Chengdu Xinwei Welding Technology Co., Ltd.
| Supply Ability | 5 sets/month |
| Application | Fuel Tank Welding Machine |
| Rated Capacity | 40 KVA to 200 KVA |
| power (kw) | 500 W |
| condition | New |
| Product Name | Resistance Aluminum Water Cooled Multi Point Spot Welder Semi Automatic for Fuel Tank |
| Power | 220V / 380V / 440V, Single Phase, 500W |
| rated capacity | 40w-200w |
| usage | Fuel Tank Welding Machine |
| Type | Projection Welder, Pneumatic Spot Weld |
| Primary Voltage | 220 V, 380 V, 440 V |
| warranty | 12 Months |
| Phase | Single Phase |
| rated duty cycle | 50% |
| weight (kg) | 600 |
| Duty Cycle | 50% |
| Delivery Time | 25-35working days |
| Weight | 600 kg |
| Feature | Aluminum Fuel Tank Welding Machine |
| After Warranty Service | Video technical support, Online support and Spare parts |
| After-sales Service Provided | Free spare parts, Field installation, commissioning and training |
| Welding Material | Alloy Metal Aluminum Stainless Steel |
| Dimensions | 2000*1000*2400 mm |
| Payment Terms | L/C,D/A,D/P,T/T |
| Function | Multi Point Spot Welding Machine |
| dimensions | 2000*1000*2400mm |
| Packaging Details | wooden box |
| Keyword | Standing Spot Welding Machine |
| Place of Origin | Sichuan, China |
| Brand Name | Xinwei |
| Certification | CE, RoHS, ISO |
View Detail Information
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Product Specification
| Supply Ability | 5 sets/month | Application | Fuel Tank Welding Machine |
| Rated Capacity | 40 KVA to 200 KVA | power (kw) | 500 W |
| condition | New | Product Name | Resistance Aluminum Water Cooled Multi Point Spot Welder Semi Automatic for Fuel Tank |
| Power | 220V / 380V / 440V, Single Phase, 500W | rated capacity | 40w-200w |
| usage | Fuel Tank Welding Machine | Type | Projection Welder, Pneumatic Spot Weld |
| Primary Voltage | 220 V, 380 V, 440 V | warranty | 12 Months |
| Phase | Single Phase | rated duty cycle | 50% |
| weight (kg) | 600 | Duty Cycle | 50% |
| Delivery Time | 25-35working days | Weight | 600 kg |
| Feature | Aluminum Fuel Tank Welding Machine | After Warranty Service | Video technical support, Online support and Spare parts |
| After-sales Service Provided | Free spare parts, Field installation, commissioning and training | Welding Material | Alloy Metal Aluminum Stainless Steel |
| Dimensions | 2000*1000*2400 mm | Payment Terms | L/C,D/A,D/P,T/T |
| Function | Multi Point Spot Welding Machine | dimensions | 2000*1000*2400mm |
| Packaging Details | wooden box | Keyword | Standing Spot Welding Machine |
| Place of Origin | Sichuan, China | Brand Name | Xinwei |
| Certification | CE, RoHS, ISO | ||
| High Light | aluminum water-cooled spot welder ，industrial resistance projection welder ，semi automatic fuel tank welder | ||
This semi-automatic resistance spot and projection welder is engineered for high-volume fuel tank production, delivering 7 simultaneous weld points in a single press cycle through a rigid annular electrode assembly. The machine integrates a low-impedance secondary circuit with generous transformer margins to minimize energy loss, while an internal forced water-cooling channel continuously removes heat from the electrode roots and contact surfaces to prevent annealing and surface oxidation.
Built on a high-stiffness frame that resists deformation under repeated synchronous pressurization, the equipment maintains long-term electrode alignment accuracy for consistent joint quality. Industrial-grade pneumatic components and multi-level electronic protections—covering overcurrent, overvoltage, and overheating—ensure dependable operation in continuous production environments, making it a practical choice for manufacturers of traditional and new-energy fuel tanks.
The upper and lower annular electrodes each feature 7 fixed protrusions formed as a single-piece structure, eliminating the risk of loose or displaced electrode tips after wear. This design delivers 7 welds simultaneously with high structural rigidity and extended service life.
A generously sized welding transformer with a soft copper strip secondary connection provides a low-impedance path to the electrode coils, reducing heat generation and electrical waste. This translates into lower operating costs and stable weld energy over long shifts.
Cooling channels run through the entire annular electrode ring, covering the weld point roots and contact surfaces. Continuous water flow removes accumulated heat, preventing electrode softening, oxidation, and material adhesion, which supports consistent weld quality.
The machine body uses a high-rigidity structural design that withstands the large reaction forces generated during synchronous pressurization. Long-term use without frame deformation preserves the alignment accuracy of the upper and lower electrodes.
