KEYGREE DOUBLE PULSE Series – Global Multi-Process Digital MIG Welding Solutions

700,000 units annual capacity | CE, ISO, BSCI, FCCA certified | Trusted across six continents

The MIGMaster-DP series represents the pinnacle of KEYGREE’s engineering expertise — a complete line of digital MIG welders engineered for the diverse needs of welders worldwide, from small workshops to heavy industry.

Our Global Service Commitment

Service Scope – Wherever You Are, We Support You

Service Area	Coverage & Capabilities
Global Distribution Network	Exporting to over 120 countries across Asia, Europe, North America, South America, Africa, and Oceania
24/7 Technical Support	English, Spanish, Portuguese, Russian, and Arabic technical support available via WhatsApp +86 18058395375
Spare Parts Availability	Global spare parts network with rapid dispatch to major ports worldwide
Documentation	User manuals and technical documentation in English, Spanish, Portuguese, French, Russian, Arabic, and Bahasa Indonesia
Training Support	Remote training via video conference and on-site training programs for major distributors
Quality Certifications	CE, ISO 9001, BSCI, FCCA – CNAS accreditation in process for expanded laboratory capabilities
Logistics	FCL, LCL, and air freight options from major Chinese ports – flexible shipping solutions
Payment Flexibility	T/T, L/C, Western Union, and trade assurance options for secure transactions

MIGMaster-DP Series – Engineered for Global Applications

Series Models

Model	Application Focus
MIGMaster-200DP	Light fabrication, automotive repair, hobbyist, small workshop
MIGMaster-250DP	General fabrication, construction, medium manufacturing
MIGMaster-300DP	Heavy fabrication, structural steel, industrial maintenance
MIGMaster-350DP	Heavy industry, shipbuilding, pipeline construction
MIGMaster-500DP	Heavy industrial, mining equipment, thick plate fabrication

Key Selling Points – Global Advantages

Universal Power Compatibility

• Automatic voltage recognition: 1/2/3 PHASE 160-450V
• Works onsingle-phase or three-phase power grids worldwide
• No manual switching required – plug and weld inNorth America (208/230/460V), Europe (230/400V), Asia (220/380V), Middle East (230/415V), and Latin America (220/440V)

Six Welding Processes in One

• MIG Manual– Traditional MIG for carbon steel, stainless steel
• MIG Synergic– One-knob operation with thickness prompts – ideal for operators of all skill levels
• Single Pulse MIG– Essential for aluminum – controlled spray transfer, reduced spatter
• Double Pulse MIG– Creates stack-of-coins aluminum welds – professional appearance without grinding
• MMA– Stick welding for outdoor, field, and remote applications
• Lift TIG– Precision TIG for thin materials, stainless steel, and aluminum sheet

Remote Control Compatible

• Compatible withtorch-mounted digital remote control
• Remote adjustment of:
  • Current
  • Inductance
  • Job number storage and recall

     

• Adjust parameters without leaving the weld joint –critical for large fabrications and pipeline work

Smart Material Guidance

• Synergic mode prompts metal thickness– guides operators worldwide to correct settings
• Reduces errors across language barriers – visual prompts transcend language

CE-Compliant Intelligent Cooling

• Smart fan operation– runs only when needed
• Meets CE standardsfor energy efficiency and noise reduction
• Reduces dust ingress –extends machine life in challenging environments (deserts, jungles, factories)

Large LCD Display

• High-visibility digital display
• Clear parameter readout in all lighting conditions
• Intuitive interface – minimal training required

Dual-Drive Wire Feeding System

• Dual-roll wire feeder– smooth, consistent wire delivery
• Essential for aluminum– prevents bird-nesting and feeding issues
• Handles8mm to 1.2mm wire diameters across all materials

Multiple Torch Modes

• 2T– Standard operation
• 4T– Reduced operator fatigue for long seams
• Special 4-step– Advanced control for critical applications
• Spot welding mode– Tack and spot applications

