http://www.alibaba.com/rss/product_search/oil drilling rig.rss Marketplace of export & import, offers company directory, catalog, trade leads to importer, exporter, manufacturer, wholesaler. en-us alibaba http://www.alibaba.com/product-gs/278152844/oil_drilling_rig.html Top drive drilling machine is one of the greatest technological revolutions of petroleum equipment, used to replace rotary table http://www.alibaba.com/product-gs/276792228/API_petroleum_drilling_rig_equipment.html drilling equipment conforms API Spec. 4F, 7K, 8A,and it has been exported to many countries http://www.alibaba.com/product-gs/279141938/Supply_Drilling_and_Wellhead_Equipment.html 1)Rated Pressure:2000psi~15000psi <br>2)Nominal Bore:2.1/16"~7.1/16" <br>3)Temperature:-60C~121C <br>Drilling and Wellhead Equipment