The controller includes overcurrent, overvoltage, and overheating protection functions that automatically cut off output under abnormal conditions, safeguarding the transformer and power devices. Durable pneumatic components further enhance long-term reliability.
The annular electrode assembly is designed for rapid overall replacement, allowing operators to switch between different fuel tank specifications with minimal downtime and maintain high production throughput.
| Industry | Typical Workpiece | Welding Mode |
|---|---|---|
| Fuel Tank Manufacturing | Fuel tank shell with metal ring | Projection welding (7 points per cycle) |
| Automotive Components | Filling ports and mounting brackets | Multi-point spot welding |
| Alloy Metal Fabrication | Aluminum and stainless steel sheets | Resistance spot welding |
| New Energy Equipment | Battery housing and sealing rings | Annular projection welding |
The operator places the fuel tank shell on the lower electrode platform and positions the metal ring against the upper annular electrode. Upon activation, the upper and lower ring electrodes press synchronously, applying force across all 7 fixed convex points at once. A high-current, low-voltage pulse passes through the workpieces at each contact point, generating resistive heat that fuses the metal ring to the tank shell. The internal water-cooling circuit simultaneously extracts heat from the electrode roots, while the controller manages weld current and timing to produce consistent, sealed joints suitable for subsequent assembly.
| Parameter | Unit | DN-40 | DN-63 | D(T)N-80 | D(T)N-100 | D(T)N-125 | D(T)N-160 | D(T)N-200 |
|---|---|---|---|---|---|---|---|---|
| Rated power at 50% | KVA | 40 | 63 | 80 | 100 | 125 | 160 | 200 |
| Rated primary voltage | V | 380 | 380 | 380 | 380 | 380 | 380 | 380 |
| Secondary voltage | V | 5.2 | 6.7 | 7.9 | 8.3 | 8.6 | 9.1 | 10.6 |
| Rated frequency | HZ | 50/60 | 50/60 | 50/60 | 50/60 | 50/60 | 50/60 | 50/60 |
| Max. short circuit current | KA | 14 | 15 | 16 | 18 | 20 | 28 | 34 |
| Max. weld power | KVA | 62 | 86 | 170 | 280 | 300 | 330 | 410 |
| Throat | MM | 400 | 400 | 400 | 450 | 450 | 450 | 450 |
| Max. force at electrodes | N | 6000 | 6000 | 10000 | 10000 | 10000 | 12000 | 12000 |
| Working stroke | MM | 20 | 20 | 30 | 40 | 40 | 50 | 50 |
| Cooling water consumption 2.5bar | L/min | 6 | 6 | 8 | 8 | 8 | 10 | 10 |
| Electrodes tip | MM | Φ13*45 | Φ13*45 | Φ16*45 | Φ16*45 | Φ16*45 | Φ20*45 | Φ20*45 |
| Arms | MM | Φ50*150 | Φ50*150 | Φ80*220 | Φ80*220 | Φ80*220 | Φ80*220 | Φ80*220 |
| Projection clamping plate | MM | 125*125 | 125*125 | 200*200 | 200*200 | 200*200 | 200*200 | 200*200 |
| Max. welding capacity A3 steel | MM | 2.5+2.5 | 3+3 | 4+4 | 4.5+4.5 | 5+5 | 5+5 | 6+6 |
The machine is suitable for welding alloy metals, aluminum, and stainless steel, making it versatile for fuel tank shells and metal ring assemblies.
The annular electrode assembly contains 7 fixed protrusions on each ring, allowing 7 weld points to be formed simultaneously in a single press cycle.
Forced water cooling is integrated through the entire electrode ring. The recommended water consumption ranges from 6 to 10 L/min at 2.5 bar, depending on the model selected.
Yes, the annular electrode is designed for quick-change replacement. Our factory can customize electrode configurations to match different fuel tank specifications and production requirements.
We offer a 12-month warranty on core components, online video technical support, spare parts supply, and field installation with training. Our overseas technical teams are available in select regions.
Send us your workpiece drawings and production requirements. Our engineering team will evaluate your application, configure the optimal solution, and provide a detailed proposal with electrode design and automation integration options.
Send Drawing | Request Welding Test | Get Custom Solution
Company Details
Business Type:
Manufacturer
Year Established:
2003
Total Annual:
$35000000-$50000000
Employee Number:
70~95
Ecer Certification：
Verified Supplier
Precision Resistance Welding Solutions for Global Manufacturing Chengdu Xinwei Welding Technology Co., Ltd. is a high-tech enterprise specializing in the R&D, manufacturing, sales, and service of resistance welding equipment. We provide reliable, efficient, and customized welding solutions, fr... Precision Resistance Welding Solutions for Global Manufacturing Chengdu Xinwei Welding Technology Co., Ltd. is a high-tech enterprise specializing in the R&D, manufacturing, sales, and service of resistance welding equipment. We provide reliable, efficient, and customized welding solutions, fr...
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