Engineering a Company & Culture to Be Proud Of

For 25 years, Diamond Engineering has pioneered cutting-edge bespoke manufacturing solutions.

25+

Years of industry experience

Diamond Engineering — Engineering Excellence

Diamond Engineering (formerly CTL Seal Ltd) has a long history of steel manufacturing in the historic ‘Steel City’ of Sheffield, long before it became a division of the Diamond Group.

For 25 years we have been pushing the boundaries of what's possible in steel manufacturing, and our investment in the latest technologies and machinery allow us to provide manufacturing solutions that are tailored to each clients’ unique requirements and challenges.

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Our commitment to quality and efficiency is matched by our commitment to the incredible team we have forged here, and we continue to invest in the development of all of our staff, from shop floor to management, maintaining and improving the culture of personal and professional growth and development that we have created. We also promote from within where possible, ensuring that our culture and expertise is prevalent within all levels of our workforce.

This fusion of skilled professionals, clarity in requirements and drive to deliver a successful project ensures our solutions are innovative, reliable and as sustainable as possible, with a lasting impact on the industries we serve. Versatile and flexible, we handle projects of any scale with full project management and expert engineering advice, available 24/7 to meet your precise manufacturing requirements from design through to delivery.