manufactured · input

ISO Corner Castings (Malleable Iron)

ISO 1161-spec malleable iron corner fittings; 8 per 20-ft container; critical for stacking, locking, and crane lifting; Chinese foundries produce >80% of global supply; safety-critical with no approved alternative geometry

3

Source countries

4

Companies

1

Goods affected

0

Claims on record

What depends on it

Goods that need this input

1 essential American goods rely on iso corner castings (malleable iron) somewhere upstream in their supply chain.

Where it comes from

Source countries

Share of global supply, by country.

CountryShare of supply
CNChina82%
INIndia8%
DEGermany4%

Who makes it

Supplier companies

4 companies produce iso corner castings (malleable iron).

CIMC (China International Marine Containers)

HQ CN40% share

World's largest shipping container manufacturer; ~50% global new container production; Shenzhen listed; state-backed (COSCO holds major stake); also makes vehicles and energy equipment

China State Foundry (Container Fittings Division)

HQ CN30% share

Aggregate of Chinese state-affiliated foundries (Zhejiang, Jiangsu, Hebei provinces) producing ISO 1161 corner castings for captive and merchant supply. China's >80% global market share in corner castings is distributed across ~50-100 small-to-medium foundries with no single dominant independent producer.

Qingdao Xinhualian Steel Structure Co.

HQ CN8% share

Major Chinese producer of ISO 1161-spec container corner castings and steel components; exports to container manufacturers globally. One of the leading independent corner casting foundries in Shandong province.

Singamas Container Holdings

HQ SG5% share

Singapore-listed second-largest container manufacturer; ~15% global market; production entirely in China; supplies to Hapag-Lloyd, MSC, Evergreen and other major shipping lines