MNA � Asia�s top four buyers of Iranian crude - China, India, Japan and South Korea - imported a total 710,699 barrels per day of crude from Iran in January, 49 percent lower than the same month in 2018, but it is more likely that Iran's oil export to these countries would double in Feb. 2019, the data collated by Thomson Reuters showed.

Buyers had to overcome shipping and payment issues which delayed the resumption of Iranian oil imports in Japan and South Korea. Iran is the fourth-largest oil producer in the Organization of the Petroleum Exporting Countries.

In January, Japan lifted its first Iranian oil cargo since the sanctions and the shipment is expected to arrive in February.

South Korea resumed imports of Iranian oil in January after a four-month hiatus, but its shipments were down 75 percent from the same month last year, data from the Korea National Oil Corp showed.

The third-largest buyer of Iranian oil in Asia has restricted its purchases to only condensate, an ultra-light oil used in producing naphtha for petrochemical production.

Imports by Japan and South Korea are set to pick up in the months up to May as buyers maximize the volume of oil they can lift during the waiver, trade sources said.

February imports into Asia are expected to nearly double to 1.38 million bpd, Refinitiv data showed.

Iran�s biggest customer China imported 377,038 bpd in January, down from more than 500,000 bpd in December. Still China�s January imports remained above the 360,000 bpd that Beijing can import under the waiver.