Carbon Steel Water Well Drilling Tools Sub Adapters Drill Bit Connector

Application

JCDRILL can make any and all types of drill string subs. All subs made are API inspected and certified, or they may be new with mill certs. Subs are shorter components of the the drill string, averaging only four feet in length. Most subs are used as an adapter between two different connection types in the same drill string. Often times the connection on drill pipe will differ from that of the bottom hole assembly (drill collars and heavy-weight) and a crossover sub must be used to adapt the two different connections. Another common type of sub is a bit sub. A bit sub is one that is used just above the bit and serves as a crossover between the drill collar connections and the bit connection, and it also houses the float valve. The float valve is basically a one-way fluid valve that allows drilling fluids to pass out of the drill string and into the bit but does not allow those fluids to back-flow into the drill string.

Available Adapter Configurations:

• Box x Pin
• Pin x Pin
• Box x Box
• Pin x Blank
• Box x Blank

Flats depth on subs may be measured in two different ways. The first, and most common, is by the depth

of the flat from the diameter of the sub (1), how much material is removed. The second method of measurement

is to measure the distance between the flat surface to flat surface (2), or the opening of the pipe-handling tool.

If the flat has a taper, please give us the length at the top and again at the bottom of the flat.

Specification

Packing& Delivery

FAQ
1. Shipping time for an order
We have many stock. As usual, we can delivery the goods as soon as we get the full payment.
2. Quality Control
Strict inspection and testing for every order before shipping out .
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4. After Sales Service
Free replacement will provide once the failure confirmed caused by our product quality.

Beijing Jincheng Mining Technology Co.,Ltd(JCDRILL) located in Beijing,China, for more than 20 years we have specilized in research, development and produce of rock blasting drilling rig, water well drilling rig, diamond core drilling rig, anchor drilling rig, and relative accessories & drilling services. constantly provide professional drilling solutions for all customers with our advanced technology, excellent equipment, strict testing means and perfect service network, which establish our brand “JCdrill” a good image of market, now, JC products account for 50% of domestic market and have been export to more than 40 countries, and we awarded ISO9001: 2000 in November, 2002.

Now, our factories for rock blasting drilling rig, water well drilling rig, diamond core drilling rig, anchor drilling rig, and relative accessories occupy an area of 9625 square meters with more than 500 employees, including twenty six engineers from Ingersoll Rand and former Xuanhua Mining Machinery company, with excellent technology and solid market service capabilities, we have both a sound marketing system and excellent service support system, which help us win confidence of customers both at home and abroad. Meanwhile, we are agent of movable double screw air compressor of Atlas Copco,Sullair, Liutech,by which ,we can provide drilling rig users with high quality professional air compressor solution and relative after-sales service also.

JCdrill will always focus on the strategic conception of “Survival by quality, Development by credit’’, to provide users with high quality drilling solutions.In our after sales service system, We establish perfect control system strictly according to ISO-9000 series, in this system, technology date and problem solve solution and preventive measures will be provided in any maintain project, all the spare parts will be used in new OEM products with installation instructions, packing list, manufacturer's instruction, qualification and Warranty certificate.

We provide "one equipment & one case, endless service, namely the after sales service begin from the order confirmation, last for the working life of the equipment.