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Bottled Exothermic Welding Powder Wholesale

  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
  • Bottled Exothermic Welding Powder
Shaoxing Sweld Electric Co., Ltd.

Bottled Exothermic Welding Powder

Product Overview
Exothermic welding powder is the key material used to create permanent electrical connections between conductors in grounding and lightning protection systems.
Through a high-temperature chemical reaction, the powder produces molten metal that bonds the conductors together, forming a strong and highly conductive joint.
The powder amount must match the reaction chamber volume of the mold and the size of the conductors, ensuring proper weld formation and reliable performance.


Description
High-purity copper powder for single welds. Rapid, stable reaction forming strong one-piece welds.
Standard-grade copper alloy powder for single welds. Reliable conductivity and corrosion resistance.


Suitable Welds
Match the powder amount to the mold cavity volume for complete weld formation.
Match the powder amount to the mold cavity volume.

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  • Product Details
  • FAQ

Available Specifications

Copper Content Weight Options Weld Type
≥98% Copper 45g / 60g / 90g / 115g / 150g / 200g / 250g / 300g Single weld
≥88% Copper 45g / 60g / 90g / 115g / 150g / 200g / 250g / 300g Single weld
≥98% Copper 1kg Bulk powder
≥88% Copper 1kg Bulk powder

Note
45g – 300g powders are designed for single-weld connections.
The exact powder weight must match the mold cavity volume and conductor size.
1kg powder is bulk packaging, which can be divided for multiple welds or resale.

Key Features

Feature Description
High Reaction Temperature Above 2500°C, melting base metals to form a one-piece weld
Excellent Conductivity Weld joint conductivity equal to or better than the conductor
Corrosion Resistance Long-term stability in harsh environments
Precise Powder Amount Each specification corresponds to a specific mold cavity volume
Easy Operation No external power required
Wide Metal Compatibility Copper, copper-clad steel, steel, stainless steel, zinc-coated steel
Packaging Options
Both packaging types are available for 45g–300g specifications.
Packaging Type Description
Bottle Packaging Convenient for storage and transportation. Preferred in some markets.
Bag Packaging Flexible packaging format is preferred by certain customers or regions.
The choice between bottle and bag packaging depends on customer preference and market habits, while the powder composition and welding performance remain the same.

FAQ – Exothermic Welding Powder 
 
Q1: How do I choose the correct powder weight? 
The powder weight must match: 
The mould reaction chamber volume 
The size of the conductors 
The type of welding connection 
Each weld configuration requires a specific powder amount to ensure proper weld formation. 

Q2: What is the difference between bottle packaging and bag packaging? 
There is no difference in welding performance. 
Bottle and bag packaging only reflect customer preferences and regional market habits. 

Q3: What is the difference between 88% and 98% copper powder? 
Copper Content Characteristics
98% Copper: Higher conductivity and corrosion resistance
88% Copper Cost-effective and widely used for standard grounding projects

Q4: What metals can be welded? 
Exothermic welding powder is suitable for: 
Copper 
Copper alloys 
Copper-clad steel 
Steel 
Stainless steel 
Zinc-coated steel 

Q5: What is the purpose of 1kg of bulk powder? 
1kg powder is bulk packaging, typically used for: 
Multiple welds 
Custom portioning by contractors 
Distribution or resale 

Q6: Do I need external power to use exothermic welding powder? 
No. The welding reaction is a self-sustaining chemical reaction, so no external power source is required. 

Q7: What is the shelf life of the powder? 
When stored in a dry, sealed environment, the typical shelf life is 2–3 years.

Related Products

  • Exothermic Welding Powder
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About Us
Shaoxing Sweld Electric Co., Ltd.
Shaoxing Sweld Electric Co., Ltd. is China Bottled Exothermic Welding Powder Suppliers and Bottled Exothermic Welding Powder Factory, was established in 2018, located in Shengzhou, Shaoxing, China, the hometown of Shaoxing Opera. Covers an area of 3000 square meters, has a professional technical team and sales elite, a total of more than 50. The factory mainly produces exothermic welding powder and a complete set of products, including Ground rods, Ground wire, Stranded Wire, all kinds of electrical hardware connection parts and lightning rod products. We have an annual production capacity of 500 tons of exothermic welding powder, providing various packaging solutions. Equipped with 7 high-speed CNC machining centers, with a daily production capacity of 180 sets of exothermic welding molds, it can provide customers with real-time design and manufacturing molding. Sweld has passed ISO9001 quality management system certification, ISO14001 environmental management system certification, and ISO45001 occupational health and safety management system certification. And we also provide exothermic welding powder export special dangerous package certificate, exothermic welding molds export license, all kinds of products have passed the national certification laboratory product testing certification.
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