Automatic Welding Manipulator for Circumferential & Longitudinal Seams, Welding for Pressure Vessels, Pipes and Tanks

The automatic welding manipulator, also widely known as a column and boom welding machine, is a specialized heavy-duty industrial welding system designed for longitudinal and circumferential seam welding of large cylindrical workpieces. It is commonly matched with pipe rotators to complete automatic welding of pressure vessels, steel pipes, storage tanks, and other large tubular products.

Manual welding of large tanks and pressure vessels faces many challenges: unstable weld quality, inconsistent bead formation, high labor intensity, low working efficiency, and strict dependence on skilled welders. This column boom manipulator delivers stable, repeatable automatic welding motion. It precisely controls the horizontal movement of the boom and vertical lifting of the column, keeping the welding torch at a constant position relative to the rotating workpiece. The system ensures uniform penetration, neat weld seams, and reliable mechanical performance for pressure-bearing equipment, helping manufacturers meet strict industry quality standards and greatly improve workshop productivity.

This welding manipulator is widely adopted in pressure vessel workshops, oil & gas pipe fabrication plants, chemical tank manufacturing, boiler production, and heavy steel structure factories. It can be paired with submerged arc welding, MIG/MAG welding, and other welding power sources to realize automatic welding for different material requirements.

The complete equipment set consists of a vertical column, telescopic boom, driving lifting mechanism, horizontal travelling mechanism, welding torch fine adjustment assembly, electrical control cabinet, drag chain protection system, and base platform. It typically works together with pipe turning rollers to form a complete tank automatic welding workstation.

The vertical column adopts a thickened welded steel structure with high rigidity and strong anti-deformation capacity under heavy load. The boom can extend horizontally and carry the welding head. The servo lifting system drives the boom up and down along the column to adjust the torch height according to the workpiece diameter. The horizontal drive controls the forward and backward movement of the boom to adapt to different workpiece radii.

The welding torch is equipped with a fine tuning mechanism for micro-adjustment in multiple directions to accurately align the welding seam. The control cabinet adopts a touch screen and digital control system. Operators can set welding speed, lifting speed, travel range, and other parameters on the screen. The system can store multiple sets of welding programs for quick switching between different tank and pipe specifications.

Protective drag chains are installed for cables and air pipes to avoid pulling damage during long-term reciprocating movement. Safety limit switches are fitted on lifting and travelling strokes to prevent over-travel accidents. The base is equipped with anti-collision warning strips for safe operation in factory workshops.

The mechanical structure maintains a fixed torch position during welding. Weld bead width, penetration, and forming are highly consistent, avoiding human errors from manual welding. It meets the strict inspection requirements of pressure vessels and boiler equipment.

Designed for cylindrical workpieces. Cooperated with turning rollers, it can complete both longitudinal straight seam welding and circular circumferential seam welding for tanks and large pipes.

Thick welded column and boom structure ensures low vibration during long-time continuous operation. No obvious deflection under rated load, guaranteeing welding precision for large workpieces.

Touch screen control panel supports parameter storage and recall. When switching between different tank sizes, operators can quickly call saved recipes to reduce setup time.

Can be matched with multiple welding power sources and turning rollers. Flexible configuration for different production needs, from medium batch to mass production of vessels and pipes.

Equipped with emergency stop button, travel limit sensors, and anti-collision warning marks. Multiple safety protections reduce equipment damage and operator risks in heavy industrial workshop environments.

Automated operation reduces manual intervention. Continuous welding greatly cuts working time compared with manual welding, lowering labor cost and shortening delivery cycles for tank and pressure vessel orders.

This automatic welding manipulator is widely used for manufacturing:

• Pressure vessels
• Industrial storage tanks
• Boiler barrels
• Large diameter steel pipes
• Oil and gas pipeline components
• Chemical equipment cylinders
• Other heavy cylindrical steel structures

It handles longitudinal seam welding on unfolded cylinder plates and circumferential seam welding between cylinder sections and end caps.

By adopting this column and boom welding manipulator, enterprises can reduce dependence on senior welders and stabilize batch product quality. The uniform welding quality reduces rework and scrap rate, which is critical for pressure vessel products with strict inspection standards.

Automated welding improves output capacity and shortens order lead time. The robust mechanical design delivers long service life and low maintenance cost. It is a reliable long-term investment for factories engaged in tank, pipe, and pressure vessel fabrication, helping enterprises gain stronger competitiveness in heavy industry markets.