Drill Rods and Casings

Why Choose Us?

Custom Service/Accept ODM/OEM service

Strong product development capabilities and advanced fabrication equipment, can be customized according to customer's special requirements.

Competitive Pricing

We offer our services at affordable rates to make them accessible to many clients. Our pricing is transparent and without any hidden costs.

Professional Team

Our company has advanced CNC processing equipment and a team of experienced drilling and construction machinery engineers. The quality of the product is guaranteed and the production efficiency is improved.

Certificate & Honor

Certified according to ISO 9001:2015 and ISO 14001:2015. Many patents are obtained for continuously innovation..

Wireline Drill Rods

Add to Inquiry
Wireline Coring Drill Rod

Add to Inquiry
Geological Drill Rod

Add to Inquiry
AQ BQ NQ HQ PQ Drill Rod

Add to Inquiry
Drill Rod for Mining Exploration

Add to Inquiry
BTW NTW HTW Drill Rod

Add to Inquiry
AW BW NW HW PW Casing Tube

Add to Inquiry
Drill Pipe Casing

Add to Inquiry

What Is Geological Drill Rod

The drill rod is created from top-quality carbon steel. This rod is utilized for the production of taps, roller bearings, and drill bits. It is also essential to produce punches, hammers and diverse files. The drill rod is present in the machinery to facilitate the operations of producing tools. This rod is good enough to make durable and hard tools. These rods are produced with diverse steel grades.

Advantages of Geological Drill Rod

Increased efficiency: Drill rods allow for faster penetration and easier extraction of drilling equipment, resulting in quicker drilling times and improved overall efficiency.

Enhanced accuracy: Drill rods provide precision and accuracy, allowing for more accurate drilling and improved results.

Improved durability: Drill rods are made of high-quality materials such as steel, which makes them durable and able to withstand harsh drilling conditions.

Reduced costs: The use of drill rods can help minimize drilling costs by reducing the need for replacement equipment and improving overall drilling performance.

More versatility: Drill rods can be used for a variety of different drilling applications, making them a versatile tool for many different industries and projects.

Operation Details About Geological Drill Rod

Preparation: Begin by checking the drill rig and all equipment to ensure they are in good condition and ready to use. This will include checking the drill bit, the drill rig power supply, and the drill rods themselves.

Insertion: Next, select the appropriate drill rod and insert it into the drill rig. Ensure that it is securely fastened and that the drilling end is in the correct position.

Drilling: Begin drilling by slowly pushing the drill rod into the ground. Use a constant and steady pressure to ensure that the rod progresses smoothly through the soil or rock.

Removal: Once the drill rod has reached the desired depth, carefully remove it from the hole. Be sure to follow the manufacturer's instructions for removing the rod, as some models may require a specific technique depending on their design.

Cleaning: Once the rod is removed from the hole, use a wire brush to clean any dirt or debris from the rod's surface. This will help to prolong its lifespan and ensure that it is ready for use the next time it is needed.

Storage: Finally, store the drill rod in a safe place to protect it from damage. This could be a storage rack or a specialized container designed to protect the rod during transportation and storage.

Characteristics of Drill Rods

Each rod has a specific content of carbon. You can find these rods in the standard size of 36 inches. The diameter of the rod ranges from 1.2-5 centimeters. Nevertheless, you can get these rods in diverse dimensions. Usually, these rods are designed in square shape. There are two types of drilling rods readily accessible online or offline. These types are known as the water hardened and oil-hardened rods. The first one is utilized for the production of the hammers. However, you need to know that the rod does not incorporate any alloys. It basically helps the materials’ operation. It is significant to note that the water hardened rods are not good when it comes to welding projects. On the other hand, the oil hardened rods are good for welding projects. Their toughness makes them ideal for producing typical tools.

How to Effectively Extend the Service Life of Drill Pipe

1. When using the drill pipe for secondary drilling, you should first "grind the new buckle". This includes applying thread oil first, then tightening it with the full strength of the drilling rig, opening the buckle, and applying thread oil again. Open it and repeat this three times to avoid new wear and snaps.

2. Tighten with full torque every time you buckle, and always pay attention to whether the clip is in good condition. When tightening, tighten slowly to reduce overheating and wear.

