RECENT PROJECTS
Case studies and recent projects
​Diamond are proud to highlight a selection of completed projects and testimonials for a number of our satisfied customers. Case study documents can be downloaded from selected project highlights below:
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Hitachi Class 395 EMU Full Refurbishment
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29 x 6 car units receiving full interior refurbishment.
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Modification to toilet floors design and installation.
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Turnkey service and project management.
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Starting 2023.
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Audit reporting and project updates.
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I worked alongside Diamond on a collaborative project, they were easy to communicate with and product delivery was always on time.
Rachel Hawksworth
Project Manager - Chrysalis Rail
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Cross Country Class 170 DMU Front of House
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29 units receiving seat repairs.
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A new cast tool was created to manufacture new grab handles.
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Painting of interior components requiring dilapidation repair.
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Vinyl and labels removed and replaced.
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A turnkey team completing 1 unit per day.​​​
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I worked closely with a number of suppliers, one of which being Diamond . Whilst the contract was via the operator, I found them to be responsive to programme updates and the quality of the product and installation team exceeded expectation. Regular communication was key to a good working relationship, and I would not hesitate to use them again in support of delivering a refresh/refurbishment project.
Alison Smith
Senior Project Manager - Gemini Rail
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CAF Drivers seat footrests
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Solution needed for new trains 2nd persons seat ergonomics.
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Design of adjustable footrest
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Crashworthiness accredited.
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Manufactured by Diamond.
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Installation on customer site.
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Hitachi toilet floor modifications
• Engineering solution developed for identified problem.
• Design and manufacture of floor plate modification.
• Modification procedure written.
• Engineering change supported.
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Diamond have worked with Northern over the past three years providing an excellent service in manufacturing and delivering refurbished seats for o​ur fleet refurbishment project including the transition from “flat cloth” to “moquette” seat coverings. Customer feedback has seen improved passenger survey results, and the seats compliment the overall product.
Andy Marden
Head of Transformation - Engineering Northern Rail
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Sheffield Supertram depot refurbishment
•Supertram depot repair and repaint.
•Working within customer availability and rotating to ensure the depot could continue to operate around works on site.
•Material procurement with a 10-year warranty.
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Siemens Class 350 EMU Refurbishment
•30 x 350/1 units and 10 x 350/4 units completed.
•Standard and First class.
•Frames, shells, foams, covers, arm rests, grab handles and all painting and powder coating.​​​​​
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Alsthom/Transport for Wales Class 175 DMU
•26 x 2 and 3 car units.
•Frames, shells, foams, covers, arm rests, grab handles and all painting and powder coating.
•Full installation on site.
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Diamond’s seats have brought a uniform brand across our variety of rolling stock.
Throughout the 3-year refurbishment project, we’ve been impressed by the quality delivered and Diamond’s flexibility to adapt to our changing requirements.
Tom Parker
Rolling Stock Graduate – Transport for Wales
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Stadler/Tyne and Wear Metro Front of House
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Deep cleaning
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Seat refurbishment
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Painting of interior components
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A turnkey team​​​
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BR Standard Class 6 - 72010 Hengist
•Conversion of historic recorded plans to modern day usable versions.
•3D CAD modelling of parts prior to production.
•Construction of parts - tooling, casting, machining and assembly.
•Non-destructive testing and quality assurance.
•Compliance with modern standards for mainline running.
•Certification and acceptance procedures developed.
•Assembly of the full locomotive on our site in Sheffield.
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