Single Arm Internal Welding Machine

Name: Internal Welding Machine
Uploaded: 2026-04-14T01:05:09+08:00
Description: The Benne welding machine is a core welding equipment specifically designed for the manufacturing industry of large

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Min. Order:	1
Transportation:	Ocean
Port:	Shanghai`,Ningbo,Others

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Product Description

Product Attributes

Packaging & Delivery

Product Description

Product Attributes

Model No.: NHJ

Brand: Tewei

Origin: China

Packaging & Delivery

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Internal Welding Machine

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Product Description

The Benne welding machine is a core Welding Equipment specifically designed for the manufacturing industry of large steel pipes such as power poles, communication poles, and wind turbine towers. It focuses on the internal welding problems of large-diameter and thick-walled steel pipes over 400mm in diameter, completely breaking the limitations of traditional welding methods.

The equipment adopts the internationally advanced gas protection welding process, achieving deep penetration and no oxidation defects in the weld seam through precise gas flow control and arc stability adjustment. The fusion zone strength is consistent with the base material,which can easily meet the high-strength and anti-fatigue requirements of the wind power and power industries for welding structures.

The equipment can be formed in one step without the need for subsequent welding repair or slag removal processes, significantly improving production continuity. Its welding speed can reach 1-3 meters per minute, which is more than 4 times higher than that of traditional manual welding, and can effectively adapt to large-scale and batch production rhythms, significantly shortening the project construction period.

In response to the industry pain points of narrow internal space of large-diameter steel pipes and the inability of manual operations to enter for work, the equipment is equipped with highly-strength slot arms that can be flexibly extended, with a telescopic travel range covering various pipe diameter requirements. It can reach any welding position inside the pipe and accurately complete the automatic welding of complex weld seams such as longitudinal and circumferential welds, avoiding the quality fluctuations, safety hazards, and high labor intensity problems brought by manual welding.

Whether it is the erection of power poles in mountainous areas, the construction of communication towers in cities, or the manufacturing of wind turbine towers at sea, this equipment can maintain stable welding performance, providing efficient and reliable welding guarantees for various large steel pipe structures, and is the core equipment for enterprises to reduce overall production costs, improve engineering quality and production capacity.