3. When using a new drill pipe, make sure that the screw thread on the front section of the drill bit (protecting the shaft head) is also close to new. A rotor with a bad screw can easily damage the screw thread of the new drill pipe, causing leakage, buckling, and loosening. Disengagement status.

4. Keep using drill pipes in turns, and avoid using fixed drill pipes for guidance and back-expansion. They must take turns to avoid excessive wear and tear.

5. Keep the entrance angle as small as possible, and slowly change the angle according to the safety requirements of the drill pipe.

6. Try to keep the drill pipe in a straight line between the ground and the ground. This can avoid the force on the side of the threaded part and cause unnecessary wear and even jump. It is very important to anchor the drill well to avoid force movement during construction.

7. Do not exceed the bending radius of the drill pipe. Pay special attention to the angle change when drilling into the horizontal section and when drilling out.

8. Shorten the distance between the drilling rig and the ground entrance, because if the drill pipe lacks support, the drill pipe will easily bend and deform when it is pushed and guided, resulting in a shortened service life.

Drill Rod Size Available

Size	Outer Diameter (mm)	Inner Diameter(mm)
AQ	44.7	37.3
BQ	55.7	46.1
NQ	70.0	60.2
HQ	89.0	78.0
PQ	114.5	101.5

What Is the Difference Between Geological Drill Rods and Downhole Drill Rods

Before engineering blasting, a down the hole drill bit is used to drill holes in rocks and fill them with explosives. Provide electric and internal combustion engine models.

Classification

Downhole drill rods are classified using multiple methods based on their respective qualities. These two points are:
Downhole drill rods can be divided into two types: downhole drill rods and open-pit drill rods, depending on their usage location. According to the presence of a walking mechanism, downhole downhole drill rods can be classified as self-propelled or non self-propelled. In China, there are several types of open-air self-propelled downhole drill rods.
According to various diameters, down the hole drilling machines can be divided into light down the hole drilling machines (with a diameter of 80-100mm), medium down the hole drilling machines (with a diameter of 130-180mm), or heavy down the hole drilling machines (with a diameter of 180-250mm).

Structural composition

The downhole drill rod, button drill bit, and impactor constitute the drilling tool. Use two drill pipe extensions for drilling. The rotating motor, rotating reducer, and air supply rotator form a rotating air supply mechanism. The three-stage anisotropic closed cylindrical gear that constitutes the rotary reducer is automatically oiled by a spiral oiler. The pneumatic fixture is located at the connection point of the drill pipe of the gas supply rotary device, and is composed of connecting body, sealing element, hollow spindle and other components. The lifting motor, along with the lifting reducer, lifting chain, steering mechanism, and drilling tools, not only realizes the lifting action, but also realizes the lifting pressure control system. Insert a pressure regulating cylinder and a movable pulley group into the closed chain system. During normal operation, the piston rod of the pressure regulating cylinder pulls the movable pulley block, which makes it possible to drill the drilling tool by reducing pressure.

Usage characteristics

In projects involving urban construction, railways, highways, rivers, hydropower and other similar infrastructure, engineering anchor drilling machines can be used to drill rock anchor holes, anchor holes, blasting holes, grouting holes, etc.

Materials Used in Drill Rods

Carbon steel drill rods
This is a type of drill rod that consists of carbon as the main alloy though other elements may be present in the manufacture in small amounts. The carbon that is present in the rod enhances the durability and increases the strength of the drill rod. Other elements include steel which is used in some of the manufacturing processes to make the drill rod tough. Oil and tempering agents are also used in the heat treatment process for durability and to increase the strength. Finally, some of the carbon rods may be used to protect the carbon steel rod from wear and corroding.

Alloy steel drill rods
The rods are made up of high-quality steel alloys that provide the drill rod with the desired strength, durability and make them resistant to wear. The alloys used may vary depending on various things but the commonly used alloy elements are the molybdenum, vanadium, chromium and nickel.

Stainless steel drill rods
In this drill rod, stainless steel is the most used alloy. It also uses iron, chromium and nickel as other additional elements. Carbon steel may be used in some instances because it’s cheap but may not be used in harsh areas, a coat named tungsten carbide is also used to prevent wear and increase the durability. Finally, a diamond coating is used to prevent the drill rod from wearing out.

