Volume-II of IV - GAIL

Property Test
Method
Condition Requirement
Peel Strength
DIN 30672 23°C. CHS* 200 N/cm minimum
After immersion for 4 weeks
at 23°C~NaOH pH12 H2SO4
pH2 ground water solution:-
1.2% H3PO4
1.6% KOH
1.2NaCl
1.0% Fe2O3
100 mm/ min.
Peel Strength after
DIN 30672 23°C. CHS* 60 N/cm minimum
conditioning for 30
cycles from -30°C to 60°C
100 mm/ min.
Shear strength ISO 4587 23°C. CHS*
50 mm/ min.
Corrosive effect ASTM D 120°C.
2671 16 hrs.
3.2.3 Primer Material
200 N/cm 2 minimum
No corrosion
Property Test Method Condition Requirement
Density ASTM D1084 23 +/- 0.5 0 C
Part A: 2 rpm, spindle #6
Part B: 20rpm, spindle #3
Part A: 60+/- 30 Pas
Part B: 1.55+/-0.55 Pas
Mixing ratio By weight 23°C 100:40
By volume
100:60
Shear strength ISO 4587 23°C. CHS*
50 mm/ min.
1000 N/cm 2 minimum
* CHS = Cross Head Speed
3.2.4 Functional Properties
Sl.
No.
Property Test Method Condition Requirement
a) Impact
DIN 30672 23°C. No holidays when tested
resistance
Class C at 20 KV
b) Penetration DIN 30672 60°C. Minimum 70% of original
resistance
Class C resistance thickness left;
no holidays when tested
at 20 KV
c) Specific coating DIN 30672 23°C. 10
resistance
8 Ohm sq. m minimum;
no oxidation on pipe
surface
d) Cathodic
ASTM G42 60°C. 15 mm increase in radius
disbondment
resistance
30 days of disbondment max.
e) Resistance to
split
propagation
TEST METHOD-
1 *
No cut propagation
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