Automated Large-Diameter Pipe Longitudinal Seam Welding Machine for Expansion Joint Manufacturing

• Customization: Available
• Cooling Way: Water Cooling
• Style: Vertical
• Frequency Range: High Frequency
• Electric Current: AC
• Work Form: One-Body
• Type: TIG Welder
• Welding Materials: Stainless Steel, Carbon Steel, Alloy Steel, etc.
• Welding Method: TIG
• Welding Plate Thickness: 0.4-2mm
• Effective Weld Length: 1500mm
• Applicable Wire Diameter: φ0.8-φ1.2
• Transport Package: Ply-Wooden Box
• Specification: customized
• Trademark: Comflex
• Origin: Jiangsu, China
• Production Capacity: 500 Sets/Year
• Package Size: 1000.00cm * 800.00cm * 600.00cm
• Package Gross Weight: 356.000kg

Product Description

Automated Large-Diameter Pipe Longitudinal Seam Welding Machine for Expansion Joint Manufacturing

Product Description

This equipment is mainly designed for the longitudinal seam welding of thin metal plates and thin-walled cylinders. It is widely used in industries such as HVAC, metal bellows and expansion joint manufacturing, pressure vessels, stainless steel products, chemical processing equipment, and various precision pipe fabrication fields.

The machine features a clean and modern appearance, with a structure that is both durable and practical, ensuring long-term stable performance in industrial environments.

Key Performance Features
*Easy Operation
User-friendly controls and intuitive interface allow operators to quickly master the system, improving overall production efficiency.
*Safe and Reliable
Built with high-quality components, stable clamping mechanisms, and multiple safety protections to ensure secure operation.
*High Welding Efficiency
Designed for continuous production, providing fast welding speeds and consistent seam quality for thin plates and cylindrical shells.
*Beautiful Weld Formation
Ensures smooth, uniform, and aesthetically pleasing weld seams with minimal deformation—ideal for products requiring high appearance quality.
*Durable Construction
Heavy-duty frame, precision guide systems, and long-lasting materials provide excellent durability and low maintenance requirements.

Specification

Serial number	project	unit	ZH-1500
1	Welding materials		Stainless steel, carbon steel, alloy steel, etc.
2	Welding method		TIG
3	Welding plate thickness	mm	0.4-2
4	Effective weld length	mm	1500
5	Welding speed	mm/min	150-1500
6	Working accuracy	mm/m	±0.1mm/m
7	Applicable cylinder diameter	mm	≥φ150 (φ100-150 requires additional mandrel)
8	Speed regulation mode		Frequency conversion speed regulation
9	Applicable wire diameter	mm	φ0.8-φ1.2

Details

Machine pictures

Applications

This automatic longitudinal seam welding machine is suitable for:

*Metal expansion joints / bellows production
*HVAC ducting and stainless-steel pipe manufacturing
*Thin-walled tank and cylinder fabrication
*Chemical, food, and pharmaceutical container welding
*Any application involving thin metal plate or tube longitudinal welding

Final Products

Advantages

1.Rigid steel frame, low deformation.
2.Adjustable airbag clamping for different workpieces.
3.Heat-treated mandrel with water cooling, stable welding.
4.High-precision linear guide ensures straight weld seam.
5.AC motor with inverter for stable speed control.
6.Welding gun adjustable in X/Y/Z directions.
7.PLC + touch screen control, easy operation and parameter storage.
Water cooling system ensures consistent welding quality.

Customers

Packing & Delivery

To ensure the safe delivery of the welding equipment, we provide professional export-grade packaging:

Standard Export PlyWood Case / PlyWood Crate
The machine is securely fixed inside a fumigation-free, reinforced plywood case to protect it from vibration, moisture, and impact during transportation.
Internal Protection
Key components are covered with anti-rust oil, protective film, and shock-absorbing materials to prevent corrosion and mechanical damage.
Customized Packaging
For oversized models or customer-specific requirements, custom crates or reinforced steel-frame packaging can be provided.

Company Profile

We are the professional manufacturer of all types of metal flexible metal hose and machinery, such as corrugated metal hose, square lock and interlock hose/ conduit with more than 25 years of experience. The hoses are widely used in many industries: gas hose, water hose ,chemical hose, etc..Annular and corrugated metal hose: ID8 till ID600 on different machine.

FAQ

Q: Why choose us for seam welding machine?
A: We are most professional manufacturer of hose making machine with more than 25 years of experience
 
Q: What size can you make?
A: Min diameter is 150mm
Q:What is the welding method?
A:TIG welding
Q:What is the effective welding length?
A:1500mm
 
We need to know following information to quote you correct machineries:
1.Size range you want to weld?
2.Wall thickness range?

3.welding length