Import Copper Tube & Aluminum Tube Butt Welding Machine — Buy in Bulk from Supplier in China

The Un3 series welding machine is a resistance butt welding system designed for copper and aluminium tubing. It operates on a 380-480 VAC supply at 50/60 Hz and delivers a rated capacity between 50 kVA and 100 kVA. The equipment can join tubes with diameters from 4.0 mm to 25.05 mm for both copper and aluminium. Its clamping cylinder provides a 30 mm stroke while the horizontal cylinder travel is adjustable from 5 mm to 100 mm.

The machine uses a programmable logic controller for process control and a micro‑computer welding controller for precise current regulation. High‑precision oil‑bearing aluminium alloy cylinders ensure smooth motion and repeatable weld quality. Typical industry installations pair such welders with a 30 kW auxiliary power unit to maintain stable current (typical). Standard machine dimensions are around 1200 × 800 × 1500 mm and a weight near 800 kg (typical), allowing placement on a standard workshop floor.

This equipment is commonly used by pipe manufacturers, HVAC‑duct fabricators and marine pipe‑fitters who require seamless joints without gas leakage. Buyers usually request a quotation that includes delivery terms, warranty period and after‑sales service. The supplier does not list a minimum order quantity, lead time or payment conditions, so those details should be confirmed directly. Interested importers should contact Guangzhou Duro Welder Ltd. to obtain the full trade package and certification documents.

Guangzhou Duro Welder Ltd. is located in Deli Industrial Park, Hu Town, Boluo County, Huizhou City, Guangdong Province, China, zip 516139. It is listed with a harbor trust tier, indicating that the platform has confirmed its basic business credentials. The supplier’s response rate is currently 0 %, with no average response time recorded, suggesting that enquiries may require follow‑up.

The company advertises resistance butt welding machines for copper and aluminium tubing, and the Un3 series is the only model detailed in the current listing. No information is provided about production capacity, export certifications or after‑sales service, so buyers should request those specifics before placing an order.