Thermoforming vs CNC Sheet Fabrication for Data Center Plastic Parts
September 28, 2026 • 5 min read
Data center plastic fabrication at Blue Ridge Thermoforming (BRT USA) is two processes under one roof in Greenville, SC. CNC-routed HDPE duct bank spacers are one line. Heavy-gauge thermoformed covers, housings, trays, and panels are a separate line. Choosing the right process early avoids the common confusion that every plastic part for a data center is “thermoformed.”
Two processes, one plant
CNC HDPE sheet
Need: Hole arrays that hold conduits in a concrete bank. Typical parts: Duct bank / conduit spacers
Heavy-gauge thermoforming
Need: Formed 3D covers, shrouds, housings, trays, panels. Typical parts: Equipment covers, cabinet skins, cable organizers, large panels
Duct bank spacers are not thermoformed. Thickness for spacers is typically 3/8 in or 1/2 in HDPE, cut from your drawing. Thermoformed parts use a forming envelope up to 60 × 100 in and heavy-gauge material from about 0.030-0.500 in, depending on the application.
When CNC HDPE sheet is the right call
Choose CNC sheet fabrication when the part is essentially a flat board with a precise hole pattern:
Choose heavy-gauge thermoforming when the part needs formed depth, cosmetics, or enclosure geometry:
Equipment covers and shrouds
Housings and kiosk-style enclosures
Trays and cable organizers
Large panels and cabinet skins
Materials available for heavy-gauge work include HDPE, HMWPE, ABS, HIPS, PET/PETG, polycarbonate, PVC, and LDPE (as listed on the data-center plastic parts page). Forming is followed by CNC trimming so openings and edges match the design. Explore equipment covers and kiosks and the hub at custom plastic parts for data centers.
Envelope and plant notes
Heavy-gauge forming areas go up to 60 × 100 in. CNC trim and sheet routing both run on in-house 5-axis equipment. Tooling, forming, trimming, and assembly sit under one roof at 184 Commerce Center, Greenville, SC 29615. ISO 9001:2015 applies to the quality system. The same quote path covers either process: tell us whether you need CNC spacers, thermoformed covers and housings, or both.
How to avoid process confusion on RFQs
On the RFQ or drawing package, label the part family clearly:
“CNC HDPE duct bank spacer: sheet routing” for underground arrays
“Heavy-gauge thermoformed cover/housing” for formed parts
If a package mixes both (common on campus builds: spacers for duct banks plus covers for gear), send both drawing sets. BRT will quote them as separate lines rather than forcing one process onto both.
Applications checklist by process
CNC HDPE sheet (spacers): underground concrete-encased duct banks; custom conduit arrays; mixed-size power and fiber banks; prefabricated arrays assembled outside the trench; boards that remain in the pour. Typical thickness 3/8 in or 1/2 in. Spacing along the run typically every 4-7 ft.
Heavy-gauge thermoforming (covers and related): equipment covers and shrouds; housings and kiosk-style enclosures; trays and cable organizers; large panels and cabinet skins. Forming envelope up to 60 × 100 in. Materials include HDPE, HMWPE, ABS, HIPS, PET/PETG, polycarbonate, PVC, and LDPE as listed on the hub page.
FAQ
Are data center duct bank spacers thermoformed?
No. They are CNC-routed HDPE sheet. Thermoforming is used for covers, housings, trays, and panels.
What is the forming envelope for thermoformed DC parts?
Up to 60 × 100 in, with heavy gauge typically in the 0.030-0.500 in range depending on the part.
Can one vendor supply both spacers and covers?
Yes. Both process lines run in the Greenville plant. Use the same quote form and specify which line each part belongs to.
Request a quote
Tell us whether you need CNC HDPE duct bank spacers, heavy-gauge thermoformed covers and housings, or both. The quote form is the same path either way.