NEW YORK — In a preliminary determination in a countervailing duty administrative review of imports of oil country tubular goods from China from Jan. 1 to Dec. 31, 2011, the Commerce Department’s International Trade Administration (ITA) has set a net subsidy rate of 7.33 percent for Wuxi Seamless Oil Pipe Co. Ltd. and 1.84 percent for Jiangsu Chengde Steel Tube Share Co. Ltd.