Test  methods and conditions

Requirement

B5.3.2Appearance

According to YD/T590-1 requirements
The sleeve shall be homogenous and free of flaws, defects, pinholes, bubbles, cracks or inclusions visible with the unaided eye.

No defects which will affect the product performance

B5.3.3 Tightness test

According to YD/T590-1 requirements
Immerse in water bath at
Temp: 23±3℃ Time:15 min
Internal Regulated
Pressure: 70±2Kpa

No leakage

B5.3.4 Temperature cycling test

According to YD/T590-1 requirements
Highest Temp: 60±2℃
Lowest temp: -30℃±2℃
Dwell time: 4hours
Transition time: 2 hours
Cycle duration; 12 hours
Internal regulated
Pressure; 70±2Kpa
Number of cycles: 10

Tightness as per 5.3.3

B5.3.5
High temperature tightness test

According to YD/T590-1-5.5 requirements Temp: 60±2℃
Pressure; 70±2Kpa
Time: 168h

Tightness as per 5.3.3

B5.3.6 Axial tension test

According to YD/T590-1-5.6 requirements
Time: 8 hours each cable
Load: D/45×1000N
(700N±10N max)
Internal Regulated
Pressure: 70±2Kpa

Tightness as per 5.3.3

B5.3.7 Bending test

According to YD/T590-1-5.7 requirements Clamping distance: 10×D from closure edge(min 250 mm)
Force: max 500N or 45 deg
Bend. Internal regulated
Pressure: 70±2Kpa
Bending cycle: 2
cable cycle: bend cable & hold for 5 minutes, bring to normal & bend in opposite direction, hold 5 minutes & bring to normal position

Tightness as per 5.3.3

B5.3.8 Tension test

According to YD/T590-1-5.7 requirements Torque: 50 Nm. Or 90 deg rotation
Clamping distance: 10×D from closure edge(D=outer dia Of cable)
2 complete torsion cycles per cable. Internal regulated Pressure: 70±2Kpa
cycle: Twist cable and hold for 5 minutes; bring cable back to starting position

Tightness as per 5.3.3

B5.3.10 Static Load test

According to YD/T590-1-5.7 requirements Load: 1000N/5sq cm
Load application: 90° from seam, Int, regulated pressure: 70±2Kpa
Time: 5 min remove load, turn sample through 180°, reapply load for 5 min

Tightness as per 5.3.3

B5.3.11
Impact test
Steel ball test

According to YD/T590-1-5.7 requirements
steel ball
Weight: 1Kg Drop height 1m
Impact: 90Deg. From seam
(sleeve middle)
Internal regulated
Pressure: 70±2Kpa
Temp: -15℃
Internal regulated
Pressure: 70±2Kpa
(Channel closing)

Tightness as per 5.3.3

B5.3.12
Vibration test

According to YD/T590-1-5.7 requirements Vibration: 10Hz
Amplitude: 3mm (6mm peak to peak)
Time: 6 days
Clamping distance:10×D from closure edge.(D=the cable outer dia)
Internal regulated
Pressure: 70±2Kpa

Tightness as per 5.3.3

B5.3.13
Resistance to stress cracking

According to YD/T590-1-5.7 requirements
Test temp: 50±2℃
Internal regulated pressure: 70±2Kpa
Test medium: 10% igepal
Solution test time: 7 days

Tightness as per 5.3.3