10 Upton Drive, Wilmington, MA 01887
Toll Free 800-657-7704
Architectural Laboratory Water Treatment Marine Air Handling

Founded in 1968, PolyFab provides custom engineered plastic fabrications.

We work with many materials and specialize in clear plastics.

Some of the applications we have made include:

  • Large graduated cylinders
  • Architectural formed pieces
  • LEXAN® Tanks and waterbaths
  • Clear PVC and acrylic assemblies
  • Laboratory splash guards and custom trays for all industries
  • Plastic flooring and secondary containment basins
  • Custom PVC, CPVC, polypropylene and HDPE duct work
  • Fume hoods made from any weldable plastic material
  • Marine fresh, gray, and black water tanks
  • Custom polypro and HDPE tanks for chemical storage and treatment
  • Machined polyethylene fittings
  • Routed plastic and wood signs

Click on the navigation to the left for specific product photos, and along the top for application-specific photos and information. We look forward to being of service to you!

PVC Duct Fittings

In addition to the requirements shown under the general listing procedures, the initial request for acceptance shall include test data showing compliance with the requirements indicated below.

1. Re-certification of a manufacturer's product shall be required every 2 years after initial acceptance of that product.

2. ASTM D 1693, "Test for Environmental Stress-cracking of Ethylene Plastics", has been updated on August 10, 2001, to ASTM F 2136, "Standard Test Method for Notched Constant Ligament-Stress (NCLS) Test to Determine Slow-Crack Growth Resistance of HDPE Resins or HDPE Corrugated Pipe" (ASTM News, Oct.2001).

All plastic telecommunications duct and fittings shall be manufactured and tested in accordance with the following specifications:

Type of Plastic

Conduit Sizes
Inch (mm)



1 (25), 1-1/2 (38)

NEMA TC-2 or TC-8


2 (51), 3 (76),
3-1/2 (89), 4 (102)

NEMA TC-2, TC-6,
or TC-8


2 (51), 3 (76),
3-1/2 (89), 4 (102)

All Epoxy Resin Fiberglass conduit and fittings shall be manufactured and tested in accordance with NEMA TC-14, "Filament-Wound Reinforced Thermosetting Resin Conduit and Fittings".  In addition to the requirements shown under the general listing procedures, the initial  request for acceptance shall include test results for all sizes of conduit to be considered for RUS acceptance.

Credit: PVC Duct Fittings

PVC Duct FittingsPlease Contact Us to discuss your PVC Duct Fittings needs. You design it, we build it.

  • Fume Hood
  • PVC Duct
  • Acrylic Fabrication
  • Laminar Flow Hood
  • Cylinder Graduated Reading
  • Fume Hood Laboratory
  • Grillwork
  • Polyethylene Duct
  • Chemical Fume Hood
  • HDPE Tank
  • Plastic Flange
  • PVC Wye
  • HDPE Duct
  • Water and Air Treatment Home
  • Exhaust Ventilation System
  • PVC Damper
  • CPVC Duct
  • Fume Hood Mfg
  • Exhaust Fume Hood
  • Flange Plastic
  • Plastic Flange Bearing
  • HDPE Flange
  • Lexan Fabrication
  • Acid Fume Hood
  • Fume Hood Manufacturer
  • Laminar Air Flow Hood
  • PVC Duct Fittings
  • Uhmw Machining
  • Fume Hood Labconco
  • Cylinder Diagram Graduated
  • PVC Cone
  • Acrylic Cone
  • Benchtop Fume Hood
  • Lexan Machining
  • Walk In Fume Hood
  • HDPE Coupling
  • Large PVC Duct
  • Drape Forming
  • Clear Polycarbonate Pipe
  • CPVC Wye
  • Plastic Fume Hood
  • PE Flanges
  • PVC Reducing Wye
  • Polyethylene Flange
  • PE Coupling
  • techniques | fittings
    home | contact | sitemap | privacy | about | glossary cnc router, graduated cylinder, polypropylene, fume hood, plastic fabrication, rectangular tank, fretwork, pvc duct, plastic water tank, laminar flow hood, plastic machining, marine fish tank, plastic water storage tank, cylinder graduated reading, marine holding tank, acrylic fabrication, marine tank, graduated cylinder definition, polypropylene tank, plastic cone, cnc plastic router, petg plastic
    cnc router | plastic fabrication | acrylic | manufacturing | water & air treatment | resources| web design