US Cash Crude-Grades steady as traders digest news of US-China tariff truce

May 12 (Reuters) - Physically traded domestic crude grades were broadly steady on Monday, dealers said, as market participants weighed news of a tariff truce between the U.S. and China, the world's two largest economies.

The U.S. will cut extra tariffs it imposed on Chinese imports in April this year to 30% from 145% and Chinese duties on U.S. imports will fall to 10% from 125% for the next 90 days.

On the supply side, U.S. oil refiners are expected to have about 689,000 barrels per day (bpd) of capacity offline in the week ending May 16, increasing available refining capacity by 520,000 bpd, research company IIR Energy said on Monday.

Offline capacity is expected to fall to 227,000 bpd in the week ending May 23, IIR added.

Meanwhile, the trading arm of Mexico's state company Pemex, PMI, is anticipating a reduction in crude oil exports this year as more will be sent to local refineries, especially the new Olmeca refinery, a company director said on Monday.

* Light Louisiana Sweet WTC-LLS for May delivery was steady at a midpoint of a $2.20 premium and was seen bid and offered between a $2.00 and $2.40 a barrel premium to U.S. crude futures CLc1

* Mars Sour WTC-MRS rose 5 cents to a midpoint of a $1.25 premium and was seen bid and offered between a $1.15 and $1.35 a barrel premium to U.S. crude futures CLc1

* WTI Midland WTC-WTM was steady at a midpoint of a 65-cent premium and was seen bid and offered between a 55-cent and 75-cent a barrel premium to U.S. crude futures CLc1

* West Texas Sour WTC-WTS rose 5 cents to a midpoint of a 20-cent discount and was seen bid and offered between a discount of 50 cents and 10-cent a barrel premium to U.S. crude futures CLc1

* WTI at East Houston WTC-MEH, also known as MEH, traded between a 80-cent and $1 a barrel premium to U.S. crude futures CLc1

* ICE Brent July futures LCOc1 rose $1.05 to settle at $64.96 a barrel

* WTI June crude CLc1 futures rose 93 cents to settle at $61.95 a barrel

* The Brent/WTI spread WTCLc1-LCOc1 widened 5 cents to last trade at minus $3.38, after hitting a high of minus $3.26 and a low of minus $3.39.