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Exothermic Welding
Uni-Weld graphite moulds, weld powder and tool kits — permanent molecular connections for earthing conductors.
The Uni-Weld exothermic welding system joins copper conductors, busbar, earth rods and rebar with a welded bond that will not loosen, corrode or increase in resistance over time. Moulds are catalogued in 27 joint types, with weld powder charges from 45g to 250g.
The Uni-Weld Exothermic Welding Range
Everything needed to make exothermic welded connections on site — graphite moulds for every standard joint, weld powder, handling clamps and the welding tool kit.
Exothermic welding makes the highest-integrity joint in an earthing system. The conductors are placed in a graphite mould, a measured charge of weld powder is added and ignited, and the reaction produces molten copper that fuses the conductors into a single molecular bond — with a current-carrying capacity at least equal to the conductor itself, and no mechanical interface to loosen or corrode.
The Uni-Weld range covers the joints used across earthing and lightning protection installations: busbar to busbar, cable to cable, cable to earth rod, cable to busbar, rod to busbar and cable to rebar. Each joint type is identified by its code — quote the code, with your conductor sizes, when you enquire so the correct mould and powder charge can be supplied.
Mould Joint Types
Uni-Weld graphite moulds are made to order for the joint being welded. Select the joint type for the conductors being connected — the mould is supplied to suit your conductor sizes, together with the matching weld powder charge.
Joint Type — Busbar to Busbar
Joint Type — Cable to Cable
Joint Type — Cable to Rod
Joint Type — Cable to Busbar
Joint Type — Rod to Busbar
Joint Type — Cable to Rebar
* Custom sizes and joints available on request
Welding Equipment & Consumables
The clamp, powder and tool kit used with every Uni-Weld mould — each item listed with its part number.
Welding Handling Clamp
| Mold Type | Part No |
|---|---|
| C | UHCC |
| D | UHCD |
| E | UHCE |
Welding Powder
| Welding Powder (g) | Part No |
|---|---|
| 45 | UP45 |
| 65 | UP65 |
| 90 | UP90 |
| 115 | UP115 |
| 150 | UP150 |
| 200 | UP200 |
| 250 | UP250 |
Welding Tool Kit
| Description | Part No |
|---|---|
| Welding Tool Kit | TK-100 |
More From The Product Range
Uni-Weld connections join the conductors, earth rods and accessories of the wider Unitech earthing and lightning protection range.
Air Termination
Air terminals and lightning rods for the interception of direct lightning strikes.
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Conductors
Flat and round copper and aluminium conductors for down-conductor and earthing networks.
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Conductor Accessories
Clips, fixings and connectors for securing and jointing conductor runs.
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Earthing Rods
Copperbond, solid copper and stainless steel earth rods, with driving studs, couplings and spikes.
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Earthing Accessories
Bonds and clamps, earth plates and mats, inspection pits, soil improvement agents and earth points.
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Fibre Glass Ladder
Non-conductive fibre glass ladders for safe electrical installation and maintenance work.
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Tested & Certified
Products tested and certified to international standards — IEC 62561, BS EN 50164, UL 467.
Request a Quotation
Tell us which Uni-Weld moulds, weld powder or tool kits your project needs — joint type codes, conductor sizes, quantities, destination — and our sales team will reply with pricing and technical support.