Excellent Product Designation Certificate [2016162]
(powder three-layer functional, Illite epoxy-coated steel pipe)
Excellent Product Designation Certificate [2018018]
(powder three-layer functional, Illite epoxy-coated steel pipe joints)
Green Technology Certificate
(No. GT-16-00069)
Green Technology Certificate
(100A-500A)
Green Technology Certificate
(600A-1600A)
Green Technology Certificate
(1650A-2600A)
Green Technology Certificate
(2700A-2800A)
Components and Materials Reliability Standard (RS) Certificate
(R-KORAS-2017-003)_
(Illite epoxy Ecolyte-TS)
Components and Materials Reliability Standard (RS) Certificate
(R-KCL-2014-004)_
(Epiwater 500)
Components and Materials Reliability Standard (RS) Certificate
(R-KORAS-2017-004)_(PUA #800)
KS Product Certificate
(coated steel pipe for water supply)
KS Product Certificate
(Coated steel pipe and deformed pipes for water supply)
KS Product Certificate
(powder deposit-type polyethylene clad steel pipe)
ISO 9001_2015 Certificate
ASME Certificate (U)
ASME Certificate (S)
ASME Certificate (PP)
Patent Certificate [No.10-0955583]
(Steel pipe coating device)
Patent Certificate [No.10-1106593]
(Steel pipe coating device with vegetable polyurethane paint)
Patent Certificate [No.10-1172988]
(Manhole equipped with an airflow guide hole)
Patent Certificate [No.10-1390514]
(Buoyancy prevention in manholes)
Patent Certificate [No.10-1402013]
(Environment-friendly steel pipe coated with vegetable paint and its manufacturing method)
Patent Certificate [No.10-1494721]
(Grit-blasting process)
Patent Certificate [No.10-1494724]
(Illite contained inside)