Though their importance is often underestimated, tubes play an important role in DTH drilling -- regardless of application, rock type, hole depth, or drill rig. Secoroc tubes are made from cold drawn tubing, providing a superior surface finish and tolerance compared to their hot-rolled counterparts.
Traditionally the threads and the joint between the tube and the end-pieces are vulnerable. Heat-treating the threads ensures not only a long service life, but also simplifies joining and breaking -- thereby cutting cycle time. The hot rolled surface is rough and can release scaling from the inside, which can enter into the hammer and cause severe damage to internal components. A rough surface gives higher friction losses, resulting in a higher pressure drop in the drill string. Friction welding is a safe and efficient way to weld the end-pieces on to the tube material. The end-pieces rotate with a speed of 480 RPM, and the pressure is between 1,015 PSI and 2,175 PSI depending on the tube diameter and wall thickness. Friction welding gives much stronger joints, compared with electrode welding, due to less risk of impure joints. Similar to the drill pipe, always the first pipe in the hole, usually shorter to compensate for the length of the DTH hammer, and with a greater wall thickness to withstand more abrasion as the hole is drilled. May take the place of the DTH Hammer and Bit in applications where percussive drilling is not required. Este importe incluye los aranceles, los impuestos, la corredurA­a y otras tarifas aplicables. Las tarifas de envA­o internacional e importaciA?n son pagadas en parte a Pitney Bowes Inc.


Import duties, taxes, and other charges are not included in the item price or shipping cost.
Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying. You must contact us within 7 days of receipt of your goods if you wish to make any returns.
Al enviar tu puja, te comprometes a comprar este artA­culo al vendedor si eres el pujador ganador. Si pulsas Confirmar, te comprometes a comprar este artA­culo al vendedor si eres el pujador ganador. Este vendedor exige que el comprador disponga de una cuenta PayPal para poder adquirir el artA­culo.
Al pulsar el botA?n Puja directa, te comprometes a comprar este artA­culo al vendedor si ganas la subasta. Our solution drastically reduces the risk of scaling -- the cause of so many premature hammer failures. To combat the problem we've friction-welded the joints for maximum strength and heat-treated the end-pieces for optimum durability. May be used to increase or decrease the thread diameter or change the thread style as needed for a particular application.
El empaquetado debe ser el mismo que se encontrarA­a en una tienda, a menos que el artA­culo haya sido empaquetado por el fabricante con material no destinado a su venta en tienda (por ejemplo una bolsa o caja sin etiquetas). All goods are returned at buyers expense and risk, and we recommend using Recorded Delivery. Usualmente, los collares de perforacion se suministran en los diametros y dimensiones que se muestran en la Tabla 1.


Si resides en un Estado Miembro de la UE aparte de Reino Unido, el IVA de importaciA?n de esta compra no es recuperable. Los diametros de collares de perforacion indicados en la Tabla 1 fueron adoptados con el fin de ofrecer una gama completa de collares con mejores conexiones, en reemplazo de los collares de las diversas conexiones especificadas en las ediciones anteriores de las especificaciones de la Especificacion 7 de API.Las propiedades mecanicas de los collares de perforacion, en la fabrica, no deberan ser menores que los valores minimos indicados en la Tabla 2.
Naturally, we also offer a wide range of subs and crossovers -- all made of high quality steel and heat-treated in the same way as tube end-pieces.
Unwanted items must be in their original packaging, unused and suitable for re sale in order that a refund for the cost of the item is issued.
Se recomienda consultar la edicion mas reciente de la Especificacion 7 de API en cuanto al metodo y la ubicacion de los ensayos.Los diametros interiores de todos los collares de perforacion deben calibrarse con un mandril de deriva de 10 pies de longitud.
Special and personalised orders, as well as items excluded for Health & Safety reasons, are non returnable. Los valores de la tabla se pueden utilizar para proporcionar la informacion basica necesaria para calcular los pesos de las sartas de collares de perforacion.
Las caracteristicas de alivio de esfuerzos para conexiones de collares de perforacion – Tabla 6 son caracteristicas establecidas por la Especificacion 7 de API, Caracteristicas de alivio de esfuerzo en conexiones. All Rights Reserved.A leading supplier of tubular goods and drilling equipment including new and used drill pipe, heavy weight drill pipe, kelly bushings, rotary tables, kelly and mud valves, drilling tongs and more.



Concrete cutting blade for angle grinder 800w
Best cordless power drill for home use 2014
Powermatic 66 table saw inserts
Ryobi tools good or bad job




Comments to «Drill pipe y drill collar»

  1. fidos writes:
    Setting up compound miter cuts is straightforward.
  2. LediBoss writes:
    Shows their tool cutting beneath table Saw.


2015 Electrical hand tool set organizer | Powered by WordPress