Polycar 51 LRC — Compact Carriage with Very Low Radial Clearance for Thick-Wall Tubes
Country: · Model: Polycar 51 LRC
A compact carriage-type welding head for orbital TIG welding of thick-wall pipelines in tight spaces. LRC stands for Low Radial Clearance, that is a very small radial clearance around the pipe. The head was presented in October 2025, and its AVC and OSC axes are motorized.
- Process
- orbital TIG welding, AVC/OSC
- Purpose
- thick-wall pipelines in tight spaces, high duty cycle
Technical specifications
| Process | orbital TIG welding, AVC/OSC |
|---|---|
| Purpose | thick-wall pipelines in tight spaces, high duty cycle |
Specifications are taken from the manufacturer’s technical documentation. Updated .
Description
The carriage moves around the pipe along a guide ring and makes an orbital weld with a non-consumable electrode in several passes, repeating the welder's movements. The AVC axis holds the arc voltage, the OSC axis oscillates the torch, and together with the gas shielding of the weld this is needed for multi-pass welding of a thick wall. The head is designed to work with a high duty cycle. Typical industries for the carriage heads of this range cover pipelines of power plants, including nuclear ones, oil and gas and chemical facilities, boilers and heat exchange equipment, where the clearance around the pipe is limited by neighbouring pipes or structures. It is controlled by sources with AVC/OSC support, which for the Polycar range means P6 and the PC series. The diameter range, axis travel, wire feed speed and weight are not given in the catalogue, so they should be requested separately.
How to choose
A carriage with a small radial clearance is taken when an ordinary open head does not fit around the pipe. For control a P6 source (P6-3 CW or HW) or one from the PC series is needed, and others without AVC/OSC will not do. The diameter range and axis travel should be clarified before ordering. For quick changes of tube sizes in the workshop see MU IV.
Request a price and lead time
Polycar 51 LRC — Compact Carriage with Very Low Radial Clearance for Thick-Wall Tubes. We reply within one business day.
Or email office@usk.ua or call +38 (044) 339-50-20.
FAQ
What does LRC mean in the name Polycar 51 LRC?
Low Radial Clearance, a very small radial clearance. The head fits where there is little room around the pipe.
Which pipes is Polycar 51 LRC intended for?
For orbital TIG welding of thick-wall pipelines, in particular in tight zones and at a high duty cycle.
Which power sources control the head?
Sources with AVC/OSC support, which for the Polycar range means P6 and the PC series.
When was Polycar 51 LRC presented?
In October 2025. There are no catalogue technical data for this model yet.
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Need a price, lead time or replacement?
Send us a request and we will confirm the configuration, lead time and delivery terms. We reply by email.