The flow of Iranian crude oil into Asia has slowed to a trickle following the expiry of US waivers given to Iran's largest crude and condensate buyers, but tanker players have said there has been little impact on the market.

India, Japan, South Korea, Taiwan and China were among the eight countries that were granted six-month waivers that allowed them to continue buying Iranian crude after the country’s oil industry was re-sanctioned by the US government late last year.