Company History
“The World Best Dong-A Flexible Metal Tubes co., Ltd”
Established Dong-A Flexible Metal Tubes Co.,Ltd
Patent registration for machine for Metal flexible tube in Japan
Patent registration for Corrugated Stainless Steel Tube fittings in Japan
Exported the technology of Corrugated Stainless Steel Tube manufacturing and forming machine to Tru-Flex Corporation in U.S.A
Acquired a quality approval of gas tube from Korea Gas Safety Corporation
Acquired a sales approval of sprinkler flexible joint to the city of New York
Patent registration for Sprinkler Bracket in U.S.A
Acquired a RWTUV approval of flexible tube in Germany
Acquired an approval from Canadian Gas Association(C.G.A) & American Gas Association (A.G.A.)
Acquired an approval of sprinkler flexible joint from Korea Fire Equipment Inspection Corporation (KFI)
Acquired an approval of sprinkler flexible joint from Fire Equipment & Safety Center of Japan (FESC)
Acquired an approval of corrugated stainless steel tubes for city water system from Japan Water Works Association(JWWA)
Acquired a quality certification for fire protection fromUL(Underwriters Laboratories) in U.S.A.KSD3628
Acquired an approval for sprinkler flexible joint from Loss Prevention Certification Board (LPCB) in UK
Awarded for ‘the Most Promising Exporter for the year’ by Gyeonggi Export Assistance Center
Exported the technology of corrugated stainless steel tube manufacturing & forming machine to the Hitachi Metal Co. in Japan
Acquired a quality certification for NEP(New Excellent Product)
Acquired a certification for NET(New Excellent Technology)
Registered KS(Korean Standard) mark certification (KSD3628) for stainless steel flexible metal tube
Acquired an approval of sprinkler flexible joint from Factory Mutual (FM) in U.S.A
Acquired a certification as an Excellent Product from the Public Procurement Service
Registered KS mark certification (KSD3625) for stainless steel flexible metal tube for gas piping system
Patent registration for Sprinkler Flexible Joint in U.S.A
Patent registration for Sprinkler Flexible Joint in Japan
Acquired a quality certification from GOST in Russia
Expanded the new plant site
Acquired a quality certification from VdS(Verband der Schandenversicherer e. V) in Germany
Patent registration for fire-fighting sprinkler flexible joint in Germany
Awarded for ‘The Company of the Most Innovative Technology’
Acquired Permission of Gas tube installation in Ukraine
Acquired Conformity Certificate of Gas tube in Kazakhstan
Awarded for ‘the Most Promising Exporter for the year’ by Gyeonggi Export Assistance Center
Exported the technology of corrugated stainless steel tube manufacturing & forming machine to the Hitachi Metal Co. in Japan
FTA export approval for C/O(Certificate of Origin) management
Acquired a quality approval for drinking water supply component from KWWA(Korea Water Work Association)
Acquired a quality certification for Corrugated Stainless Steel Tube (CSST) for gas piping system from UPC(ANSI) in U.S.A
Patent Registration for Welding Equipment of CSST in U.S.A
Acquired a quality certification for CSST for gas piping system from CSA in Canada
Supply Contract with Home Depot in U.S.A for CSST for gas piping system
Patent registration for Stainless Steel Tube welding equipment in Japan
Patent registration for Helical type tube Connector in Japan
