Quality Assurance – Precision, Reliability & Compliance

At Joseph & Jesse Siddons Ltd, we are committed to delivering iron castings of the highest quality, targeting zero defects at the customer’s end and achieving right-first-time results on all new jobs.

We maintain rigorous quality control processes at every stage of production, from material selection to final inspection. Our ISO 9001:2015 certification and Lloyd’s Register approval reflect our unwavering commitment to excellence, compliance, and continuous improvement.

Accreditations & Certifications

Thanks to our ISO 9001:2015 and Lloyd’s Register accreditations, we are also able to offer 3.2 certification with Bureau Veritas, DNV and TUV Nord through their equivalence agreements.

In-House Quality Control & Testing Capabilities

  • Spectrometers (Spectros) – Precise chemical analysis of metal compositions

  • Thermal Analysis (CELs) – Real-time monitoring of metallurgical properties

  • Microscopic Analysis (Micros) – Detailed examination of microstructure and grain integrity

  • Elkem’s EPIC thermal analysis software – enhances process control and efficiency by precisely measuring the nucleation potential of iron

  • Brinell Hardness Testing – Ensuring consistency in material strength

  • Ultrasonic Thickness Gauge (UT Gauge) – Measuring casting wall thickness for accuracy

Additional Testing & Inspection Services

For customers requiring additional verification, we can offer specialist testing services through UKAS-accredited laboratories and trusted industry partners:

  • Mechanical Testing

  • Dimensional Scanning

  • X-Ray Inspection

  • Magnetic Particle Inspection (MPI)

  • Ultrasonic Testing (UT)

  • Pressure Testing

  • Pattern Making

  • Heat Treatment

  • Industrial Painting

Let’s Talk Castings

Get in touch to explore our capabilities and find the right solution for your needs.

T : +44 (0)121 556 0218
E : [email protected]

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