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Hangzhou Kunli Welding Materials Co., Ltd. – A high-tech enterprise with over 20 years of experience in R&D and manufacturing of high-performance aluminum alloy welding wires. Trusted by global leaders like CRRC and Maersk.

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20+

Years of Production Experience

200+

MT Monthly Capacity

30+

Countries Exported To

About Kunli Welding

Hangzhou Kunli Welding Materials Co., Ltd. is located in the industrial zone of Puyang Town, Xiaoshan District, Hangzhou, Zhejiang Province. We are a high-technology enterprise specializing in the research, development, and manufacturing of high-performance aluminum alloy welding wire and aluminum alloy wire.

With over 20 years of production experience, international advanced manufacturing equipment, and a strict quality control system, we have successfully replaced imported products in key industries and become a qualified supplier for China CRRC, Maersk, and other leading enterprises.

35+

Years R&D Experience

200+

R&D Partnerships

90%

Technical Operators

2500+

Tons Annual Capacity

Our Featured Products

High-performance aluminum welding wires engineered for strength, fluidity, and reliability. All products meet international standards including DB, CE, ABS, DNV, and CCS.

Aluminum MIG Welding Wire

High deposition rate, excellent arc stability, ideal for automated welding systems.

• Alloy: ER4043, ER5356, ER4943
• Diameter: 0.8–2.0mm
• Certifications: CE, ABS, DNV

Aluminum TIG Welding Wire

Smooth feeding, low spatter, perfect for precision welding in aerospace and automotive.

• Alloy: ER4043, ER5183, ER5556
• Diameter: 1.2–4.0mm
• Packaging: Spools, Straight Rods

ER4943 Aluminum Welding Wire

High strength, crack-resistant, excellent for repair and fabrication.

• Tensile Strength: ≥290 MPa
• Elongation: ≥18%
• Ideal for: Automotive frames

Aluminum Alloy Wire

Custom alloys for specialized applications in marine and transportation.

• Alloys: 5083, 6061, 7075
• Temper: O, H111, T6
• Custom lengths available

Aluminum Braided Wire

Flexible, lightweight conductor for grounding and power transmission.

• Stranding: 19–127 strands
• Cross-section: 10–240mm²
• Applications: Electrical panels

Custom Aluminum Alloy Solutions

Custom R&D Solutions

We develop wires based on your samples, drawings, or performance requirements.

• OEM/ODM supported
• Fast prototyping
• Full technical documentation

High-Purity Al Wire

High-Purity Aluminum Wire

99.99% pure aluminum for electronic and laboratory applications.

• Purity: 99.99% Al
• Diameter: 0.5–3.0mm
• Low oxide content

Marine-Grade Welding Wire

Marine-Grade Aluminum Wire

Corrosion-resistant alloys for shipbuilding and offshore platforms.

• Alloy: ER5183, ER5356
• Salt spray tested
• DNV & CCS certified

View All Products

Why Choose Kunli?

We combine advanced technology, rigorous quality control, and customer-focused service to deliver reliable aluminum welding solutions.

Guaranteed Quality

International certifications: DB, CE, ABS, DNV, CCS. Full in-house testing lab.

Fast Delivery

200+ MT monthly capacity. Professional export team ensures on-time shipment.

Technical Support

Welding engineers available for consultation. On-site support upon request.

Customization

Develop products based on your samples, drawings, or performance needs.

Our Application Fields

Our aluminum welding wires are trusted across critical industries worldwide.

Automotive

Used in chassis, frames, and body structures requiring high strength and weld integrity.

Refrigerated Containers

Corrosion-resistant wires for durable, leak-proof container construction.

Shipbuilding

Marine-grade alloys certified by DNV and CCS for hulls and superstructures.

Train Carriage

High-strength wires for lightweight, durable rail vehicle manufacturing.

Latest News & Insights

Stay updated with industry trends and technical developments in aluminum welding.

ER4943 vs Common Aluminum Wires

Dec 15, 2025

Why ER4943 Differs from Common Aluminum...

Aluminum Welding Wire ER4943 stands as a workable filler material for diverse fabrication and repair duties, uniting weld deposit strength with practical fluidity...

Aluminum Braided Wire Guide

Dec 12, 2025

What is Aluminum Braided Wire and Where...

Aluminum Braided Wire Manufacturers are central to supplying flexible, lightweight conductors for a wide range of power and grounding applications...

Design Flexibility

Dec 08, 2025

Can Aluminum Braided Wire Meet Your Design...

Aluminum Braided Wire has transformed from a niche alternative into a common and standard component in modern electrical design...

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