Okla. Stat. tit. 80, § 34.1

This state, its departments, boards, commission, institutions, and state agencies, political subdivisions, and school districts of the state may purchase, lease, or receive as gifts or donations, any surplus property offered for sale, lease, or donation by the United States Government or any of the agencies thereof, pursuant to the applicable provisions of the "Surplus Property Act of 1944", or amendments thereto, or any act providing for the disposal of surplus property enacted by the Congress of the United States. Laws requiring the state or any of its political subdivisions to purchase property, goods, wares, or merchandise under the terms of competitive bid statutes shall not apply to the purchase of surplus property as provided in this act.