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PDI BLOG

Insights from the Fabrication Floor

Guidance on custom fabrication, duct design and sizing, material selection, and
temperature performance for corrosion-resistant PVC & CPVC duct systems,
written for the engineers, contractors, and facility teams who specify them.

Guidance on custom fabrication, duct design and sizing, material selection, and temperature performance for corrosion-resistant PVC & CPVC duct systems, written for the engineers, contractors, and facility teams who specify them.

★ FEATURED
Custom PVC ductwork installed in an industrial ventilation system, featuring large duct sections, curved elbows, bolted flange connections, and structural supports.
CUSTOM FABRICATION

How Custom PVC Ductwork Improves Industrial Ventilation Performance

Industrial ventilation systems must do more than move air from one location to another. In manufacturing facilities, laboratories, chemical processing operations, and other industrial environments, exhaust ductwork must accommodate equipment layouts, operating...

□ October 30, 2026 • ◷ 14 min read
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Occasional material guides, application notes, and product updates for the people who specify and fabricate corrosion-resistant duct. No spam — just the useful stuff.

Occasional material guides, application notes, and product updates for the people who specify and fabricate corrosion-resistant duct. No spam — just the useful stuff.

CSSI Logo
A Division of Plastic Design Industries
Chemical Systems Services, Inc.

Custom plastic environmental control and containment equipment, fabricated in corrosion-resistant thermoplastics.

Company Overview

Chemical Systems Services, Inc. (CSSI) is a leading custom designer and manufacturer of plastic environmental control and containment equipment, fabricating corrosion-resistant systems from thermoplastics including polypropylene, PVC, CPVC, and PVDF.

Capabilities & Products

An experienced staff of chemical engineers and designers builds systems to each client’s specifications. The range includes PVC and CPVC fittings, blast gates and dampers, scrubbers, fume hoods, tanks and sinks, containment trays, and casework — most fittings stocked for fast delivery, all made in America.

Plastic Design Industries
Plastic Fabrication & Engineering
Plastic Design Industries

New England’s oldest and largest plastic fabrication house — engineered systems from prototype to full production.

Company Overview

Plastic Design Industries (PDI) uses the unique properties of modern engineering plastics to supply systems and products for industries from biomedical and pharmaceutical to microelectronics and photonics. With automated fabrication equipment and expert computer-aided design, PDI supplies any quantity — from a one-off prototype to a full production run.

Capabilities & Services

PDI takes projects from concept to completion — design, engineering, testing, and validation — spanning cleanroom essentials, fume hoods, wet-process equipment, custom tanks, lab furniture, pure-fluid (PFA) assemblies, casework, and precision welding and machining. ISO 9001 accredited and made in the USA.