features

KPW 390 - Most productive KPW of its size

Benefits: Highly precise Time advantage of approx. 3.5 min compared to a side loader for each bubble change Die change: well below 3 hours Reduced risk of roll stand breakage after operator error or in the event of improper rolling Features: Stroke rate: 65 strokes/min Weight of roll stand: 42t(more than a loaded European truck) Acceleration of roll stand: 3.5 g Longer caliber (ring rollers) Rear loader design Quick-release hydraulic overload protection system inside the mill stand

KPW 18 LC+ - Fastest KPW of its kind and size

Benefits: fastest KPW of its kind and size Features: Stroke rate: up to 350 strokes/min Capacity: 1.150 km/y Outer Diameter range: 5 – 45 mm Acceleration of roll stand: up to 26 g Lancaster continuous mass balance

KPW 290 L - Largest KPW of its kind

Benefits: Largest KPW of its kind Features: Highest outer diameter and wall thickness tolerances for CRA OCTG tube production Finish tube OD: 89 - 255mm Operates at up to 75 strokes per minute Condition monitoring for proactive maintenance Most flexible in finish tube size range Complete tool change within 3.5 hours

Continuous operation mode

Size
18
25
50
75
100
125
Strokes per minute (rpm)
350
320
200
170
130
110
Max. hollow diameter (mm)
25
38
64
89
115
133
Min. hollow diameter (mm)
9
12
25
38
47
67
Min. hollow diameter (mm)
18
30
48
64
80
115
Min. tube diameter (mm)
5
8
14
19
30
48
Ring die diameter (mm)
130
205
300
375
450
520
Stroke length (mm)
380
490
860
102
120
132
Pass length (mm)
270
370
680
810
980
1050
Max. feed range (mm)
5
8
15
25
24
24

Discontinuous operation mode

Size
125
180
210
240
290
330
390
Strokes per minute (rpm)
110
90
85
80
75
70
65
Max. hollow diameter (mm)
133
180
210
245
290
335
390
Min. hollow diameter (mm)
67
100
120
140
160
180
200
Max. tube diameter (mm)
115
150
180
210
255
300
300
Min. tube diameter (mm)
48
70
90
105
120
135
150
Ring die diameter (mm)
520
700
750
800
850
880
950
Stroke length (mm)
132
120
120
120
120
130
132
Pass length (mm)
1050
950
950
950
950
1050
1050
Max. rolling force (MN)
24
30
30
30
30
30
30
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L
KPW 290 L