Hole Drilling Tools Sub Adaptor For DTH And Water well drilling

Application

A Sub Adapter, a special short length of pipe with a drill pipe connection on the top and a drill collar connection on the bottom, is added before a drill pipe can be screwed onto the drill collars.

Cross over subs act as an intermediary between two dissimilar threads and are used to connect the two. There are some other uses for cross over subs as well. A crossover sub can be used to protect other tooling in your drill string. Since the cross over sub is the least expensive item in the drill string it can be designed to wear before any other drilling component does. In this application a Cross over sub is often called a SAVER SUB. The Saver Sub is used to connect the entry side swivel to the first piece of pipe and is attached to every pipe, going in and coming out. This position in the string is subject to much wear, so saver sub was designed to be an inexpensive, easily replaceable part. As such, it is used to protect the threads on the actual pipe and allows for a quick and onsite replacement. Using saver sub offers great advantages, as it is cheaper to change a saver sub often, than to buy new pipe once.

A cross over sub can also be used just above the bit or in a reverse circulation application to deliver outgoing air to the bit face. In these applications a cross over sub is usually called a BIT SUB.

All of our cross over subs can have wrench flats milled into them to allow for better assembly and disassembly.

Characteristics

1. We adopts famous domestic large steel enterprises production of material to produce drill pipe, and heat treatment of materials by using an integrated multi-processing furnace, professional CNC machining was applied in all of the connection thread processing, all the threads are configured thread gauge, which are in accordance with international standard, Internal thickening technology has carrued on the tempering process after friction welding, so the processing quality of drill pipe is stable, reliable, use cycle greatly extended. We can process different length, diameter and wall thickness and material of API standard thread rod, we also can design and manufacture drill pipe according to customers' requirement of the material, length, wall thicknessa and connection thread.

2. Our Sub are of the highest quality ,are manufactured to exacting specifications using advancing maching technoogy.

3. They are manufactured from seamless steel tube by cold drawn.The material which meets the global standard.

4. Sub are made from quality heat treated materials which ensure superior strength, wear resistance and toughness in the most demanding applications

5. Sub are manufactured under stringent industry standards, and are field tested under a variety of conditions.

Specification

Packing& Delivery

Beijing Jincheng Mining Technology Co., Ltd. (JCDRILL) is located in Beijing, China. For more than 20 years, we have specialized in the research, development, and production of rock blasting drilling rigs, water well drilling rigs, diamond core drilling rigs, anchor drilling rigs, and related accessories & drilling services. With our advanced technology, high-quality equipment, rigorous testing processes, and comprehensive service network, we consistently provide professional drilling solutions to our customers. These strengths have helped establish the “JCDRILL” brand as a trusted name in the market. Currently, JCDRILL products account for 50% of the domestic market and are exported to more than 40 countries. In November 2002, we were awarded ISO9001:2000 certification.

Our manufacturing facilities, covering an area of 9,625 square meters, specialize in the production of rock blasting drilling rigs, water well drilling rigs, diamond core drilling rigs, anchor drilling rigs, and related accessories. We employ more than 500 staff, including 26 experienced engineers from Ingersoll Rand and the former Xuanhua Mining Machinery Company. With our strong technological expertise and robust market service capabilities, we have developed both an efficient marketing system and an excellent service support system, earning the trust of customers worldwide.

Additionally, we serve as an authorized agent for mobile double-screw air compressors from Atlas Copco, Sullair, and Liutech. This allows us to offer drilling rig users high-quality, professional air compressor solutions along with reliable after-sales services.

At JCDRILL, we are committed to our strategic vision: “Survival by Quality, Development by Credit.” We strive to provide users with high-quality drilling solutions. Our after-sales service system follows a strict control framework based on ISO-9000 standards. This system ensures that technical data, problem-solving solutions, and preventive measures are provided for every maintenance project. All spare parts are sourced from new OEM products and come with installation instructions, packing lists, manufacturer documentation, qualification certificates, and warranty certificates.

We uphold the principle of “One Equipment, One Case, Endless Service”—our after-sales support begins from the moment an order is confirmed and lasts throughout the equipment’s entire operational life.