Chongqing Lianwai Technology Co., Ltd.

Quality Engine Driven Arc Welder, Small Engine Driven Welder manufacturer from China

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New model:B-5.0

November 14, 2025

Old vs. New!
The Evolution of Pipe Welding Equipment.
The new model is smaller and performs better. Next up is the testing of the new model. Which one do you prefer? Leave a comment below and let's discuss!

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Chongqing Lianwai Technology Co., Ltd.

Quality Engine Driven Arc Welder, Small Engine Driven Welder manufacturer from China

New model:B-5.0

LWG-1000W handheld laser welding machine

LWG-1000W handheld laser welding machine

4.0mm rod testing video(LWG230C WELDING GENERATOR)

IGBT MMA 240mm 130A Inverter Arc Welding Machine

IP23 Gasoline 150A Portable Welder Generator Inverter Control

GENWELD LWG600 Welding Machine Generator

WD600 600A Diesel Engine Driven Arc Welder With MMA / TIG / FCAW / Gouging / Cellulose

New model:B-5.0

Portable 250A TIG/MMA Inverter Welder

LWG-C200 Ultra-Laser Cold Welding Machine

GENWELD LWG600A Advanced Pipe Welding Equipment with Digital Control System and Engine-Driven Welder

Handheld Laser Welding Machine

Multifunctional Cold Welding Machine

Advanced Pipe Welding Equipment with Digital Control System and Engine Driven Welder

600A Duetz Air-cooling Welding Generator Used For Maintenance at Offshore Oil and Gas Rigs