API 7k Casing Manual tong Product information 1. Structure of Casing Mannual Tongs Description The casing tongs are designed and manufactured in accordance with the API Spec 7K Specification for Drilling and Well Servicing Equipment and the National Standard for the Petroleum Gas Industry SY/T 5035 Elevator Links Elevators and Tongs which is a useful tool applied to make up and break out drill pipes, coupling hoop of the drill pipe joint casings casing hoops etc. When raise drill tool up and fall it down. Changing hinge jaws and handling shoulders of latch lug jaws can adjust the handling size of the tongs. 2. Main Features 1) API standard; 2) Very Good Quality; 3) After-sale Service.