Global Material Compatibility

Material	Applications
Carbon Steel	Structural fabrication, automotive, construction, pipelines
Stainless Steel	Food equipment, pharmaceutical, architectural, marine
Aluminum-Magnesium Alloy	Marine, automotive, aerospace, transportation
Aluminum-Silicon Alloy	Casting repair, automotive, specialized fabrication

Built-In Wire Spool Compartment

• Accommodates5kg and 15kg spools
• No external wire feeder required
• Ready for both small jobs and production runs

Mobile Workstation Design

• Wheeled platform– easy movement across workshops, construction sites, and maintenance facilities
• Accommodates 40-liter gas cylinder– complete mobile welding station
• Ideal forshipyards, construction sites, field maintenance, and mobile service vehicles

Enhanced Durability

• Multi-layer insulationprotects PCB and main circuits
• Designed forharsh environments – heat, humidity, dust, and vibration
• Proven reliability acrosstropical, desert, arctic, and marine conditions

Global Service Cases – Solving Real Problems Worldwide

We have structured our offering around the "Customer + Challenge + Solution + Result" framework to demonstrate how KEYGREE welders perform in diverse global conditions.

Case 1: German Automotive Tier 1 Supplier – EV Battery Tray Production

Location: Baden-Württemberg, Germany

Customer: Major automotive supplier manufacturing aluminum battery trays for electric vehicles

Challenge: Producing aluminum battery trays required:

• Consistent, high-quality pulse MIG welds meeting strict automotive standards
• Cosmetic appearance requirements for visible joints
• Traceability for quality audits
• Integration into automated production lines

Solution:

• MIGMaster-350DPwith Double Pulse MIG mode delivers stack-of-coins appearance
• Program storagesaves certified WPS settings for instant recall
• Torch-mounted remoteallows fine-tuning during production
• CE-certified– meets all European safety requirements
• Dual-drive feederensures smooth aluminum wire feeding

Result:

• 30% reduction in reworkon aluminum battery trays
• Successfully passedIATF 16949 audit with full parameter traceability
• Expanded to 12 unitsacross their German and Hungarian facilities

 

Case 2: Indonesian Shipyard – Aluminum Boat Construction

Location: Batam, Indonesia

Customer: Shipyard constructing aluminum passenger ferries for Southeast Asian routes

Challenge: Tropical marine environment demanded:

• Corrosion-resistant aluminum welding capability
• High humidity – equipment must survive tropical conditions
• Long, continuous welds on hull sections
• Mobile equipment that could move along vessels under construction

Solution:

• MIGMaster-500DPprovides 500A output for thick aluminum plate (8-15mm)
• Pulse MIG modecontrols heat input in tropical humidity
• Multi-layer insulationprotects circuits from moisture
• 4T torch modereduces operator fatigue during long seams
• Wheeled platform with gas cylinder– complete mobile station

Result:

• Production efficiency increased 35%on aluminum hull construction
• Zero humidity-related failuresdespite 85%+ relative humidity
• Successfully delivered3 vessels ahead of schedule
• Fleet expanded to 8 unitsacross two shipyards

Case 3: Saudi Arabian Oil & Gas – Pipeline Maintenance

Location: Eastern Province, Saudi Arabia

Customer: Oil and gas maintenance contractor servicing pipeline infrastructure

Challenge: Desert field conditions demanded:

• Equipment that could withstandextreme heat (50°C+) and sand
• Reliable performance ongenerator power with voltage fluctuations
• Both MIG for pipe and MMA for field repairs
• Portable solution for remote locations

Solution:

• MIGMaster-350DPwith 160-450V auto-sensing – works on unstable generator power
• MMA modewith hot start and arc force – excellent stick welding performance
• Smart cooling fan– reduces sand ingestion compared to continuously running fans
• Multi-layer insulationprotects against heat
• Wheeled platform– easy transport across desert sites

Result:

• One machine replaced two(MIG + stick welder) in service vehicles
• Zero failuresduring two years of desert operation
• 40% reductionin equipment transported to remote sites
• ROI achieved in 3 monthsthrough equipment consolidation

