Piping Systems > Plastic Lined Pipe

PP (Polypropylene), PVDF (Kynar^®), PTFE (TEFLON^®), PFA (TEFLON^®)

PP (Polypropylene)

Features

Economical
Good resistance to many acids and bases
Not good for solvents
Brittle at low temperatures
Temperature to 225&degF (110&degC)

PTFE Teflon plastic lined steel and metal pipe

Common Industries

Water Treatment
Chemical Processing
Food and Beverage
Steel (pickling)
Power Generation

Common Applications

<30% HCl
<90% H2SO4
Sea Water / Brine
NaOH
Fruit Juices
Ultrapure Water
MEK
Diethanolamine

PVDF (Kynar^®)

Features

Excellent resistance to halogens and high strength acids
Avoid pH > (11)
Tough
Abrasion Resistant
High Thermal Expansion Coefficient
Temperature to 275&degF (135&degC)

PTFE Teflon plastic lined steel and metal pipe

Common Industries

Pulp & Paper
Chemical Processing
Electronic

Common Applications

ClO2
<90% H2SO4
Methyl Chloride
Chlorine
Bromine
90-98% H2SO4
30-35% HCl

PTFE (TEFLON^®)

Features

Virtually inert
Most versatile liner
Widest temperature range
Creeps under relatively low stress
Not melt processable
Temperature to 450&degF (230&degC)
Cryogenic up to 450&degF (235&degC)

PTFE Teflon plastic lined steel and metal pipe

Common Industries

Chemical Processing
Pharmaceutical

Common Applications

MECl
Aniline
Epichlorohydrin
Nitric Acid
Oleum
Nitrobenzene
Ethylene Oxide

PFA (TEFLON^®)

Features

Same performance characteristics as PTFE
Melt processable
Complex shapes
Weldable
Widely used in Electronics industry
Expensive
Cryogenic up to 450&degF (235&degC)

PTFE Teflon plastic lined steel and metal pipe

Common Industries

Chemical Processing
Pharmaceutical

Common Applications

MECl
Aniline
Epichlorohydrin
Nitric Acid
Oleum
Nitrobenzene
Ethylene Oxide