shop-applied and have a minimum thickness of 3.00 mm 120 mils.
2.1.1.7
Adhesive-Thermoplastic Resin Coating
Exterior of pipe and fittings shall be cleaned and receive a factory
applied continuously extruded polyethylene coating with an adhesive
undercoat beneath the polyethylene coating. Coating system shall conform
to FS L-C-530. Coating thickness for pipe 114.60 mm 4.51 inches od and
larger shall be 0.90 mm 36 mils minimum. Coating thickness for pipe
smaller than 150 mm 6 inches shall be as specified in FS L-C-530.
Polyethylene coating shall be cut back 102 mm 4 inches on each end.
2.1.1.8
Fusion-Bonded Epoxy Coating
Exterior of pipe and fittings shall be cleaned and receive a factory
applied coating of fusion-bonded epoxy resin. Coating material shall be
sprayed on the heated pipe in a powder form. Epoxy coating system for
steel pipe shall conform to AWWA C213. Joints may be field epoxy coated as
specified in AWWA C213, or coated as specified in paragraph entitled
"Protection Against Corrosion (Field Applied)."
2.1.1.9
Field-Applied Corrosion Protection Materials
a.
Plastic Tape Material: Conform to FS L-T-1512, Type I, 0.25 mm 10
mils nominal thickness for pipe joints and Type II, 0.50 mm 20 mils
nominal thickness for repairing damaged areas of shop-applied
coatings.
b.
Coal Tar Base Coating: MIL-C-18480. Apply on flanges and other
irregular surfaces to a minimum dry-film thickness of 0.75 mm 30
mils.
2.1.2
Plastic Pipe, Fittings, Joints, and Jointing Materials
2.1.2.1
Reinforced Thermosetting Epoxy Resin (RTR)
RTR plastic pipe and fittings shall conform to ASTM D 2517 and have
adhesive joints. Adhesively join flanges to pipe at connections to
[valves] [metal accessories] [and] [metal pipe]. Adhesive for jointing
shall be in accordance with ASTM D 2517.
2.1.2.2
Thermoplastic (Polyethylene - PE)
PE pipe and heat fusion fittings shall conform to ASTM D 2513, Grade PE2406
or PE3408, SDR [_____]. Pipe and fittings shall have heat fusion joints,
except that approved mechanical crimp-type fittings conforming to paragraph
entitled "Mechanical Crimp-Type Fittings for PE Pipe," may be used for 9.50
mm 3/8 inch od to 50 mm 2 inch IPS sizes. PE pipe and fitting materials
for heat fusion shall be compatible to ensure uniform melting and a proper
bond.
2.1.3
Mechanical Crimp-Type Fittings for PE Pipe
Provide axial crimp-type mechanical fittings for 9.50 mm 3/8 inchod through
50 mm 2 inch IPS PE tubing and pipe in gas piping systems. Fittings shall
have plastic bodies with molded-in-place internal metal sleeves to fit the
inside diameter of the pipe and shall be assembled on the pipe with
nonremovable stainless steel axial crimping sleeves furnished as part of
the fitting. Tensile strength of fittings and fitting pull-out strength
SECTION 02551N
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