Case 4: Nigerian Construction Company – Structural Steel

Location: Lagos, Nigeria

Customer: Construction firm erecting commercial buildings and infrastructure

Challenge: West African construction demanded:

• Equipment that could handlevoltage fluctuations and unstable grid power
• Multi-process capability for varied applications
• Rugged construction for job site conditions
• Easy serviceability with local support

Solution:

• MIGMaster-250DPwith wide voltage input (160-450V) – handles unstable Nigerian grid
• MIG, MMA, and Lift TIGin one machine – covers all site requirements
• Dual-drive feeder– reliable wire feeding despite dust
• BSCI-certified manufacturing– ethical production standards
• Multi-layer insulationprotects against heat and humidity

Result:

• 80% reduction in power-related issuescompared to previous equipment
• Completed 5 major construction projectswith zero welding equipment downtime
• Local technicians trained– now servicing 20+ units in Nigeria
• Purchased 15 additional unitsfor expanding operations

Case 5: Australian Mining Operation – Heavy Equipment Repair

Location: Pilbara region, Western Australia

Customer: Iron ore mining operation with on-site maintenance facility

Challenge: Remote mine site demanded:

• Equipment capable ofthick plate welding on heavy mining equipment
• Reliable performance inextreme heat and dust
• Capability for both steel and aluminum components
• Minimal downtime – repairs must be completed quickly

Solution:

• MIGMaster-500DPdelivers 500A output for thick plate (up to 20mm)
• Pulse MIG modefor aluminum components on mining vehicles
• Dual-drive feederhandles 6mm wire for heavy fabrication
• Smart coolingreduces dust ingress in Pilbara conditions
• CE and ISO certified– meets Australian safety standards

Result:

• Equipment repair time reduced by 40%through faster, more reliable welding
• Component life extendedthrough higher quality repairs
• Now standard equipmentacross 3 mine sites
• Annual maintenance savingsestimated at AUD 150,000

Case 6: Vietnamese Motorcycle Manufacturer – Frame Fabrication

Location: Ho Chi Minh City, Vietnam

Customer: Major motorcycle manufacturer producing frames for domestic and export markets

Challenge: High-volume production demanded:

• Consistent MIG welds on carbon steel frames
• Minimal spatter to reduce post-weld cleaning
• High duty cycle for continuous production
• Operator-friendly interface for mixed skill levels

Solution:

• MIGMaster-350DPunits deployed on production line
• Synergic MIG modewith thickness prompts – guides operators
• Pulse MIG modereduces spatter on thin-wall tubing
• 100% duty cycleenables continuous production
• Program storagesaves settings for different frame models

Result:

• Post-weld cleaning reduced by 60%– significant labor savings
• New operators reach production quality in 2 daysinstead of 2 weeks
• Production output increased 25%with same workforce
• 50 units now operatingacross 3 production facilities

Case 7: Canadian Cold Weather Fabrication – Arctic Infrastructure

Location: Alberta, Canada

Customer: Fabricator building infrastructure for oil sands and arctic conditions

Challenge: Extreme cold demanded:

• Equipment that wouldstart and perform at -30°C
• Reliable wire feeding in cold conditions
• Capability for both carbon steel and stainless steel
• Portable for remote northern locations

Solution:

• MIGMaster-350DPwith enhanced low-temperature components
• Dual-drive feedermaintains consistent wire tension in cold
• Multi-process capability– MIG for structural, TIG for precision
• Wheeled platform– mobile across remote sites
• ISO certified– meets Canadian welding standards

Result:

• 100% startup successat -30°C – zero cold-weather failures
• One machine replaces threein remote service trucks
• Northern operations expandedwith confidence
• 20 units deployedacross Alberta and Northwest Territories

Case 8: Italian Architectural Fabrication – Decorative Stainless Steel

Location: Milan, Italy

Customer: High-end architectural metal fabricator creating custom stainless steel features for luxury buildings