What Is Drill Pipe Casing

A casing tube is a cylindrical steel pipe that is inserted into a wellbore to provide structural support and prevent collapse of the well walls. It is typically placed between the drilled hole and the oil or gas reservoir and is cemented in place to form a barrier to prevent the migration of fluids between different layers of rock formations. Casing tubes also help in providing a conduit for the production of oil and gas from the well. They come in different sizes and thicknesses depending on the specific well design and geological formation.

Advantages of Drill Pipe Casing

Lower costs: Casing advancement systems improve the drilling process for contractors which saves operating costs. Retrievable casings can also be reused across multiple projects, which greatly reduces the cost of replacing your equipment.

Increase efficiency: By casing as your drill, operators can work more productively which helps complete projects in less time with minimum downtime.

Reduce risk: By reinforcing hole walls as you drill, you minimize the risk of hole collapse and any resulting damage to surrounding structures.

Improve safety: Drilling contractors are better protected from harm, particularly in jobs that have greater risk, such as pipe roofing, as these unpredictable structures are reinforced during the drilling process.

Difference Between Casing Pipe and Drill Pipe

Different uses
Casing and drill pipe serve distinct roles in the drilling process. Casing is inserted into the wellbore to stabilize the well wall and prevent oil and gas leakage. It also connects the surface equipment to the wellhead. Drill pipe, on the other hand, is used to send the drill bit to the bottom of the well and perform detection and sampling work.

Different materials
Casing and drill pipe materials vary. Casings are typically made of steel or plastic to withstand high pressure and temperature in underground environments. Drill pipes are made of high-strength steel or aluminum alloy to withstand the high pressure at the bottom of the well and strong geological reactions.

Different structures
Differences exist in the construction of casing and drill pipe. Casings are typically tubes with varying wall thicknesses, cross-sectional dimensions, and collapse pressures. The upper part of the casing has a smaller diameter, while the lower part has a larger diameter to reduce the diameter of the wellbore and withstand geological pressure. In contrast, drill pipe consists of a series of long tubes and rods, which may use various types of steel and connectors. A weight is often attached to the lower end to aid in the downward force of gravity. The length of the drill pipe is determined by the well depth and drilling target, while the casing length is typically equivalent to the well depth.

Contact between the two
Although casing and drill pipe have different structures and purposes, they are related. During the drilling process, the casing is inserted into the wellbore layer by layer through the drill pipe, serving as a bridge between surface equipment and bottom-hole work. During the drilling process, the casing is inserted into the wellbore layer by layer through the drill pipe, serving as a bridge between surface equipment and bottom-hole work. The two are closely connected.

Learn How to Differentiate Oil Casing Pipe From Oil Drill Pipe

Oil Casing pipes and oil drill pipes are common in squeezing cement and handling underground accident industries. Oil casing pipe refers to the steel pipe that supports well walls of gas and oil wells. A drill pipe is a hollow, steel or aluminum pipe normally used on drilling rings. Casing and drilling pipes are not the same. There are certain dissimilarities that make them different from one another.
Drill pipes are essential for the drilling process. Drill pipes often turn the drill bit that cuts the rock. On the contrary, casing pipes refer to certain tubing that are set inside the well. It supports the well stream. Casing pipes withstand water from being contaminated through drilling mud.

Drill pipes and casing tubes have different standards. The 5D specification in the API standard is considered to be the perfect combination for Drill pipes. Casing pipes require 5CT in terms of APT standard.

For casing pipes, they have limited connection types to choose from. Whereas drilling pipes have plenty of connection types.

During drilling, there is always a threat that upper and bottom layers may leak. The role of casing is important in preventing the upper layer from leaking. It will make sure the upper layer is not leaked while drilling the bottom.

Wells use different layers of casing according to the depth of drilling. According to the usage, casing is typically divided into surface casing, technical casing and oil layer casing.

Drill pipes transport the drilling mud to the drilling bit. The drill pipes should be strong enough to withstand extreme internal as well as external pressure. Drill rods are of many types such as square drill rods and weighted drill rods.

The role of oil casing pipe and oil drilling pipe is completely different. Oil casing pipe reinforces the well wall. There are different components of drill string such as drill bit, drill rod, stabilizer etc. Drill string lifts the drill bit, transmits the power and applies the weight. If your business requires used oilfield pipe, you must find a distributor who sells used oilfield pipes.

Characteristic of casing pipe

Casing pipe is important to oil drilling equipment, and its main equipment includes drill, core pipe and casing, drill collars and drilling small diameter steel pipe and so on.

