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 |