Thomas Dudley is a quality assured casting foundry

We are accredited to:

  • BS EN ISO 9001 (Quality Management Systems)
  • BS EN ISO 14001 (Environmental Management Systems)
  • OH SAS 18001 (Health & Safety Management Systems)


Furthermore, we employ lean manufacturing and Six Sigma methodologies to help ensure that we manufacture grey iron castings and SG iron castings to the highest possible standard.

We are also committed to greener manufacturing. This commitment is underlined by our Envirofacturing initiative which outlines the steps that we take to remain at the forefront of environmentally responsible production.

Six Sigma is a set of techniques and tools for process improvement. It was developed by Motorola in 1986. Six Sigma seeks to improve the quality of process outputs by identifying and removing the causes of defects (errors) and minimizing variability in manufacturing and business processes.

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