ABOUT PDI
Industrial PVC & CPVC Fabrication Since 1976
Plastic Design Industries fabricates PVC and CPVC duct systems, fittings, and built-to-spec components for the environments where steel corrodes and standard duct fails.
For nearly five decades, engineers, contractors, and facility teams have relied on our material expertise and precision fabrication to move corrosive air and process exhaust — safely, and built to last.
1976
Fabricating since
PVC·CPVC
Material focus
Built-spec
Every assembly
Nationwide
Shipping & support
1976
Fabricating since
PVC·CPVC
Material focus
Built-spec
Every assembly
Nationwide
Shipping & support
WHAT WE BUILD
Built Around Industrial PVC Systems
Built Around Industrial PVC Systems
Elbows
Reducers
Saddles
Dampers
Blast Gates
Custom fabrication
SINCE
1976
- North Chelmsford, Massachusetts
Decades of Industrial Fabrication Expertise
Decades of Industrial Fabrication Expertise
Founded in 1976, Plastic Design Industries has spent nearly fifty years perfecting thermoplastic duct fabrication. What began as a specialist fabrication shop is today a trusted source for PVC and CPVC ventilation systems built for the most demanding corrosive environments.
We combine material expertise, advanced welding and machining, and disciplined quality control to deliver systems engineered for performance — and built to last in the field.
~50 yrs
Of continuous thermoplastic fabrication
PVC · CPVC
Dual-material specialization
6"–24"+
Standard duct diameter range
Built-to-spec
Custom assemblies on demand
~50 yrs
Of continuous thermoplastic fabrication
PVC · CPVC
Dual-material specialization
6"–24"+
Standard duct diameter range
Built-to-spec
Custom assemblies on demand
Capabilities
Fabrication & Manufacturing
Our equipment, processes, and skilled fabrication team ensure every system we build meets exacting industrial standards.
PVC & CPVC Welding
Triple-pass hot-gas and extrusion welding for leak-resistant joints rated for continuous industrial service.
CNC Machining
Precision machining of flanges, ports, and custom fabricated components to repeatable tolerances.
Dimensional Consistency
Fittings built to controlled O.D. and wall standards for predictable, accurate field fit-up.
Custom Assemblies
Built-to-spec duct runs, manifolds, and transitions engineered around your application requirements.
Industrial Ventilation Systems
Complete corrosive air-handling and process exhaust systems, fabricated to order.
Engineering Support
Application-driven guidance from material selection through submittal and delivery.
WHERE WE WORK
Industries We Serve
Chemical Processing
Wastewater Treatment
SemiconductorManufacturiing
PharmaceuticalTesting
Industrial Ventilation
Manufacturing Plants
Inside PDI
Our Product
