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FITZ Growing Line

FITZ Growing Line

    Growing Line - FITZ Series

    Stable Speedy Shells Joining and Growing Process


    FITZ series shell Growing Line is used for three or more pipes/ shells assembly and welding job. FITZ Growing Line is equipped with two fit-up roller beds, which have four independent hydraulic height adjustment rollers, to ensure the assembly and welding job speedy with a high performance.


    A.  Designed and robustly built to withstand rugged work enviroments

  • B.  Fastest system to assemble 1+1 or 1+1+...+1 sections

  • C.  Four independent hydraulic adjusting roller to align the two sections with each other

    D.  Large range center distance to match diffrent diameter of workpiecec

    E.  European hydraulic station, Parker oil tube and Schneider elctrical control system

    F.  Ideal for:

        - Wind tower fabrication

        - Pressure vessels

        - Pipe assembly

    Configuration details

    FITZ Growing Line is complete with a group of 5 (five) rotators in two combinations:


    Fit-up section for fit-up job consist of:

    Rotator A & B: Hydraulically adjusted idle rotator which fixed on ground and has two hydraulic cylinders to adjust center distance of rollers separately. 

    Rotator C: supporting roll which has two “v” shaped idle rollers to allow shells to be transported longitudinally when other rollers are retracted down and Rotator c support pipes.

  • Growing section is for ‘growing job’ consist of two rotators.

  • Rotator D: Idler rotator- Rollers distance is adjustable by lead-screw positioning to handle different workpiece diameter and manual travel on rail.

    Rotator E: Power rotator - Rollers distance is adjusted by bolts positioning and motorized travel on rail.

    Scope of Delivery

    A.  1 Power section, 1 Idler roller bed

    B.   2 Fit up roller beds and hydrulic station

    C.  1 Hydraulic support v-roll

    D.  1 Electric control system

        1 Main control panel    

        2 Remote pendant

    Technical Paramter




Max  loading capacity

60 tons

100 tons

Rotator  A & B capacity

30 tons

30 tons

Rotator C (v-roll support) capacity

30 tons

50 tons

Rotator  D and E capacity

60 tons

100 tons

Workpiece diameter

Ø800- Ø4500 mm

Ø850- Ø5500 mm

Rotator  A & B roller center-distance adjusting

Hydraulic cylinder

Hydraulic cylinder

Rotartor  C height adjusting

Hydraulic cylinder

Hydraulic cylinder

Rotator  D roller center-distance adjusting

Motorized lead-screw

Motorized lead-screw

Rotator  E roller center-distance adjusting

Bolts  manual

Bolts manual

Rolling  speed

100-1000mm/min (VFD)

100-1000 mm/min (VFD)

Rolling  motor power

2  X 2.2 kw

2 X 3 kw

Roller    material

Polyurethane  (PU)

Polyurethane    (PU)

Hydraulic  control mode

5 each separatly

5 each separatly

Rotator  D horizontal moving speed

250-2500mm/min    (VFD)

250-2500mm/min    (VFD)

Rails  inner gauge



Growing line working follow

l Step One: Lay dwon the two shells on Rotator A & Rotator B, Rotator D & Rotator E by crane.

 image.png image.png


l Step Two:

Join the two shells by moving Roator E on rails;

Fit-up and align seam by adjusting rollers center distance hydraulic, then spot welding;

Full circular welding

 image.png image.png

 image.png image.png

l Step Three:

Jack-up the front end of finished two shells by operating Rotator C (V-roller);

Move the finished two shells to backside by operating Rotator E;



l Step Four:

Lay down the third shell on Rotator A, B by crane;

Repeat the same work from Step one to Step three till all shells are finished.


Wuxi OLIVET Machinery Equipment Co.,LTD.E-mail: sales@chinaolivet.cnTel: +86-510-8383 0908

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