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¡¤
Nov.1970 Sangjin Development Co.,Ltd was incorporated
ChungKu, Seoul
¡¤ Feb.1971 Acquired
electricity / utility construction license
¡¤ Jul. 1976
Erected boilers and auxiliary equipment for thermal
power station units NO.5,6 and 7 at Doha, Kuwait
¡¤ Oct.1979 Equipped
with grating manufacturing facility(NO.1auto projection
welding machine)
¡¤ Feb.1981 Launched
participating steel fabrication and erection works
in overseas construction projects(Bahrain)
¡¤ Jun.1984 Acquired
import and export license from Seoul Metropolitan
City
¡¤ Jan.1986 Exported
grating to Japan
¡¤ Jun.1986 Built
a new factory at Ansan Industrial Estate and extended
with NO.2 auto projection welding machine
¡¤ Apr.1988 Opened
Seoul trade office in Changkyo building,Seoul
¡¤ Jun.1988 Exported
auto projection grating welding machine to Thailand
¡¤ Jun.1988 Extension
with NO.1galvanizing plant
¡¤ Aug.1988 Extension
with NO.3 auto projection welding machines
¡¤ Feb.1989 Extension
with NO.4 auto projection welding machine(feeding
2 cross bars simultaneously)
¡¤ Apr.1989 Extension
with NO.2 galvanizing plant
¡¤ Dec.1990 Extension
with NO.3 galvanizing plant
¡¤ Sept.1991
Extension with NO.5 auto projection welding machine(feeding
2 cross bars simultaneously)
¡¤ Nov.1991 Bulit
a 2nd factory at Ansan Industrial Estate
¡¤ Jan.1994 Exported
Sangjin's auto projection grating welding machine
to Beijing,China
¡¤ Mar.1994 extension
with 6 lines of end bar auto welding machines
¡¤ Jun.1995 extension
with 2 lines of end bar auto welding machines
¡¤ Jun.1995 Exported
SANJIN's auto projection grating welding machine
to Malaysia
¡¤ Aug.1995 Extension
with NO.6,7 and 8 auto projection welding machines
¡¤ Nov.1996 Sangwon
Co.,Ltd. a subsidiary of Sangjin,commenced its hot
rolling mill operation producing steel bars
¡¤ Aug.2000 Sangjin
tech and research Co.,Ltd a subsidiary of Sangjin,commenced
its business producing noise barrier and guard rail
¡¤ Dec.2001 NO.1
galvanizing plant is renovated to use LNG.
¡¤ Jun.2002 NO.3
galvanizing plant is renovated to use LNG.
¡¤ Dec.2002 NO.2
galvanizing plant is renovated to use LNG.
¡¤ Oct.2002 Opened
SDI qingdao Co.,LTD,China
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