IntegralLifting Sub

IntegralLifting Sub is the specialtools for lifting of the drilltools in petroleum, natural gas industry andgeologic exploration.The drill tool lifting sub is divided into a or b typestructure.The a type has 18 degree shoulder, the b type has 90degreeshoulder.The lifting sub can be selected according to elevator’s structure. Theintegral lifting subs are made of high strength alloy steel. All connectionsare complied with API standard.