Taper Tap
Introduction
The taper tap is a special fishing tool making thread in tubular dropped objects such as drill pipe and tubing. It is a high effective tool in fishing of tubular dropped objects especially with union. The taper tap can be used for different fishing operation when equipped with left hand thread drill pipes and other tools. The taper taps are made from high strength alloy steel forging material and heat treated. It is made with chip groove so as to make threads.
Die Collar
Introduction
The die collar is a special external fishing tool which is tapping on the outside wall of tubing objects such as tubing and drill pipe.
The die collar is long cylindrical integral structure which is consisting of sub and tap body with threads in interior of cone as shown in the fig I. The die collar is made of high strength alloy ans is made with a cutting groove in the fishing threads.