Latest Update
Mainline plant applied coatings: 2 layer PE, 3 layer PE, FBE, Tapes, Coal tar enamel,
Asphalt, Insulated, Concrete
PE= Polyethelene
Polyethelene (PE) extruded by Side extrusion for large diameter pipe and crosshead
extrusion
FBE Characteristics (Fusion Bonded Epoxy) Green or red
looks like painted finish
single layer or dual power (2 layer)
DFT 10-20mils
FBE application process Pre heat pipe, grit or shot blast to Nace 2/ SSPC SP 10, optional
acid bath, heat pipe to specified temp, apply FBE coating, cure, fresh water bath, stencil.
Advantages of Coat Tar Enamel Ease of application & long life in some environments
Disadvantages of Coat Tar Enamel Corrosion and damage from soil stress, environmental
and exposure concerns, use of coal is regulated in some locations.
, Application process for Coal Tar Enamel (CTE) Prime the pipe, apply CTE dope, wrap
with glass fiber mat, apply more CTE dope, 2nd layer of glass mat, apply outer wrap of coal tar
impregnated glass fiber felt, cool the application.
Concrete coating characteristics: Used in conjunction with other coating (ie FBE), reduces
buoyancy so pipe will sink, applied in many thicknesses, can be applied to any diameter of pipe
Field Joint Coatings: Heat shrink sleeves, insulation half shells, field foam, liquid epoxy,
cold applied tapes, hot applied tapes, FBE field joints, petrolatum (wax) tapes.
Non Distructive heat shrink sleeve test- Visual inspection, physical inspection, holiday
detection
Destructive test for heat shrink sleeves Holiday testing (voltage set too high) and peel test
(1" wide strip cut and pulled from the pipe)
Repairing FBE FBE melt sticks, Liquid epoxy, repair patch or heat shrink sleeve
Reasons to paint wood decoration, protection, sealing stabilization, preservation and flame
retardance
Non Ferrous Substrates include: stainless steel, nickel, copper/nickel alloys, aluminum,
aluminum bronzes, copper, bronzes, brass, tin, cadmium, lead, magnesium, zinc