Composite overlay welding

Our independently developed and manufactured composite pipes are ideal for pipeline tubes with requirements for high corrosion resistance and wear resistance, especially high-sulfur oil and gas pipelines. Corrosion-resistant materials can be overlay welded on both the inner and outer surfaces of pipe fittings and pipelines, replacing conventional solid-material pipes to reduce construction costs. As an alternative to mechanically bonded composite pipes, they resolve corrosion-aggravating issues such as blistering and peeling of the composite layer.

OD range for large-diameter pipes: Outer diameter ranging from Φ150 mm to 600 mm, with a maximum length of 13 m.

ID range for small-diameter pipes: Inner diameter ranging from Φ40 mm to 100 mm, with a maximum length of 1.5 m.

Base Metal Welding Materials

Common base materials: 20# / X65 / X70 / X80 / 15CRMO / 12CR1MOV / Q235 / Q345 / 16MN / 316F22 / F65 / 8630 4130 / A105 / A182 F11

Common welding consumables: INCONEL 625/825/600, C276/Monel 400/310/316/309/2209, STL21, etc.

Technological advantages

1. Improved wear and corrosion resistance: Automatic wire preheating ensures that the wire reaches a certain temperature before entering the molten pool, significantly increasing the deposition rate by 4-6.0 KG/H (originally 2.75~4.5), and the dilution rate is less than or equal to 3% (generally greater than 5%), thus improving the alloy purity of the weld overlay.

2. Improved production efficiency: Dual-gun dual-tungsten electrode welding speed can reach 70~90 cm/min, welding time is reduced by 50-75%, and production efficiency is increased three times.

3. Reduced production costs: Automatic hot wire can precisely control the amount of metal filling, reducing the amount of welding wire used in test workpieces by 77%-80%, achieving a welding thickness of 1.5~3.5 mm, and reducing welding costs by 30-50%.

4. Solving end-face welding and environmental protection issues: It solves the problem of pipe welding connection, and at the same time, it adds dust collection and slag removal equipment to solve the environmental protection issues of the welding process.

Featured Products

Pipe overlay welding

Pipe fittings overlay welding

Flange overlay welding

Valve overlay welding

Non-standard parts overlay welding

Pipe overlay welding

Pipe fittings overlay welding

Flange overlay welding

Valve overlay welding

Non-standard parts overlay welding

Composite Overlay Welding

Our independently developed and manufactured composite pipes are ideal for pipeline tubes with requirements for high corrosion resistance and wear resistance, especially high-sulfur oil and gas pipelines. Corrosion-resistant materials can be overlay welded on both the inner and outer surfaces of pipe fittings and pipelines, replacing conventional solid-material pipes to reduce construction costs. As an alternative to mechanically bonded composite pipes, they resolve corrosion-aggravating issues such as blistering and peeling of the composite layer.

OD range for large-diameter pipes: Outer diameter ranging from Φ150 mm to 600 mm, with a maximum length of 13 m.

ID range for small-diameter pipes: Inner diameter ranging from Φ40 mm to 100 mm, with a maximum length of 1.5 m.

Base Metal Welding Materials

Common base materials: 20# / X65 / X70 / X80 / 15CRMO / 12CR1MOV / Q235 / Q345 / 16MN / 316F22 / F65 / 8630 4130 / A105 / A182 F11

Common welding consumables: INCONEL 625/825/600, C276/Monel 400/310/316/309/2209, STL21, etc.

Technological advantages

1. Improved wear and corrosion resistance: Automatic wire preheating ensures that the wire reaches a certain temperature before entering the molten pool, significantly increasing the deposition rate by 4-6.0 KG/H (originally 2.75~4.5), and the dilution rate is less than or equal to 3% (generally greater than 5%), thus improving the alloy purity of the weld overlay.

2. Improved production efficiency: Dual-gun dual-tungsten electrode welding speed can reach 70~90 cm/min, welding time is reduced by 50-75%, and production efficiency is increased three times.

3. Reduced production costs: Automatic hot wire can precisely control the amount of metal filling, reducing the amount of welding wire used in test workpieces by 77%-80%, achieving a welding thickness of 1.5~3.5 mm, and reducing welding costs by 30-50%.

4. Solving end-face welding and environmental protection issues: It solves the problem of pipe welding connection, and at the same time, it adds dust collection and slag removal equipment to solve the environmental protection issues of the welding process.