Tungsten ores - Import export

Drillstar Industries washover shoes (also known as rotary shoes or mill shoes) are available in a wide range of dimensions and threads. They come in 12 types, each designed for a specific application. The design chosen will depend on the material to mill, and on whether the shoe should cut on the bottom, on the OD, on the ID or on any combination of these. These tools have an extended lifespan due to the special treatment applied before hardfacing. They can be stabilized upon request. Shoes can be dressed with your choice of TOPLOY or custom hardfacing (tungsten carbide cutting plates, etc.)

Section mills are designed for cutting and milling a complete section of casing. All models 4 1/2 in. OD and above are equipped with 2 sets of 3 knives: 1 long set and 1 short set, designed for first cutting and then milling the casing. Knives can be hardfaced with your choice of TOPLOY carbide grains or TOPMILL/SWORDFISH tungsten carbide inserts. For most jobs, TOPMILL inserts are strongly recommended to improve milling performance. This tool can be equipped with Flo-tel, which produces a sudden drop in mud pressure when the pipe is cut out, indicating the right time to start applying milling weight.