Adrian James
Founder
About us
Your source for piling and drilling parts, backed by Sigma’s industry experience.
Experience you can rely on
Decades of piling and drilling expertise to help you find the right parts and keep your equipment working.
70+
Countries shipped to
2000+
Parts for machines
48
Trusted brands sold
50
Years in business
Why choose Sigma?
The experience behind every part
Knowledge
Our background in piling and drilling helps us understand the equipment behind your enquiry. Send us your model, serial number and part reference so we can help identify what you need.
Relationships
We believe in getting to know our customers and their equipment. Whether you need a single replacement or support with an ongoing project, our team is here to help.
Timing
We understand the pressure of downtime. Ask us about availability and lead times so you can plan maintenance and repairs with clearer information.
Quality
The right part starts with the right specification. We help you check the details before ordering, including dimensions, references and compatibility information where available.
Confidence in your parts purchase
Not sure which part you need? Talk to our team before ordering. We can help clarify the specification and explain the applicable delivery, returns and warranty terms.
Here at Sigma
People who understand your industry
Our team brings together sales, administration and specialist sourcing experience to help you find the parts your equipment needs.
From your first enquiry, share your machine model, serial number and any part references or photographs. We’ll help you work through the details.
Get to know who you’re buying from
Meet the Sigma Team
Kurt James
President and CEO
Sarah Sweeney-Marshall
COO
Wynston Weightman
Head of Sales (North America & Europe)
From 1975 to today
Built on decades of experience
Adrian James founded the business in 1975 as James and Sons in Bristol. A move to Middlesbrough followed, along with the Sigma name and a specialism in piling, drilling and foundation equipment.
That background shapes our approach to parts: understand the equipment, listen to the customer and help find the right solution.
Shipping information
Tell us where your parts need to go. We’ll help you understand delivery options and lead times.
Find out moreLooking for a part?
Explore our parts, or send us the details of the component you’re looking for and we’ll help with your enquiry.
View partsNeed a hand?
Have a question about compatibility or ordering? Speak to our team before choosing your part.
Get in touch