High-Quality Plasma Bore Welding Torch DNPT30018-HQ Manufacturers, Factory

The 300A bore welding torch has a high current welding capability, suitable for efficient welding of medium and thick materials, and is designed for bore structure, which can realize high-quality welding in a deep and narrow space. With stable arc and good weld shape, it is suitable for automated equipment to improve production capacity and consistency, and is equipped with a highly efficient cooling system to support long-time continuous work, which is widely used in automotive, machinery, pipe fittings and other precision bore welding scenarios.

Product Description

300A plasma bore welding gun consists of three parts: upper gun body, lower gun body and insulator. The upper gun body is used to fix and install the tungsten electrode and connect the water and electric joints; the lower gun body fixes and installs the nozzle and constitutes the water-cooled cavity of the nozzle and connects the joints of the water, electric, gas and powder pipelines; the insulator ensures the insulation of the upper and lower gun bodies and connects the fixing of the upper and lower gun bodies. The protective gas of the gun body completes the gas diffusion inside the gun body to form a uniform protection.
⚙️ 300A Plasma Bore Welding Torch Parameters
Product Parameters and Models DNPT30018-HQ
Tungsten pole 4.8mm
Current range 50-300A
Copper nozzle cooling method Direct water cooling
Ionized gas 1.0-4.0L/min
Protective gas 5-20L/min
Powder feed gas 1.0-4.0L/min
Copper nozzle powder runner Two way/Four way
Powder feeding capacity 0-3KG/h
Welding torch return water flow 3.2L/Min
Granularity 100-270 mesh
300A Plasma Bore Welding Torch Parts Diagram
📋 Product Components & Material Specifications
Serial Number Product Name Material Code Product Dimension
A 300A Bore Welding Torch (model 18) D2090000 /
1 300A Bore Copper Rear Cap D2090500 15*8
2 300A Bore Rear Cap Rubber Ring D2090510 13*1.5
3 300A Bore Tungsten Clamp D2090300 11*10
4 300A Bore Insulation Cover D2091100 45*22
5 300A Bore Insulating Mat D2090700 42*2
6 300A Bore Large Rubber Ring D2090900 23*1.5
7 300A Small Rubber Ring In Bore D2090800 13*1.5
8 300A Bore Copper Nozzle D2090110 31*13
9 300A Bore Porcelain Protective Cover D2090600 42*15
9 300A Bore Copper Protective Cover D2091000 42*15
10 300A Bore Tungsten Pole D2090400 4.8*38
11 300A Bore Centering Ring D2090200 9*11
12 Tungsten pole calibrator D2000100 10*32
Frequently Asked Questions (FAQ)
1. What are the main components of the 300A plasma bore welding torch?
The torch consists of three primary parts: the upper gun body (for tungsten electrode and water/electric joints), the lower gun body (for nozzle and pipelines), and the insulator which ensures insulation between the two bodies.
2. What is the current range and tungsten pole size for this model?
This welding torch operates within a current range of 50-300A and utilizes a 4.8mm tungsten pole.
3. How is the cooling system designed for the copper nozzle?
The copper nozzle uses a direct water cooling method. It features a water-cooled cavity and requires a return water flow of approximately 3.2L/Min for efficient operation.
4. What are the gas flow requirements for ionized and protective gases?
The ionized gas flow should be between 1.0-4.0L/min, while the protective gas flow ranges from 5-20L/min to ensure uniform protection.
5. What type of powder feeding capacity does this torch support?
The torch has a powder feeding capacity of 0-3KG/h and supports both two-way and four-way powder runners within the copper nozzle.
6. What is the recommended granularity for the powder used?
The recommended granularity for materials used with this 300A plasma bore welding torch is between 100-270 mesh.

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