광안대교 그 밧줄, 일본 쇠로 시작해 세계 80개 나라가 사 가는 진짜 이유
일등경제
63,619 views
#KoryoSteel #GwanganBridge #Rope #Busan #POSCO
A single company in Busan produced the 11,544 strands of steel cables that hold up the Gwangan Bridge. This company, which once couldn't sell a single cable in Tokyo because it imported all its steel from Japan, is now being purchased by over 80 countries. We follow the real reason behind this.
Korea Steel #GwanganBridge #Rope #BuyIn ⏱ Table of Contents
0:00 Opening
1:03 The Office Opened in Tokyo
3:15 Was the Technology Insufficient?
5:42 Steel That Breaks When Stretched
8:04 The Decision of 1983
10:45 Into the Car Engine
12:44 That Rope of Gwangan Bridge
15:03 The White Powder on American Bridges
17:27 The World's Longest Bridge
20:09 How Much Will Be Sold in Japan?
22:54 Wrap-up
📌 Topics Covered in This Video
A Busan rope company that opened a sales office in Tokyo in 1980 but was unable to conduct business in Japan; winning the Presidential Award on Export Day that same year
The circumstances of purchasing all the steel (wire rod) for rope making from Japanese steel companies until 1980
The story of the early Pohang steel that broke when stretched; testing it by cutting coils into 100 pieces and sending monthly reports
In 1983, cutting off business for one year with the Japanese company that supplied 100% of the steel; Pohang A Decision Relying Solely on Steel
Becoming the fifth company to install steel cables in automobile engine springs, a feat previously accomplished by only four companies worldwide
11,544 strands of steel wire used in a single main cable of the Gwangan Bridge
White rust at the construction site of the Tacoma Narrows Bridge in the U.S. in 2005
From the Yi Sun-sin Bridge to the Çanakkale Bridge, the world's longest suspension bridge
Selling globally through a Swiss joint venture and a Japanese sales subsidiary, and China chasing after us
🔗 Main Sources
POSCO Newsroom — Stories I Want to Leave Behind 61, Hong Young-chul, Chairman of Korea Steel, 36 Years with POSCO (2016)
Korea Steel — 68th Fiscal Year Business Report (Submitted March 2026)
Korean Society of Bridge and Structural Engineers — Installation of Cables for Gwangan-daero Suspension Bridge
ENR — Some Tacoma Narrows Bridge Cable Wires Are Corroded
POSCO Newsroom — The World's Longest Suspension Bridge, Çanakkale Bridge, Finally Opened! But is POSCO steel here too?
Other references
Busan History and Culture Encyclopedia entry on Koryo Steel, Steel & Metal News special feature commemorating Honorary Chairman Hong Jong-yeol, Edaily report on POSCO and Koryo Steel's cumulative trading volume reaching 10 million tons, The Spokesman-Review report on Tacoma Bridge steel wire, HistoryLink opening of the new Tacoma Bridge, Wikipedia Gwangan Bridge and Yi Sun-sin Bridge, Policy Briefing development of next-generation steel for super-large structures, Edaily report on Yi Sun-sin Bridge, Etoday report on Yi Sun-sin Bridge, Seoul Shinmun and Segye Ilbo reports on Çanakkale Bridge, Business Excellence 1915 Çanakkale Bridge, Steel & Metal News report on Çanakkale wire rod, Chinese Wikipedia Nansha Bridge, Pengpai News Zhangjinggao Yangtze River Bridge, Koryo Steel Company Profile Wire Connects the World.
🔔 If you are curious about the money stories behind the everyday objects you see, even if you don't know their names, please join us by subscribing and liking.
4 Comments
광안대교 그 밧줄, 일본 쇠로 시작해 세계 80개 나라가 사 가는 진짜 이유
일등경제
63,619 views
#KoryoSteel #GwanganBridge #Rope #Busan #POSCO
A single company in Busan produced the 11,544 strands of steel cables that hold up the Gwangan Bridge. This company, which once couldn't sell a single cable in Tokyo because it imported all its steel from Japan, is now being purchased by over 80 countries. We follow the real reason behind this.
Korea Steel #GwanganBridge #Rope #BuyIn ⏱ Table of Contents
0:00 Opening
1:03 The Office Opened in Tokyo
3:15 Was the Technology Insufficient?
5:42 Steel That Breaks When Stretched
8:04 The Decision of 1983
10:45 Into the Car Engine
12:44 That Rope of Gwangan Bridge
15:03 The White Powder on American Bridges
17:27 The World's Longest Bridge
20:09 How Much Will Be Sold in Japan?
22:54 Wrap-up
📌 Topics Covered in This Video
A Busan rope company that opened a sales office in Tokyo in 1980 but was unable to conduct business in Japan; winning the Presidential Award on Export Day that same year
The circumstances of purchasing all the steel (wire rod) for rope making from Japanese steel companies until 1980
The story of the early Pohang steel that broke when stretched; testing it by cutting coils into 100 pieces and sending monthly reports
In 1983, cutting off business for one year with the Japanese company that supplied 100% of the steel; Pohang A Decision Relying Solely on Steel
Becoming the fifth company to install steel cables in automobile engine springs, a feat previously accomplished by only four companies worldwide
11,544 strands of steel wire used in a single main cable of the Gwangan Bridge
White rust at the construction site of the Tacoma Narrows Bridge in the U.S. in 2005
From the Yi Sun-sin Bridge to the Çanakkale Bridge, the world's longest suspension bridge
Selling globally through a Swiss joint venture and a Japanese sales subsidiary, and China chasing after us
🔗 Main Sources
POSCO Newsroom — Stories I Want to Leave Behind 61, Hong Young-chul, Chairman of Korea Steel, 36 Years with POSCO (2016)
Korea Steel — 68th Fiscal Year Business Report (Submitted March 2026)
Korean Society of Bridge and Structural Engineers — Installation of Cables for Gwangan-daero Suspension Bridge
ENR — Some Tacoma Narrows Bridge Cable Wires Are Corroded
POSCO Newsroom — The World's Longest Suspension Bridge, Çanakkale Bridge, Finally Opened! But is POSCO steel here too?
Other references
Busan History and Culture Encyclopedia entry on Koryo Steel, Steel & Metal News special feature commemorating Honorary Chairman Hong Jong-yeol, Edaily report on POSCO and Koryo Steel's cumulative trading volume reaching 10 million tons, The Spokesman-Review report on Tacoma Bridge steel wire, HistoryLink opening of the new Tacoma Bridge, Wikipedia Gwangan Bridge and Yi Sun-sin Bridge, Policy Briefing development of next-generation steel for super-large structures, Edaily report on Yi Sun-sin Bridge, Etoday report on Yi Sun-sin Bridge, Seoul Shinmun and Segye Ilbo reports on Çanakkale Bridge, Business Excellence 1915 Çanakkale Bridge, Steel & Metal News report on Çanakkale wire rod, Chinese Wikipedia Nansha Bridge, Pengpai News Zhangjinggao Yangtze River Bridge, Koryo Steel Company Profile Wire Connects the World.
🔔 If you are curious about the money stories behind the everyday objects you see, even if you don't know their names, please join us by subscribing and liking.