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WD600 600A Diesel Engine Driven Arc Welder with 36Kw Prime Power 790Kg Net Weight and 70L Fuel Capacity

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GENWELD LWG600A Pipeline Welding Machine with 4-Cylinder Air-Cooled Engine and AC230V/4Kw Generator Output for Robust Performance

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350A Diesel Multi-Process Digital Welding Generator Highly Adaptable to High-Intensity Welding in Outdoor Infrastructure

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500A Diesel Welding Generator with 20kW/400V and 7kW/230V Auxiliary Power for Pipeline Construction

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GENWELD Portable 7kW Silent Gasoline Generator Set with 4 Wheels and 65dB Low Noise Level

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800A Oil / Gas Pipeline Welding Generator With AC 40kW Auxiliary Power Output

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GENWELD LWC-270/350/500/630  Gas shielded welder

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3.6kW AC 150A Portable Welder Generator IP23 With Gasoline Fuel

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ABOUT US

Chongqing Lianwai Technology Co., Ltd.

CHONGQING LIANWAI TECHNOLOGY CO., LTD. Co., is a professional manufacturer and exporter of Welders, Generator sets, Motor tricycles, Tillers, etc.

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Why
Choose Us

Technology in sync with industry leaders

Intelligent and easy to operate: Digital temperature control, one-click switching for multiple processes, precise parameters, and more stable welding results; High-load capability: Diesel power + 60% duty cycle, capable of handling high-intensity continuous welding; Useful anywhere: Lightweight and easy to relocate, IP23 protection, ±10℃ start-up, handles complex working conditions; Cost-saving and versatile: Built-in 4kW power supply saves equipment, saving 0.8L of fuel per hour and reducing costs; Durable and maintenance-free: Imported core components + 5000 hours of trouble-free operation, requiring maintenance only every six months;

Customized R&D & Technology First

With our own professional design team and advanced processing workshop, we focus on the "low-carbon + intelligent" upgrade of engine-driven welding machines: We support on-demand customization: We can develop exclusive models for special scenarios such as offshore wind power (IP68 protection) and Arctic LNG (-50℃ low-temperature resistance), delivering customized solutions in as little as 30 days;

MANUFACTURING

Advanced automatic machines, strictly process control system. We can manufacture all the Electrical terminals beyond your demand.

Ultimate Quality Control, Global Trust

We have established a comprehensive quality control system through ISO9000 quality management certification, CE certification, and professional supplier capability assessments. This system ranges from brand-level sourcing of core components (such as engines and IGBT modules) to our self-built professional testing laboratory. Each welding machine undergoes 72 hours of extreme operating condition testing (high and low temperatures, high humidity, and vibration) to ensure a 100% factory pass rate. The equipment boasts over 5000 hours of trouble-free operation, making it fully adaptable to high-standard operating scenarios in oil and gas, infrastructure, and other industries.

PRODUCTS

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Inverter Handheld Plasma Cutting Machine with IP21S Protection 3~380V Input Power and 60% Duty Cycle for Carbon Steel Alloy Steel and Nonferrous Steel Cutting

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WD600 600A Pipeline Welding Machine with Prime Power 36Kw and 1500rpm Diesel Engine

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LWG8000iE Portable Engine Driven Arc Welder with 22L Fuel Tank 6.8kw Running Watts and 420cc Engine Displacement

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PW-100 Pipeline Welding Machine with 0.5-5m/min Welding Speed 100L Fuel Tank and 4 Cylinders Air-cooled Engine

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Fully Positioned Automatic Pipe Welding Machine with IoT Technology for Remote Maintenance and Intelligent Programming

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Industrial Rated 250A Engine Driven Arc Welder with 7.5kW Auxiliary Power and 32L Fuel Capacity

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GENWELD 198DPSC Diesel Portable Screw Compressor with 2 Wheel Design Yuchai 191KW Engine and 20 m3/min FAD

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2.0W Inverter Silent Generator

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More Products

220V Input 2000W Power 0.1-3.0mm Welding Thickness Cold Welding Machine Intelligent Precision Welding Machine

4000W Industrial Cold Welding Machine

Industrial Diesel Welding Generator with 3kW Auxiliary Power and 60% Duty Cycle for MMA TIG Welding

4.0kW Gasoline Inverter Generator

2.2kW / 230V / 50Hz / 60Hz Portable Diesel Generator

2.3kW Digital Inverter Generator

Intelligent 3.5kW Portable Inverter Silent Generator

2.0W Inverter Silent Generator

Portable 12.5L 2.2kW Diesel Power Generator Recoil Starting

Industrial Class Portable 200A MMA / TIG Gasoline Welding Generator （Economic model）

LW-J100 Intelligent Precision Cold Welding Machine for 0.12-2.0mm Metal Sheets with Non-deformation Welding

15L 4.2kW Inverter Gasoline Generator Single Phase E Start

3.6kW Inverter Gasoline Generator

AC 120v Portable Gasoline Generator 15L Gasoline Powered Inverter Generator

4kW 230V Portable Gasoline Generator Overload Circuit Protection

LBSC 3600W 11L Portable Gasoline Generator With Single Cylinder

AVR Protection Gasoline Inverter Generator

7500W Industrial Intelligent Cold Welding Machine IP21S Protection

Arc Voltage Monitoring Cold Welding Machine 310A Repair Surfacing

4kW Intelligent Spark Sheet Metal Welding Machine IP40

SOLUTION

12-09 2025

Oil and Gas Pipeline Welding Solution

(I) Solution OverviewThe oil and gas pipeline welding solution addresses the harsh working conditions of onshore and offshore oil and gas pipeline construction and maintenance. It integrates high-power, high-stability engine-driven welding machines, pipeline-specific welding equipment, and auxiliary ...

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12-09 2025

Digital Laser Welding Solution

(I) Solution OverviewThe digital laser welding solution leverages the advanced digital technology and laser welding equipment R&D capabilities of Chongqing Lianwai Technology Co., Ltd., integrating a full range of IGBT inverter welding technology, multi-plate motion technology, 60% load rate design, ...

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07-21 2025

Introduction to Welding Technical Parameters of LWG600A Diesel Welder Generator

Introduction to Welding Technical Parameters of LWG600A Diesel Welder Generator Welding Current Range: The LWG600A diesel welder generator has an extremely wide current adjustment range, which can be flexibly adjusted between 30A and 500A. This feature enables it to adapt to various welding ...

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Engine Driven Arc Welder

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Engine Driven Arc Welder

Small Engine Driven Welder

Engine Driven Welding Machine

Portable Welder Generator

Cold Welding Machine

Pipeline Welding Machine

Portable Inverter Welder

Diesel Welder Generator

Petrol Welder Generator

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Portable Diesel Generator

Diesel Generator Set

Inverter Silent Generator

Portable Gasoline Generator

Handheld Laser Welding Machine

Laser Welding Machine

Digital Welding Machines

Cutting machine series

Dc Inverter Welding Machine

Diesel Portable Screw Compressors

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Chongqing Lianwai Technology Co., Ltd.

recommended products

The company launched a full range of welding equipment and workstations to cover multiple welding needs

Notice of Acceptance of Trademark Registration Application

Specialty products sweeping the Philippines

New electric welding machines are shipped in batches! Professional welding equipment covering all kinds of scenarios

Chongqing Lianwai Technology Co., Ltd. GENWELD American Standard has been registered

Lianwai Technology has recently introduced four major digital welding machines. Those who are interested can call or WhatsApp: 13696424316 for consultation.