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- 1949. 01
- Established in the name of CHOSUN STEEL WIRE INDUSTRY Ltd. by the late founder, Jang, Kyung-ho (in Choryang-dong Nam-gu, Busan)
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1960s
- 1962. 06Moved to a larger factory located in Uam-dong Nam-gu, Busan
- 1965. 04Established manufacturing facility for covered arc welding electrodes
- 1965. 11Certified by the Korea Register of Shipping (KR) for covered electrodes
- 1966. 06Certified by the Bureau Veritas (BV) for covered electrodes
- 1966. 11Certified by the American Bureau of Shipping (ABS) for covered electrodes
- 1967. 06Acquired the “KS” (Korea Industrial Standards) mark for covered electrodes for mild steel
- 1969. 04Established the 1st technological alliance with Japan’s Kobe Steel (for covered electrodes)
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1970s
- 1970. 11Certified by the Lloyd’s Register (LR) for covered electrodes
- 1973. 08Established and expanded the manufacture factory for covered electrodes
- 1973. 12Established the 2nd technological alliance with Kobe Steel (low hydrogen type and high efficient covered lectrodes)
- 1974. 06Certified by the Nippon Kaiji Kyokai (NK) for covered electrodes
- 1974. 07Introduced from Kobe Steel (mechanized, continuous automated facility for covered electrodes manufacturing)
- 1975. 10Established solid wire manufacturing facilities for submerged and MAG welding
- 1975. 12Merger and acquisition of Dongkuk Steel Mill (Seoul factory) and IPO
Established the 3rd technological alliance with Kobe Steel (for welding wire)
- 1976. 07Certified by the Det Norske Veritas (DNV) for welding materials
- 1977. 03Company name changed from CHOSUN STEEL WIRE INDUSTRY Ltd. to CHOSUN STEEL WIRE Ltd.
- 1977. 08Certified by the Germanischer Lloyd (GL) for welding material
- 1977. 09Installed more manufacturing facilities for welding wire
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1980s
- 1980. 03Certified by the ABS and the DNV for stainless steel covered electrodes
- 1980. 12Built additional autonomous manufacturing facilities for covered electrodes
- 1981. 12Introduced ASME (American Society of Mechanical Engineers)
- 1984. 06Acquired the Japanese Industrial Standards (JIS) mark for covered electrodes for mild steel and high strength steel and solid wire for MAG welding (JIS Z3211, Z3212, Z3312)
- 1986. 08Installed additional solid wire manufacturing facilities for MAG welding
- 1987. 04Established a solid wire manufacturing factory for MAG welding in Pohang
- 1987. 07Established the CHOSUN WELDING R&D Center
- 1987. 09Established manufacturing facilities for stainless steel wire
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1990s
- 1992. 07Moved the wire rods line to Pohang factory
- 1995. 04Established a flux cored wire factory in Onsan
- 1995. 05Acquired the ISO 9001 quality management system certification (DNV)
- 1995. 08Moved the head office building (to Chosun bd. Yeoksam-dong Gangnam-gu)
- 1995. 10Installed more flux cored wire facilities at Onsan factory
- 1995. 11Established flux manufacturing facilities for submerged arc welding at Onsan factory
- 1996. 07Acquired the JIS mark for Pohang factory (JIS Z3312)
- 1997. 04Acquired flux cored wire class (ABS,BV,DNV,GL,KR,LR,NK) for mild steel and high strength steel
- 1998. 10Acquired the JIS mark for flux cored wire (JIS Z3313)
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2000s
- 2000. 06Moved manufacturing facilities for covered electrodes from Busan to Pohang
- 2000. 08Moved manufacturing facilities for stainless steel wire from Busan to Pohang
- 2001. 01Seperated from Dongkuk Steel Mill Group
- 2001. 03Installed more manufacturing facilities for flux cored wire at Onsan
Acquired flux cored wire class (ABS,BV,DNV,GL,KR,LR,NK) for stainless steel
- 2001. 04Certified by the Canadian Welding Bureau (CWB) for covered electrodes and flux cored wire
- 2001. 12Moved the Head office of CHOSUN WELDING from Seoul to Pohang
- 2002. 10Installed more mixing facilities for SAW flux at Onsan (10 model)
- 2002. 12Established the 2nd factory building at Onsan
Installed more manufacturing facilities or flux cored wire at Onsan factory
Established a new manufacturing facility exclusive for stainless steel flux cored wire
- 2003. 03Developed flux cored wire for low alloy heat resistant steel and weathering steel
- 2004. 01Developed flux cored wire for low temperature
- 2004. 06Developed flux cored wire for hardfacing
- 2004. 07Developed flux cored wire for Duplex stainless steel
Developed flux cored wire for weathering steel
Changed company’s English name (from CHOSUN STEEL WIRE CO., LTD. → CHOSUN WELDING CO., LTD.)
- 2004. 10Acquired flux cored wire class (ABS,BV,DNV,GL,KR,LR,NK) for low temperature steel
- 2005. 01Implemented ERP(SAP R3) system
- 2005. 02Acquired the JIS mark for restatement (JIS Z3211, Z3212)
- 2005. 12Developed stainless steel flux cored wire for extremely low temperature (-196℃)
- 2006. 06Developed 2 Pole high heat input EGW product
- 2006. 09Developed flux cored wire for sulphuric acid corrosion resistant steel
- 2006. 12Developed flux cored wire with 2Y and 3Y combined grade
2Acquired the New Excellent Product (NEP) mark for flux cored wire with 2Y and 3Y combined grade (product name : CSF-71S)
- 2007. 01Installed more manufacturing facilities for flux cored wire at Onsan factory
- 2007. 05Developed flux cored wire for car mufflers (409Ti)
Established an overseas branch, CHOSUN VINA CO., LTD. (Ho Chi Minh, Vietnam)
- 2008. 12Developed flux cored wire for car mufflers (439)
- 2009. 06Developed covered electrodes for nickel based alloys
- 2009. 07Established an overseas branch, CHOSUN WELDING JAPAN CO., LTD. (Osaka, Japan)
- 2009. 10Implemented MES (Manufacturing Execution System) System
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2010s
- 2010. 01Changed into a holding company structure (holding company:CS HOLDINGS CO., LTD., Subsidiaries : CHOSUN WELDING POHANG CO., LTD., CHOSUN WELDING CO., LTD., CHOSUN VINA CO., LTD., CHOSUN WELDING JAPAN CO., LTD.)
- 2010. 10Developed Super Duplex stainless flux cored wire
- 2011. 03Incorporated DONG YANG METAL CO., LTD. into CS HOLDINGS CO., LTD. as subsidiary
- 2011. 04Acquired the KS mark for flux cored wire (KS D7104)
- 2011. 12Developed flux cored wire for 9%Cr-1%Mo steel (CSF-91B9)
- 2013. 02Acquired the JIS mark for submerged arc welding flux (JIS Z3351)
