Plastic-Lined Pipe Systems, Fittings & Custom Spool Fabrication
Marspec: Your Source for PTFE, PVDF & Polypropylene Lined Piping Systems
Custom Lined Pipe Spools and Fittings—Fast, Accurate, Built to Spec
Welcome to LinedPipe.com, the plastic-lined piping division of Marspec Technical Products—built for engineers,
maintenance teams, and plants that need corrosion resistance, reliable lead times, and a supplier who can handle
real-world requests without the runaround. We’re set up for quick turnaround pipe spools and fittings lined
with PTFE, PVDF, or polypropylene, with external pipe and fitting materials available in carbon steel or 304/316
stainless steel.
We’re also home to one of the most complete custom pipe spool fabrication facilities in the U.S., ready to
support custom-length pipe spools when your schedule (and your process) can’t wait.
Built for Corrosive, Hazardous, and High-Purity Service
Plastic-lined pipe is essential when you’re moving aggressive media—it’s often the difference between
stable operation and nonstop repairs. A properly specified lined piping system helps protect:
- Process integrity (reducing corrosion-related contamination)
- Plant uptime (fewer leak points and premature failures)
- Safety and compliance (better containment of harsh fluids)
If your business relies on conveying corrosive, toxic, or high-purity media—and you need pipe and fittings
that are designed to hold up—Marspec Technical Products is here to help.
Plastic-Lined Pipe Options: PTFE, PVDF, and Polypropylene
We support a range of lined piping needs, including fast-turn pipe spools and fittings lined with PTFE, PVDF, or polypropylene.
For many demanding chemical services, PTFE-lined pipe and fittings are a go-to solution. We offer 1/2 inch through
12 inch PTFE lined pipe and fittings in carbon steel and stainless steel, including standard and special configurations.
Our PTFE liners are produced using proprietary technology and high-quality resins, creating free-sintered liners
designed for strength and resistance to permeation. Liners are ram paste extruded or isostatically molded for
consistent dimensional accuracy and dependable performance in service.
Custom PTFE-Lined Pipe Spools with Fast Turnaround
Need spools made to your run? We fabricate custom-length PTFE-lined pipe spools with options that help installers
and operators in the field.
Spool highlights:
- Carbon steel pipe housings (A587, A106, or A53) with stainless available as an option
- Standard spools with two rotating flanges (fixed flanges available by request)
- Spool lengths specified up to 20 feet
Common add-ons and options:
- Grounding lugs for static charge control
- Extended vent couplings for critical services
- Special lugs for pipe support
Marspec has over 50 years of experience fabricating custom-length pipe spools, and we’re structured to respond
when your project is moving fast.
Your pipe is only as good as the fittings you pair it with. LinedPipe.com supports a broad range of PTFE-lined fittings, including:
- 90° elbows and 45° elbows
- Reducing elbows, reducing tees, reducing run tees
- Instrument tees (including lug body options)
- Crosses, laterals
- Concentric and eccentric reducers
- Blind flanges, reducing flanges (including specialty configurations)
Many fittings are produced with free-sintered liners and rotating flanges, with carbon steel standard and stainless
available on request.
Quality Standards, Traceability, and Spark Testing
When you’re specifying lined piping, quality standards matter—especially when systems carry aggressive chemicals
or high-purity media.
LinedPipe.com manufacturing and QA includes:
- Compliance with ASTM F1545 (Plastic Lined Ferrous Metal Pipe, Fittings and Flanges)
- Fittings conform dimensionally to ANSI B16.5
- Welds in compliance with ASME B31.3 and welders certified to Section IX of the ASME Boiler and Pressure Vessel Code
- Carbon steel components sandblasted and primed; special coatings available on request
- Minimum 10,000-volt spark testing to detect liner defects
- Identification bands and stamping for liner type and traceability
One Source for the Whole Lined Piping System
We aim to be your complete source for plastic-lined piping systems—so you can stop chasing multiple vendors for
components that need to work together.
We supply a range of lined valve types, including diaphragm, ball, plug, butterfly, check, and process sampling valves.
From strainers to sight flow indicators, PTFE expansion joints, PTFE spacers, mixing tees, and spectacle blinds,
we help you source the parts that make installations smoother and maintenance simpler.
We also supply vessel accessories such as dip tubes, spargers, nozzle liners, reactor sampling systems, and tank
bottom valves—designed to extend corrosion resistance into connected equipment.
For temperature-sensitive processes, we offer temperature maintenance options including:
- Heat transfer compounds
- Clamp-on steam piping heaters
- Electric tracing
- Fully jacketed pipe and fittings
We also provide services associated with lined systems, including custom PTFE machining and fluoropolymer powder coating.