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3LPE Coated Steel Pipes & Fittings
Valve Chamber
Expansion Joint
Contact
EN
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ABOUT
Certificates & Patents
Greetings
Vision
History
Organization Chart
Corporate Identity
Certificates
PR Materials
Menu
Greetings
Vision
History
Organization Chart
Corporate Identity
Certificates
PR Materials
GWANGSUNG’s
CERTIFICATES
Conformity Authentication (Mixed Epoxy Resin-coated Steel Pipe for Waterworks
Conformity Authentication (Mixed Epoxy Resin-coated Steel Fittings for Waterworks
ISO 14001
ISO 9001
Korea Certification (Coated Steel Pipes for Waterworks)
Korea Certification (Fittings of Coated Steel Pipes for Waterworks)
KS D 3565
(Coated steel pipes
for waterworks)
KS D 3578
(Fittings of coated steel
pipes for waterworks)
KS D 3607
(Polyethylene coated steel
pipes by powder fusion)
GWANGSUNG’s
PATENTS
Patent (Socket for Steel Pipe Connections)
Patent (Epoxy Resin and Coating Method for Steel Pipes)
Patent (PE 3-Layer and Epoxy Coating System)
Patent (Weld Control Method for Expanded Steel Pipes)
Patent (Eco cera poxy gold epoxy paint)
Patent (Valve chamber with height and slope adjustment and condensation prevention)
Patent (Manhole device for valve chamber with adjustment height and slope)