Drawing
3M™ Scotchrap™ Tapes 50, 51 & Pipe Primer, 3M™ Scotchfil™ Electrical Insulation Putty
2 of 4
Application of
Primer, Putty and
Tape, continued
For below ground installation adequate provision should be taken to protect the
coating from physical damage during pipe handling, lowering or backfilling operations.
The pipeline ditch should be free of rock or other sharp objects so the coated pipe
rests on a smooth bed of soil. Backfill materials should also be free of rock or other
sharp objects to avoid damage of the coating. After layer of debris-free soil has
covered the pipe, general backfill may be used.
Typical Properties Not for specifications. Values are typical, not to be considered minimum or maximum.
Properties measured at room temperature 73°F (23°C) unless otherwise stated.
3M™ Scotchrap™ Pipe Primer
Property
Typical Value US units (metric)
Color
Black
% Solids
30
Weight
7lbs. /gal. (0.84 kg/litre)
Coverage
@
1 mil
(
0,025 mm
)
dr
y
film thickness
700 sq. ft. /
g
al.
(
17.4 m
2
/litre
)
Drying Time
@ 75°F (24°C) and 50% RH 1 mil (0,025 mm)
dry film thickness
15 min.
Flash Point
19°F (-7.2°C)
3M™ Scotchfil™ Electrical Insulation Putty
Property
(
Test Method ASTM D-1000 unless otherwise stated
)
Typical Value
US units
(
metric
)
Color
Black
Thickness
125 mils
Elongation
1000% min.
Dielectric Strength
575 V/mil
Insulation Resistance
>1 x 10
6
Ω
3M™ Scotchrap™ Tapes 50 and 51, All-Weather Corrosion Protection Tapes
Property
(Test Method ASTM D-1000 unless otherwise
stated)
50 Tape
US units (metric)
51 Tape
US units (metric)
Classification Specification L-T-1512A
(Federal)
Type III Type II
Color - Backing
Black Black
Color – Adhesive
Black Black
Thickness
10 mils (0,254 mm) 20 mils (0,508 mm)
Elongation @ Break
10°F (-12°C)
74°F (23°C)
100%
200%
100%
150%
Breaking Strength
20 lb./in. (3,5 kN/m) 40 lb./in. (7,0 kN/m
Adhesion to Steel
10°F (-12°C)
74°F (23°C)
30 oz/in (0,328 kN/m)
20 oz./in (0,219 kN/m)
30 oz/in (0,328 kN/m)
20 oz./in (0,219 kN/m)
Adhesion to Backing
10°F (-12°C)
74°F (23°C)
30 oz/in (0,328 kN/m)
20 oz./in (0,219 kN/m)
30 oz/in (0,328 kN/m)
20 oz./in (0,219 kN/m)
Roll Unwind
10°F (-12°C)
74°F (23°C)
16 oz/in (0,175 kN/m)
16 oz/in (0,175 kN/m)
16 oz/in (0,175 kN/m)
16 oz/in (0,175 kN/m)