Hydraulic Fitting-Up Rotator for Pressure Vessels & Wind Towers | Qizhi, Nanjing, China

The Hydraulic Fitting-Up Rotator is used to correct misalignment between one shell and the next, and to set them up for fit-up before welding. It is used in pressure vessel and wind tower fabrication, where large cylindrical sections have to be lined up accurately before the joint between them is welded.

Each set of rotators has two hydraulic driving systems. They are used either to adjust the centre distance between two rollers, or to move the position of a single roller. The rotator has four rollers, and each can be positioned to line up the shell.

By using hydraulics to adjust the shells, the fitting-up gap and the welding position can be set precisely. Qizhi says this reduces the labour intensity of fit-up work, improves fit-up efficiency, and ensures fit-up quality.

Why Choose a Hydraulic Fitting-Up Rotator?

Large shells rarely line up perfectly when they are first placed together. Correcting this with jacks, wedges, and crane adjustments is slow and relies on skilled fitters. Hydraulic roller adjustment does it under control from the machine.

• Precise alignment. Roller positions are adjusted hydraulically to set the fit-up gap.
• Less labour. Fitters do less manual pushing, wedging, and hoisting.
• Faster fit-up. Alignment is adjusted directly on the rollers rather than by repositioning the shells with the crane.
• Better weld positioning. The welding position on the joint can be set accurately.
• Part of a complete set. Qizhi also makes conventional and self-aligning welding rotators and column and boom welding machines.

Machine Specifications

⚠ Not yet available. The page gives no numeric specifications. To complete this section, I need the following from Qizhi:

• Load capacity per set (and per roller)
• Range of shell diameters and lengths handled
• Roller diameter and width
• Rotation speed
• Hydraulic system pressure and power
• Roller adjustment range (centre distance and single roller travel)
• Control system
• Machine dimensions and weight
• Warranty and lead time

Rollers: four, with hydraulic adjustment
Hydraulic systems: two per set
Condition Available: New

Key Features

• Four-roller design with hydraulic adjustment
• Two hydraulic driving systems per set
• Adjusts the centre distance between two rollers, or the position of a single roller
• Precise control of fit-up gap and welding position
• Reduces labour and improves fit-up quality

Applications

• Fit-up of pressure vessel shells
• Wind tower section fit-up
• Aligning cylindrical shells before circumferential welding

Who This Machine Is For

• Pressure vessel and boiler fabricators
• Wind tower manufacturers
• Fabricators who want to reduce manual shell alignment work

Frequently Asked Questions

What does this machine do?
It corrects misalignment between cylindrical shells and holds them for fit-up, using hydraulically adjustable rollers.

How does the hydraulic adjustment work?
Each set has two hydraulic driving systems. They adjust the centre distance between two rollers, or move a single roller.

What size of vessel or tower section can it handle?
The page doesn't say. Please contact the supplier with your shell diameter, length, and weight.

How is it different from a normal welding rotator?
A conventional rotator turns the shell for welding. This one also uses hydraulic roller movement to correct misalignment and set the fit-up gap.

Does Qizhi make other rotators?
Yes, including adjustable and self-aligning welding rotators.

Is financing or staged payment available?
Yes. A deposit secures your order and begins production, with the remaining balance due only once your machine has been built, inspected, and is ready to ship.

Should I buy new or used?
This machine is available new, built to order.