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Combining the strength of steel with the corrosion resistance of plastics, these plastic lined steel products provide the best of both worlds.

Harrington carries the full line of DufLine Products

Plastic lined steel fittings
Plastic lined steel fittings
Plastic lined steel fittings

Lined Steel

Piping Products

The handling of highly corrosive and hazardous acids and solvents has certain processing requirements. To meet these requirements, Harrington carries the full line of DufLine products. 

Lined pipes and fittings are used in most Chemical, Petrochemical, Pulp and Paper Industry applications where hazardous acids and solvents are used in processing. Highly acidic and corrosive chemicals have a tendency to corrode and eat away non-lined steel piping. Lined piping systems are also used in the Food and Pharmaceutical Industry where the challenge is to maintain the highest levels of cleanability and durability.

Harrington has a complete line of pipe, fittings, valves and expansion joints with a variety of flanges and finishes. For questions regarding lined steel piping products, fill-in the contact form or call 1-800-213-4528.

The Harrington Difference
Providing over 60 years of exceptional service

Harrington is a leading DufLine distributor. Call our toll-free number at 1-800-213-4528 and you will be connected to a live person – not a recording. You can also use the contact form below for any questions regarding our full line of DufLine products.

The Strength of Steel
The corrosion resistance of plastics
DufLine Lined Steel Piping Products

Combining the strength of steel with the corrosion resistance of plastics, these plastic lined steel products provide the best of both worlds. Due to the inertness of PTFE to almost all chemicals and solvents, it acts as an effective barrier between the chemical and steel, not only protecting the conveying system, but also safeguarding the working environment. Corrosion engineers realize the long-term benefits associated with using high performance fluoropolymers to prevent corrosion in process piping systems. Lined systems are abrasion and wear resistant while maintaining non-stick and high purity characteristics.

A wide variety of chemicals can be used through a lined system, making it more versatile and economical for the long term. Due to the absence of corrosion, the life of the pipeline systems increases. PTFE lining safeguards and enhances better working conditions, reduces repair time and minimizes maintenance costs. Harrington carries a full line of plastic lined steel products available from 1″ to 12″ with PTFE, PP, PVDF or PFA liners and casing pipe of cast steel, stainless steel, or ductile iron.

DufLine PTFE-Lined

DufLine® PTFE

DufLine PP-Lined

PP LINED

DufLine PVDF-Lined

PVDF LINED

Product TypeInner LinersTemp Range
DufLine® PTFE Polytetrafluoroethylene ASTM D4894, D489Up to 500°F
PPPolypropylene Type II Copolymer ASTM D4101Up to 225°F
PVDFPolyvinylidene Fluoride ASTM D3222, D 5575Up to 275°F

Advantages

  • Pipe and Fittings are in full compliance with ASTM F 1545. Standard Specification for Plastic Lined Ferrous Metal Pipe, Fittings and Flanges
  • Increased piping system lifespan along with enhanced rust prevention
  • Save time and money from less downtime for maintenance and repairs
  • A wide variety of chemicals can be used through a TEFLON® (PTFE) lined system, making it more flexible and economical

Chemical Resistance

  • DufLine® PTFE – Provides superior chemical resistance against many aggressive chemicals and solvents within its continuous operating temperature
  • PP & PVDF – Available depending on chemical service application. Contact Harrington Technical Services for additional chemical resistance data.

Applications

Configurations

  • 45° & 90° Elbows
  • Equal Tees
  • Reducing Tees
  • Short Stack Tees
  • Instrument Tees
  • 45° Equal Lateral Tees
  • Equal Cross
  • Short Stack Cross
  • Concentric Reducer
  • Eccentric Reducer
  • Reducing Flanges
  • Blind Flanges
  • Spectacle Blind
  • Spacers
  • Valves
  • Solid Nozzle Liner
  • Flanged Pipe Spool
  • Instrument Tees
  • Expansion Joints
  • Double Flange Dip Pipe
DufLine Lined Steel Piping Products
DufLine Lined Steel Piping Products

Outer Casing Materials

  • 304 Stainless Steel
  • 316 Stainless Steel
  • Fabricated Steel 
  • Cast Steel 
  • Ductile Iron

Size Range

  • 1″ – 8″ – Piping Up To 20′ Length
  • 10″ – 12″ – Piping Up To 10′ Length

TÜV NORD Certified

  • ISO 9001:2008
  • ISO 14001:2004
  • BS OHSAS 1800:2007
Teflon, ASTM International

TEFLON® is a registered trademark of Chemours (former DuPont).

Buy your next DufLine product from Harrington and experience the difference.

Can’t find what you’re looking for?

Call our toll-free number at 1-800-213-4528 and you will be connected to a live person – not a recording. You can also use the contact form above for any questions regarding DufLine products.