400A 500A Water Cooled MIG Welding Torch Euro Connector MIG Gun For Heavy Duty Fabrication Description:
400A 500A Water Cooled MIG Welding Torch series, including the 400 and 500 models, is engineered for extreme industrial environments requiring a 100% duty cycle at high current outputs. The 500A model delivers a robust 500Amp (CO2) or 400Amp (MIX), while the 400A model provides a consistent 400Amp (CO2) or 350Amp (MIX), ensuring zero downtime during continuous heavy-duty welding. This professional water-cooled cooling system features a high-efficiency internal radiator and hose design that maintains optimal thermal management of the contact tip and nozzle, providing maximum arc stability and high-purity shielding for 0.8mm to 1.6mm industrial welding wires.
The 401 MIG torch is rated at 400A with CO₂ shielding gas and 350A with mixed gas at a 100% duty cycle, supporting Φ0.8–1.2mm welding wire. The 501 MIG torch delivers up to 500A with CO₂ and 450A with mixed gas at a 100% duty cycle, supporting Φ1.0–1.6mm welding wire for heavier welding applications.
Equipped with a standard Euro connector, the 400/500 MIG welding torches are compatible with most MIG/MAG welding machines and support a complete range of 400 500 consumables, including contact tips, gas nozzles, tip holders, gas diffusers, torch necks, and liners.
400A 500A Water Cooled MIG Welding Torch Specification:
| Parameter Item | MIG Torch 400 | MIG Torch 500 |
|---|---|---|
| Cooling Method | Water Cooled | Water Cooled |
| Duty Cycle (100%) | 400Amp CO₂, 350Amp MIX | 500Amp CO₂, 450Amp MIX |
| Wire Diameter | Φ0.8-1.2mm | Φ1.0-1.6mm |
400A 500A Water Cooled MIG Welding Torch Spare Parts List:

| Position | Order No. | Ref. No. | Description |
|---|---|---|---|
| 1 | A145.0085 | 145.0085 | Gas nozzle Φ16mm |
| 2 | A140.0442 | 140.0442 | Contact tip Φ1.2mm E-CU/M8X30 |
| 3 | A030.0190 | 030.0190 | White ceramic gas diffuser 401D-501D |
| 4 | A142.0022 | 142.0022 | Contact tip holder M8X25mm |
| 5.1 | A034.0001 | 034.0001 | Torch head 501D |
| 5.2 | A033.0001 | 033.0001 | Torch head 401D |
| 6 | ACV0890-01 | – | MIG handle Blue/Grip |
| 7 | A185.0031 | 185.0031 | Trigger |
| 8 | AFT0874 | – | Screw M3X10 |
| 9 | AHJ0021 | – | Joint for MIG handle |
| 10-1 | AHJ0852 | – | Housing ring/big/inside |
| 10-2 | AHJ0855 | – | Housing for plasma back box/big |
| 11 | AFT0822 | – | Spring for cable support |
| 12 | ACD0067 | – | Cable assembly 3m 401D-501D |
| 13 | AFT0722 | – | Clamp Φ9.0 |
| 14 | AFT0730 | – | Clamp Φ8.0 |
| 15 | A190.0099 | 190.0099 | Quick connector water Φ6/APH |
| 16 | AHJ0764 | – | Hose support for water-cooled rear box |
| 17 | AFTO063 | – | Screw M4X6 |
| 18 | AHJ0763 | – | Back box for water-cooled |
| 19 | AHJ0072 | – | Adaptor nut/Blue |
| 20 | A501.2156 | 501.2156 | Euro central adaptor body/water cooling |
| 21 | A501.0082 | 501.0082 | Liner nut |
| 22 | AKH0605 | – | Output water tube M5X8mm 0.8m red, EPDM |
| 23 | AHJ0306 | – | Plastic support for water cooling connector /Red |
| 24 | AHJ0308 | – | Plastic support for water cooling connector /Blue |
| 25 | AIC0226 | – | Brass terminal Φ3.0X45mm 0.35m |
| 26 | A126.0039 | 126.0039 | Teflon liner Φ3.0X4.5mm 3m Yellow |
| 27 | A122.0056 | 122.0056 | Steel liner Φ1.2-1.6mm 3m |
| 28 | ACG6000 | – | Spanner for MIG torches |
| 29 | A030.0019 | 030.0019 | Insulator 401D-501D |
Complete Torch
| Model Code | Full Specification |
|---|---|
| MIG400-03 | MIG 401D torch 3m euro adaptor/spring pins |
| MIG400-04 | MIG 401D torch 4m euro adaptor/spring pins |
| MIG400-05 | MIG 401D torch 5m euro adaptor/spring pins |
| MIG500-03 | MIG 501D torch 3m euro adaptor/spring pins |
| MIG500-04 | MIG 501D torch 4m euro adaptor/spring pins |
| MIG500-05 | MIG 501D torch 5m euro adaptor/spring pins |
About ALAND WELDING:
Founded in 2012, BEIJING ALAND WELDING is a professional manufacturer and global supplier of advanced welding equipment and solutions.
We integrate R&D, manufacturing, and international export, delivering high-performance welding machines designed to make welding more efficient, precise, and reliable.
Product Portfolio
Our comprehensive product range includes:
Pulse MIG/MAG Welding Machines
AC/DC TIG Welders
MMA (Stick) Welders
Multi-Function Welding Machines
Plasma Cutting Machines
Submerged Arc Welding Equipment
Laser Welding / Cutting / Cleaning Machines
Complete Welding Accessories and Welding Materials

If you are interested in our products or plan to import the 400A 500A Water Cooled MIG Welding Torch Euro Connector MIG Gun and other construction products, please feel free to contact us. Looking forward to long-term cooperation with you.