We show the highest quality with know-how and technology unique to Cheongwoo.
Business Introduction
Cheongwoo is a leading company that creates the myth of the steel structure field based on Korea's largest CG composite beam production facilityand
the best technology with management principle spearheading changing trends.
Business Overview
Until now, the method of construction has been carried out in a labor-intensive manner, such as installing formwork for steel frame assembly and concrete pouring in the site. However, in addition to the labor shortage in the field, such as the aging of skilled technicians and the reduction in youth inflow, the introduction of new methods to compensate for these shortcomings was inevitable due to the weakness of the safety, climate and other external environmental constraints.

Cheongwoo’s CG method is evaluated by the consumer as a groundbreaking construction method that compensates for the shortcomings of the existing method and is mass-produced in the factory and assembled at the construction site, reducing construction time and costs ensuring seismic resistance, fire resistance and safety.
Promotion Plan
Based on four patents of CG Method, Cheongwoo expanded its Sacheon factory by 119,975㎡ in 2019 with a sales growth of more than 35% per year, starting with the 19,323 ㎡ Haman factory in 2013 in line with rapidly changing architectural trends. With 254 kinds of machinery such as laser cutters on a large site of 139,298㎡, we are ready to meet the growing demand and continue to grow to make the leap to midsize business with sales of KRW 162.7 billion in 2025.
Operating Result
Recent Sales Record (in Million KRW)
2017 2018 2019 2020
6,895 16,476 19,014 41,200
운영실적표
Construction Method Comparison
CG Column
(Composite Girder Column)		 FAC
(Forming Angle Composite)		 F-CFT
(Forming Angle Concrete Filled Tube)
CG 합성보
FAC pillars, connecting side by side to
F-CFT columns, serves as floor surfaces
(concrete floor-to-floor)
FAC
Composite columns pre-assembled in the factory by welding forming angles and strip beam.
For the first to third floors, 10 to 20 M sizes,
stand in a row, and connect the pillars CG beams horizontally to form a layer,
and formwork constructed in the site.
(Concrete pillar role)
F-CFT
Concrete-filled composite pillar beams and pillars assembled using forming angles and metal sheet.
No need to install formwork.
For the first to third floors, 10 to 20 M sizes,
stand in a row, and connect the pillars CG beams horizontally to form a layer,
and formwork constructed in the site.
(Concrete pillar role)
Compared to steel concrete construction, 1/3 of construction period and cost reduced, 70% reduction in field personnel is achieved,
and can solve the external environmental effects such as aging of skilled technicians, reduction of youth inflow, climate, seismic resistance, strong safety, and can increase space utilization by extending the distance between pillars.
Patent right (General License)
  • 특허증1
  • 특허증2
  • 특허증3
Construction Method Comparison
R.C. Method P.C. Method SRC Method Normal Steel Structure CG Method
Steel Quantity Rebar 100% Pre-cast H-Beam+Rebar 140% H-Beam 150% RFC Piller+CG
Composite 105%
Formwork Euro Form 100% None Euro Form 100% None Pillar Formwork 30%%
Concrete 100% 120% 80% None 70%
Foundation 100% 100% 100% 80% 85%
Slab Normal Slab100% PC Slab100% Deck Plate 100% Deck Plate 100% Deck Plate 100%
Support Two Line Scaffolding 100% None None None None
Framing Amount 100% 105% 120% 130% 100%
Pictures R.C공법 PC공법 SRC공법 일반철골 CG공법
This is an example of the construction of Cheongwoo,
which has been praised for its reduced construction period and costs,
safety and seismic resistance with new building materials such as
CG composite beams that combine the advantages of steel and concrete.