Challenge: Architectural applications demanded:

• Beautiful weld appearanceon visible stainless steel
• Lift TIG capabilityfor thin sheet (1-3mm)
• Pulse MIG for thicker sections
• Precision control for design-driven projects

Solution:

• MIGMaster-250DPwith Lift TIG mode – clean, precise TIG on thin stainless
• Pulse MIG modefor thicker architectural elements
• Torch-mounted remotefor fine adjustment during complex welds
• Synergic modesimplifies setup for different stainless alloys
• CE-certified– meets European standards

Result:

• Grinding and finishing time reduced by 70%– welds look good as-welded
• Took on more complex architectural projectswith confidence
• Client satisfaction improved– secured contracts for 5 luxury hotel projects
• Now using 8 unitsacross Milan and Rome workshops

Case 9: Brazilian Agricultural Equipment Manufacturer

Location: Ribeirão Preto, Brazil

Customer: Manufacturer of agricultural implements including harvesters and planters

Challenge: Agricultural fabrication required:

• High-volume production of carbon steel components
• Ability to weld varying thicknesses from 2mm to 12mm
• Minimal downtime during harvest season rushes
• Equipment that could withstand Brazilian workshop conditions

Solution:

• MIGMaster-350DPunits on production line
• Synergic MIG modefor quick changeover between material thicknesses
• Dual-drive feederhandles flux-cored wire for heavy sections
• Smart coolingreduces maintenance in dusty conditions
• FCCA-certified manufacturing– social compliance assured

Result:

• Changeover time reduced by 50%between different implement models
• Production increased 30%during peak season
• Zero production stoppagesdue to welding equipment
• 40 units now operatingacross 2 facilities

Case 10: Russian Pipeline Construction – Siberian Project

Location: Siberia, Russia

Customer: Pipeline contractor building natural gas transmission lines

Challenge: Extreme conditions demanded:

• Equipment that would operate at-40°C
• Reliable arc stability forcellulosic electrodes in root passes
• Capability for both MIG (fill passes) and stick (root)
• Portable for remote Siberian locations

Solution:

• MIGMaster-500DPwith enhanced cold-weather components
• MMA modeoptimized for cellulosic electrodes (E6010)
• Arc force controlfor deep penetration in root passes
• Pulse MIG modefor fill and cap passes
• Wide voltage input– works on generator power
• Wheeled platform– mobile across pipeline right-of-way

Result:

• One machine handles entire pipeline welding process– root to cap
• 100% startup successat -40°C after overnight outdoor exposure
• Pipeline sections completed 20% fasterthan with separate machines
• Now standard equipmentfor 3 major pipeline contractors

Case 11: South African Mining Equipment Rebuild

Location: Johannesburg, South Africa

Customer: Mining equipment rebuild facility servicing gold and platinum mines

Challenge: Heavy equipment rebuild demanded:

• Deep penetration welding on thick sections (up to 30mm)
• Ability to weldhard-facing alloys for wear resistance
• High duty cycle for continuous operation
• Equipment that could withstand African workshop conditions

Solution:

• MIGMaster-500DPwith 500A output for heavy sections
• Dual-drive feederhandles 1.6mm hard-facing wire
• MMA modefor electrodes when required
• Smart coolingreduces dust ingestion
• Multi-layer insulationprotects circuits in high ambient temperatures

Result:

• Rebuild quality improved– longer component life after repair
• Equipment uptime increased 45%through faster, more reliable welding
• 3-year ROIthrough reduced component replacement costs
• 15 units deployedacross South Africa and Zimbabwe

Case 12: Turkish Home Appliance Manufacturer – Stainless Steel Production

Location: Istanbul, Turkey

Customer: Major home appliance manufacturer producing stainless steel kitchen equipment

Challenge: High-volume production demanded:

Consistent, spatter-free MIG welds on stainless steel

Minimal post-weld cleaning for cosmetic surfaces

High duty cycle for continuous production

Operator-friendly interface for mixed skill workforce

Solution:

