Plasma–TIG Longitudinal Seam Welding Machine

Plasma–TIG Longitudinal Seam Welding Machine

The haibao robot P+T longitudinal seam welder combines plasma and TIG welding with a column-and-boom arrangement, cross-slide adjustment, rail travel and turning rolls. The reference delivery at Wuxi Huali Juneng addresses long shell seams in tank and pressure-vessel fabrication.

Equipment and application images

Plasma–TIG longitudinal seam welding system reference

Complete welding installation at Huali Juneng

Integrated welding power and control cabinet

Cross slide and P+T torch aligned with the shell seam

Welded stainless shell and turning-roll station

Close-up of the longitudinal weld profile

haibao robot · PRESSURE VESSEL PRODUCTION EQUIPMENT

Automatic Longitudinal Seam Welding for Stainless Steel Shells

Keep the seam in a controlled position

The turning rolls support the shell and bring its longitudinal joint to the required welding position. The cross slide aligns the torch, while controlled travel follows the seam. The column and boom provide the reach and height adjustment needed for the specified shell range.

Plasma penetration and TIG weld formation

In the described P+T process, the plasma stage provides penetration and TIG contributes to the finishing stage. One-sided welding with reverse-side root formation is possible within a validated joint window. Gap, mismatch, edge preparation and shielding conditions are established through welding trials.

Recipes and changeovers

The control package stores the settings for the approved material and joint combinations. Changing shell dimensions may also require support adjustment, fixture checks and alignment. Stored recipes improve repeatability but do not replace checking incoming parts against the qualified fit-up limits.

A process window, not one universal thickness claim

The source gives a configurable 3–20 mm material range and several seam lengths and roll capacities. The actual welding procedure, number of passes and need for a bevel depend on the material and joint. Factory and site trials define the agreed production window and inspection results.

Configuration reference

Process	Plasma arc welding + TIG; individual or combined configuration
Typical materials	304/316L stainless steel; other grades by process review
Thickness reference	3–20 mm; joint-specific procedure validation required
Seam length options	2,000 / 3,000 / 6,000 mm; custom lengths by review
Shell diameter reference	300–3,000 mm; larger configurations by review
Travel speed range	50–1,000 mm/min equipment range; welding speed set by procedure
Turning-roll options	5 / 10 / 20 t, selected for the complete supported load
Controls	PLC and touchscreen with stored process recipes
Reference power supply	380 V, 50 Hz; destination supply confirmed in the proposal

Discuss your application

Send material, thickness, shell diameter, seam length, joint drawing, inspection requirements and output target. We will review the welding route, support capacity and sample-weld plan.

haibao robot
Shao Yicheng · Key Account Project Director · International Welding Engineer (IWE)
Email: masterhyper@163.com
Phone / WhatsApp: +86 177 5158 3908
Office: +86 519 8837 0688

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