The US naval blockade targeting Iranian oil exports could deal a meaningful blow to China, potentially removing more than one million barrels per day of heavily discounted crude from its supply, but it is well prepared to absorb any near-term disruptions, industry experts told.
China is the primary buyer of Iranian oil, accounting for up to 90% of the country's crude exports. The country is estimated to import between 1.1 million and 1.5 million barrels per day of Iranian oil, accounting for nearly 10% to 14% of its overall crude imports, as per projections shared by three sector analysts with.
In March, China's Iranian crude imports surged to 1.8 mmbbl/d as it aggressively built up inventories ahead of anticipated supply disruptions due to the escalation in the Middle East conflict, according to Neil Crosby, Head of Research at Sparta Commodities. Neil described China as the lifeline of the Iranian oil economy.
"While this volume is not systemically critical for the world's largest importer, it represents a highly attractive discounted supply stream that underpins margins for China's independent refiners. A disruption would therefore be less about physical shortage and more about cost inflation and margin compression across China's downstream sector," said Suvro Sarkar, Head of Energy Research at DBS, in an email to.
The US naval blockade of Iranian ports officially commenced Monday at 10:00 a.m. ET, an action Iran reportedly condemned as "an act of piracy."
Market experts have reportedly wondered whether the US blockade is also about indirectly pressuring Beijing, as the "black-market" for Iranian oil is largely driven by China.
"The blockade severely limits China's access to discounted black-market crude (alongside having already lost some access to Venezuelan) and forces a difficult pivot, as alternative overland pipelines from Russia are currently operating near maximum capacity and Venezuelan supplies are increasingly being diverted to American markets," Crosby said.
"So Beijing may be pressured into reshaping its supply chains exactly as Washington intends, forcing China to fill the gap by purchasing more crude directly from the United States or US-controlled channels at higher, standard market rates," he added.
According to independent energy markets consultant Dr. Mamdouh Salameh, China is the best prepared country among major economies to weather an oil supply shock, having built up an estimated 1.4 billion barrels of strategic and commercial crude reserves before the Iran conflict began.
"It is itself a producer of 4.5 million b/d and it has Russia its closest strategic ally as a trump card supplying it with a big chunk of its oil, liquefied natural gas, and gas needs via secure pipelines and also via the Northern Sea Route from the Russian Arctic," he said.
Salameh added that energy security is a top priority for China aimed at satisfying the needs of its economy, which is the world's largest by purchasing power parity, and about 37% larger than that of the United States as per International Monetary Fund data.
Echoing Salameh's sentiments, Sarkar said China has the capacity to absorb the supply shock in the short-term by drawing on its large strategic and commercial reserves that cover several months of imports and increasing purchases from alternative suppliers such as Russia, other Middle Eastern producers, and Brazil.
"However, replacing Iranian barrels comes at a premium, eroding the economic advantage Beijing has quietly accumulated through sanctioned trade channels. Over time, this could accelerate China's diversification strategy, deepen its energy ties with other exporters, and reinforce longer-term energy security measures, including accelerated electrification," Sarkar said.
Diplomatically, despite viewing the blockade as a coercive economic tool and an unwelcome precedent for enforcement against its supply chains, China is likely to avoid direct confrontation and instead frame its position around global stability, freedom of energy flows, while supporting negotiations without taking a leading role for now, Sarkar said.
"Rather than taking an aggressive or US-aligned mediating role, China is maintaining strategic ambiguity; its primary objective is simply to restore market stability and secure its energy supply without becoming deeply entangled in Middle Eastern conflicts, particularly ahead of the upcoming Trump-Xi summit scheduled for May 2026," Crosby said.
US and Iranian negotiators are reportedly considering returning to Pakistan for further talks as early as the coming weekend. Though US and Iranian mediators have signaled optimism regarding a de-escalation framework and resumption of talks, deep-seated friction over Iran's nuclear program continues to stall a final resolution.