A. Puncture resistance – 2,571.6 N/cm 262.2 kgf/cm
Since KSP and ASTM are doing the same method to test, Is this puncture resistance tested
via ASTMD4833 or a CBR Puncture test?
Puncture resistance 2,571.6 N/cm is 262.2 kgf/cm, it is same data.
I didn't compare the KPS and ASTM exactly but I heard from Lab tester, KPS was made with reference to the ASTM.
(I have attached KPS standard of test but it is written in Korean. If I have, I will send you KPS written in English later.)
KPS standard was made in 1998, at that time Korea government didn't have any information
(installation, Testing and inspection of products) for HDPE Sheet and landfill.
It was impossible to make new standard and the other ASTM in Korea.
B. Is this the first time to fail the test since you purchase our product?
Did all purchased products in the past had been passed the same test in Korea?
I have discussed the failure test with Mr Tak who you have met before in our office.
He said that we have many experiences of failure tests, approximately 40% of the test was failed
and as well as GSE, almost all products has this problem.
When we had failure data, we did test again with another sample until to pass.
The last time you fail the test using our GSE products, how have you done to pass the test? Receiving samples
from us and test them again as same as this time we are trying to?
SinSin has been supplied many products of GSE for 20years and we used only products of GSE.
During that time, we had a lot of tests(passed or failed) but I don't have the information that when it
failed how managed it. I guess the project manager did retest with a new sample on sight when it failed.
I had twice of test after I took a this item, first test was passed and the other was failed.
I would like to send you detailed and various information but that is all information I have.
I was surprised when heard the failure of 40% form Mr. Tac and also wonder reason of failure.
Preparing passed the last test report , I will send you soon.
Anyway, Retest is more important than past tests to me.
As soon as possible I would like to get new samples which it was tested sufficiently.
C. If possible, please send me the test results of our GSE products one result for pass and one result for fail.
I am preparing, I will send you later.
Thank you for your help on this matter, and hope the above information helps you to understand more