Untitled Document
 
 
 
 
Categories
Test items
Test condition
Results
Hose
Pneumatic Test
 Apply air pressure of 0.2Kg/ for 1 minutes
No leakage
Pressure resistance test
  Apply water pressure of 0.2Kg/ for 1 minutes
No abnormality
Tensile resistance test
Tensile strength
  Apply tensile load of 180Kg/ for 5 minutes
No abnormality
Air-tightness
  Apply air pressure of of 0.2Kg/ for 1 minutes after tensile test
No leakage
Shock Endurance test
Tube
Shock Endurance
  Drop steel ball with weight of 2kg from height of 1m
No abnormality
Air-tightness
  Apply air pressure of 0.2Kg/ for 1 minute after having performed shock test
No leakage
Nipple Fittings
Impact resistance
  Impact force of 135Kg/
No abnormality
Air-tightness
  Apply air pressure of 0.2Kg/ for 1 minute after having performed shock test
No leakage
Torsional strength Test
Twisting resistance moment
 Apply twisting through 90 20 times each to the left and right at the uniform speed of 10~20 second for each twist
No abnormality
Air-tightness
  Apply air pressure of 0.2Kg/ for 1 minute after the test
No leakage
Durability test
Repetitive adhesion
  8 times with the force of 280~570Kg/
No abnormality
Air-tightness
  Apply air pressure of 0.2Kg/ for 1 minute after repetitive adhesion test
No leakage
Heat- Resistant test
Heat- Resistance
  30 minutes under 118~122
No abnormality
Air-tightness
  Apply air pressure of 0.2Kg/ for 1 minute after Heat- Resistant test
No leakage
Stress - Corrosion Cracking Resistance test
Sedimentation
  4 times after having bent through 180 in the mixed solution of sodium chloride and sodium nitrite
No abnormality
Air-tightness
  Apply air pressure of 0.2Kg/ for 1 minute after sedimentation test
No leakage
Flux test
  Enable the air to flow due to the difference in the length of inlet pressure of 280mm H.O.
1.72
Bending force test
  Bend through 90
2.0
Bending test
Perform U-shaped bending 30 times each to the right and left at uniform speed of 10-20 seconds for each bending
No abnormality
Protective coating
Adhesion test
Bending test
  Bend through 180 15 times
No abnormality
Torsional strength Test
  Twist through 90 10 times
No abnormality
Solvent resistance
Detergent resistance
 2%n- lauric: 168 minutes at 35~45 of sodium benzene sulfonic solution
No abnormality
Edible oil resistance
  24 hours at 20~30 of soya oil
No abnormality
High temperature edible oil resistance
  10 seconds at 151~161 of soya oil
No abnormality
Vinegar resistance
  24 hours at 20~30of 45% aqueous solution of peracetic acid
No abnormality
Soap water resistance
 24 hours at 40~50 of 2% solution of sodium lauric acid
No abnormality
Chlorine bleaching agent resistance
168 hours at 40~50 of 0.2% aqueous solution of sodium hypochloride
No abnormality
Flammability
  heat for 5 seconds
No abnormality
Cold resistance

  Repeat 5 cycles each of bending through 180 under each of the conditions in the order of (70, 2 hours) - (room temperature, more than 30 minutes) - (5, 2 hours) - (room temperature, more than 30 minutes)

No abnormality
Weatherability
  Sunshine basic arc irradiation: 200 hours,
Continuous lighting up: 24~6 hours


Voltage: 49~51
No abnormality

Nipple
Fittings

Tensile resistance test
Room temperature
  Tensile strength of 100Kg, 5 minutes
No abnormality
High and low temperature
  60 and -5 Tensile strength of 65Kg, 5 minutes
No abnormality