Tensile Proof Load Testing Services UK

Tensile proof load testing is a controlled mechanical test that applies a specified tensile force to a component to verify its structural integrity, performance characteristics and compliance with applicable standards.

Unlike operational or live load testing, tensile testing is typically performed in a laboratory or workshop environment using a calibrated test bed. The purpose is to:

• Confirm that a component withstands a specified proof load without permanent deformation
• Validate manufacturer design calculations
• Demonstrate compliance with applicable safety standards
• Support CE / UKCA marking technical file requirements
• Provide traceable documentation for lifting accessories and safety components

Tensile proof testing is commonly used for lifting accessories, chains, eyebolts, fabricated assemblies and other safety-critical components where documented performance verification is required.

For operational or on-site load testing, please refer to our Proof Load Testing page.

Our Manchester testing facility includes:

• 100-tonne capacity computer-controlled horizontal tensile test bed
• NPL-certified calibrated load cells
• Digitally controlled test application and recording systems
• Controlled load application and hold periods
• Digital data capture and reporting

This allows us to perform accurate and repeatable tensile proof load tests in a controlled environment with full documentation.

In addition to high-capacity tensile testing, we also utilise NPL-certified calibrated digital tensile dynamometers with read-outs from 1 to 12.5 tonnes for smaller components and field verification requirements.

We provide a comprehensive range of tensile and related testing services, including:

• Tensile proof load testing
• Stress testing
• Destruction testing (where required)
• Crack detection testing
• Component verification testing
• Technical file support testing

Where applicable, we can also provide:

• 10-tonne live load and operational testing
• 20 tonnes of certified test weights, stillages and beams

Operational and live load testing services are detailed separately on our Proof Load Testing page to ensure the correct testing methodology is selected for your application.

Our tensile proof load testing services support:

• Lifting accessory manufacturers
• Fabrication and structural engineering companies
• Crane and hoist component manufacturers
• Defence and aerospace engineering
• Heavy engineering and manufacturing
• Utilities and infrastructure projects

Testing is commonly required for:

• Chains and lifting assemblies
• Fabricated lifting points
• Eyebolts and anchor points
• Structural lifting attachments
• Prototype components
• Custom lifting devices

All testing is carried out using calibrated equipment with results suitable for inclusion within manufacturer technical files.

Since 1995, machinery and lifting equipment placed on the market within Europe has been required to meet minimum safety requirements under the Machinery Directive.

In the UK, these requirements are implemented through:

• Supply of Machinery (Safety) Regulations 2008
• Health and Safety Executive enforcement guidance

Manufacturers are required to undertake conformity assessment processes and compile technical files demonstrating compliance with relevant Essential Health and Safety Requirements (EHSRs).

Technical files typically include:

• Design drawings and control circuit schematics
• Applicable standards and specifications
• Test results and verification data
• Declaration of Conformity or Declaration of Incorporation

We can supply:

• Proof load test reports
• Crack detection reports
• Destruction test data (where applicable)
• Calibrated load verification records

These documents can be included within your technical file to demonstrate due diligence and structural verification.

Tensile proof load testing may be required to:

• Validate design calculations for new lifting accessories
• Verify performance of fabricated lifting points
• Confirm compliance prior to CE / UKCA marking
• Support third-party inspection requirements
• Demonstrate structural integrity following modification or repair
• Provide traceable documentation for high-risk or regulated industries

For higher-risk machinery categories, independent testing data may be required as part of conformity assessment.

Our testing services provide traceable, calibrated evidence of load performance suitable for regulatory and client audit requirements.

Following tensile proof load testing, we can provide:

• Formal tensile proof load test certificate
• Load application data and recorded peak loads
• Crack detection report (if applicable)
• Destruction test data (if applicable)
• Calibration traceability information

All reports are prepared for inclusion in manufacturer or project technical files and can support internal quality systems and external compliance audits.