Industrial MIG welding machine with double puls for aluminum fabrication
KeyGree offers a range of Double Pulse MIG welders designed for different workshop needs and power configurations. Below is a comparison of our two flagship models for aluminum work:

The Compact Powerhouse: MIGMASTER-300DP
The MIGMASTER-300DP is the ultimate all-in-one solution for garages, fabrication shops, and on-site work. Its standout feature is the digital display control torch, allowing welders to adjust amperage, voltage, and inductance directly at the workpiece, drastically improving efficiency. The intelligent synergy function simplifies setup by recommending optimal parameters based on selected material, thickness, and wire diameter (supporting wires for carbon steel, stainless, AlMg, and AlSi). With multiple process modes (MIG Synergy, Single/Double Pulse, MMA, Lift TIG) and robust protection features, it's a versatile, professional-grade machine built for reliability.
- For Aluminum Fabricators & Automotive Repair:Achieve clean, porosity-free welds on body panels, frames, and custom parts. The MIGMASTER-300DP's digital torch allows for quick adjustments in tight spaces.



The Industrial Workhorse: MIG-500DP-W
For high-volume production environments like automotive part manufacturing, shipbuilding, or structural fabrication, the MIG-500DP-W delivers uncompromising power and stability. Utilizing advanced full-bridge inverter soft-switch control technology and dual IGBT modules, it provides an exceptionally stable and efficient arc at high duty cycles. Its separated wire feeder system offers superior feed performance for longer distances and heavier wire spools (up to 15kg), making it perfect for large-scale aluminum welding projects. It is engineered for continuous, demanding industrial use.
The KeyGree Promise: Quality and Partnership
Our quality policy is simple yet uncompromising: "Quality is the cornerstone of KeyGree's survival and the reason for customers to choose KeyGree". This philosophy permeates our entire value chain, from R&D to manufacturing. We back our equipment with robust warranties and dedicated technical support, ensuring our partners succeed.
Ready to transform your aluminum fabrication capabilities?
Contact KeyGree today to discuss your specific needs, request detailed specifications, or locate your nearest distributor. Discover how our Double Pulse MIG welding technology can become your competitive advantage.

KeyGree Group Co., Ltd. is a wholly foreign-owned enterprise invested by British in 2009:
· Established: Founded in 2009 (UK investment).
· Scale & Capacity: 80,000m²+ facility producing 700,000+ welding units annually.
· Quality Assurance: Certified to CCC, CE, ISO9001:2015.
· Full-Spectrum Expertise: Vertically integrated from R&D and component manufacturing (transformers, heat sinks, PCBs) to final assembly of machines, torches, and laser systems.
· Complete Solutions: Offering both INDUSTRIAL-grade and household welding equipment lines.
Contact us
Schedule an On-Site Demo (Client-Funded): Contact our engineering team to arrange verification testing of MIG-300DP's zero-porosity welds on your battery tray designs.
Tel: +86 18058395375
Email: info@keygree.com












