Welding Earth Clamps - Welding and Fabrication

Welding earth clamps provide a low-resistance return path between the welding circuit and the workpiece during shipboard welding, repair, and fabrication. They are typically made from copper-plated steel or brass with a spring-loaded jaw and insulated handle.

ProShipWorks provides end-to-end support to source and supply Welding Earth Clamps for marine vessels, ship operators, industrial facilities, maintenance teams and procurement departments.

Last updated: October 11, 2026

Product Information

Product Name	Welding Earth Clamps
Product Category	Welding and Fabrication
Product Reference	1228
Brands / Manufacturers	ESAB, Lincoln Electric, GYS
Unit of Measure	Piece

Key Features

Key Feature
1. Spring-loaded or screw-operated jaw
2. Copper-plated or brass conductive construction
3. Insulated handle for operator protection
4. Typical current ratings from 200 A to 600 A
5. Cable lug or welding-cable connection

Applications of Welding Earth Clamps

Application
1. Ship hull and structural steel welding
2. Marine pipe, tank, and machinery fabrication
3. Shipyard repair and maintenance welding

Models & Manufacturers

Model	Manufacturer
K910-1 Ground Clamp	Lincoln Electric

Technical Specifications

Model	Specification	Value	Unit
Typical marine welding earth clamp	Rated welding current	200-600	A
Typical marine welding earth clamp	Suitable welding cable size	35-95	mm²
Typical marine welding earth clamp	Jaw opening	Approximately 50-100	mm
Typical marine welding earth clamp	Duty cycle	Dependent on manufacturer and rated current	—

Standards, Certifications & Class Approval

Review the available standards and approval information relevant to the product. Actual certification, material traceability, inspection and classification requirements depend on the product type, intended application and purchasing specification.

Applicable Standards & Certification	Welding cable coupling devices may be designed in accordance with IEC 60974-12 / EN 60974-12. The clamp should be suitable for the welding machine rating and comply with the manufacturer's electrical and safety requirements.
Class Approval	Individual welding earth clamps are not normally type-approved by DNV, ABS, Lloyd's Register, BV, or ClassNK. Their use onboard classed vessels is generally controlled through approved welding procedures, equipment inspection, and yard or vessel safety requirements.

Installation, Maintenance & Safety Information

Installation Notes	Select a clamp rated for the welding current and cable size. Attach it directly to clean, bare metal as close as practical to the weld, using a properly crimped cable lug. Keep the return path short and avoid painted, rusty, wet, or contaminated contact surfaces.
Maintenance Tips	Inspect jaws, spring pressure, cable connection, insulation, and contact surfaces before use. Remove oxidation and weld spatter, tighten loose connections, and replace clamps with overheating, cracked insulation, weak springs, or damaged jaws.
Safety Notes	Disconnect the welding power source before connecting or removing the clamp. Do not use the vessel hull, piping, fuel lines, or grounding conductors as an uncontrolled return path. Prevent contact with combustible materials and follow shipyard hot-work, electrical isolation, and permit requirements.