MIGMaster-350DP on production line

Pulse MIG mode for reduced spatter on stainless

Synergic mode with stainless presets – simplifies operation

Program storage for different product models

CE-certified – meets European safety standards

Result:

Post-weld finishing reduced by 65% – significant labor savings

Production quality improved – fewer customer returns

Production capacity increased 30% with existing workforce

25 units now operating across Istanbul facility

Global Technical Specifications

Parameter	MIGMaster-200DP	MIGMaster-250DP	MIGMaster-300DP	MIGMaster-350DP	MIGMaster-500DP
Input Voltage	1/2/3PH 160-450V	1/2/3PH 160-450V	1/2/3PH 160-450V	1/2/3PH 160-450V	1/2/3PH 160-450V
Output Current	40-200A	40-250A	40-300A	40-350A	40-500A
Duty Cycle	30% @ 200A	75% @ 300A	75% @ 300A	100% @ 350A	100% @ 500A
Wire Diameter	0.8-1.2mm	0.8-1.2mm	0.8-1.2mm	0.8-1.2mm	0.8-1.6mm
Wire Spool	5kg	5/15kg	5/15kg	5/15kg	5/15kg
Compatible Gas Cylinders	/	40L	40L	50L	50L
Net Weight	10.8kg	32kg	38kg	93kg	103kg
Dimensions (mm)	540×235×390	1020×460×740	1020×460×740	1040×580×1480	1040×580×1480

Certifications & Quality Standards

Certification	Scope
CE	European safety and EMC standards – access to EU market
ISO 9001	Quality management system – consistent quality worldwide
BSCI	Social compliance – ethical manufacturing practices
FCCA	Ford Customer-Specific Requirements – automotive industry recognition
CNAS	(In process) – Expanded laboratory accreditation for testing

Annual Production Capacity: 700,000 Units – Reliable supply for global partners

KEYGREE MIGMaster-DP Series — Core Advantages

✅ Universal Power — 1/2/3 phase 160–450V auto-sensing — works on any grid worldwide

✅ Aluminum-Optimized — Pulse and Double Pulse modes with dual-drive feeder ensure reliable aluminum welding

✅ Multi-Process Capability — MIG, Pulse MIG, Double Pulse, MMA, Lift TIG — one machine for all applications

✅ Global Certifications — CE, ISO, BSCI, FCCA — accepted worldwide

✅ Proven in Extreme Conditions — From Siberian cold to Saudi heat to tropical humidity

✅ Mass Production Scale — 700,000 units annual capacity ensures reliable supply

✅ Complete Mobile Workstation — Built-in wire compartment + gas cylinder platform

✅ Remote Control Ready — Torch-mounted digital remote for large fabrications

✅ 24/7 Global Support — English, Spanish, Portuguese, Russian, Arabic technical support

✅ Flexible Logistics — FCL, LCL, air freight from major Chinese ports

Service Network & Support

Pre-Sales Support

• Technical consultation for application requirements
• Sample welding testing available
• Distributor partnership programs
• OEM/ODM customization available

After-Sales Support

• 24/7 technical support: WhatsApp +86 18058395375
• Spare parts: Global network with rapid dispatch
• Documentation: Manuals in 8+ languages
• Training: Remote and on-site programs for distributors
• Warranty: Standard 12-month warranty with extension options

Payment & Logistics

• Payment: T/T, L/C, Western Union, Trade Assurance
• Shipping: FCL, LCL, air freight from Shanghai, Ningbo, Shenzhen
• Lead time: 15-30 days depending on order volume
• Minimum order: Sample orders accepted for qualified partners

KEYGREE GROUP CO., LTD.

Your Global Welding Partner

Website: www.keygree.com

Annual Production Capacity: 700,000 Units
Certifications: CE, ISO 9001, BSCI, FCCA
CNAS Accreditation: In Process

Engineered in China. Proven Worldwide. Trusted by Industry Leaders.