The casing pipe is used to support oil and gas wall of the pipe, to ensure that the drilling and completion of the process of the normal operation of the wells. Depending on the drilling each well depth and geological conditions, to use several layers of casing. Casing cementing go down after using it with tubing, drill pipe are different, can not be reused, a one-time consumable materials. Therefore, the total consumption of the casing is 70% of the oil well pipe. Casing can be divided according to usage: catheter, surface casing, casing and production casing. Casing pipe is a large-diameter pipe, play a fixed oil and gas wells, or wellbore wall effect. The casing pipe is inserted into the well hole, fixed with cement to prevent the formation and borehole spaced borehole collapse and to ensure circulation of the drilling mud to the drilling mined.

Casing pipe is mainly used for drilling oil wells during drilling and after completion of the support wall to ensure that the conduct of the drilling process and completion of the wells after the regular oil casing normal operation. OCTG mainly used for oil and gas well drilling and oil and gas transportation. It includes oil drilling pipe, oil casing, pump tubing. Oil drill pipes are mainly used to connect the drill collar and drill and pass drilling power. Casing pipe is mainly used for drilling and completion of the right wall of the support, to ensure that the conduct and completion of the drilling process after the normal operation of the wells. Pumping wells at the bottom of the tubing will mainly oil, gas transported to the ground.

Casing pipe is to maintain the wells run lifeline. As different geological conditions, underground complex stress state, pulling, pressing, bending, torsional stress acting on the combined effect of the tube, which the casing itself, the quality of the higher requirements. Once the casing itself is damaged for some reason, could lead to the whole production wells, or even scrapped.

FAQ

Q: What is the purpose of a drill rod?

A: What is drill rod used for? Drill rod is unhardened, precision ground, round bar used in a variety of industries including manufacturing and construction. It is often used in the manufacture of dies, punches, drills, gauges, pins, and other machine parts that require high strength and durability.

Q: What grade of steel is drill rod?

A: Drill Rod Tool Steel: Grades A2, D2, O1, and W1 | Southern Tool Steel, Inc.

Q: How are drill rods made?

A: Drill Rod is made by machining tool grade steel into rods. The rod is precision ground to a specific tolerance and then polished to have a clean and smooth surface. The polishing process helps ensure the specific tolerance is maintained.

Q: Is drill rod high carbon?

A: Watercrat is the most popular, versatile, and least expensive grade of drill rod. The through-hardening characteristic has optimum response to heat treatment and provides toughness and excellent wear-resistance in service. Its high carbon content allows it to be used often without heat treatment for many applications.

Q: What is the difference between a drill string and a drill rod?

A: Drill rods are segments of stainless steel piping, which are joined together to form a drill string. The drill string connects the drilling rig at the surface to the drilling head at the tunnel face.

Q: Are drill rods straight?

A: Straightness. Because of the very high rotational speeds at which diamond drill rod operates it is essential that the drill rod is straight. If the drill rod is not straight then vibration and accelerated wear will result.

Q: Can drill rod be welded?

A: O-1 drill rod is not the ideal material to be welding. The problem is the high carbon content will precipitate into the weld and create an extremely brittle area.

Q: What is the difference between drill rod and HSS?

A: Drill rod is usually in the annealled state and can be machined. Then hardened after. HSS is already in a hard state.

Q: Is silver steel the same as drill rod?

A: Chris, drill Rod is the Yank terminology for what we know as silver steel. Generally a reasonable carbon tool steel for general purpose.

Q: How do you harden a drill rod?

A: HEAT TREATMENT Sections smaller than ¼” heat to 1450°-1475°F and hold until heated through. For larger sections, preheat to 1200°F, the raise to 1450°-1500°F to hardening temperature, hold one-half hour per inch of cross section. Quench in oil at 125°-150°F.

Q: What is the purpose of pipe casing?

A: This type of pipe is used to protect sewer and water lines, gas and oil pipelines, and electrical and fiber optic cables. Casing pipe protects utility lines being installed under highways and railways, and in some applications, rivers and lakes. Casing pipe is useful for protecting utility lines underground.

Q: What is the difference between drill pipe and casing threads?

A: While they may look similar, they have distinct differences that make them suitable for different applications. Oil casing pipes line the walls of an oil well to prevent the hole from collapsing, while oil drill pipes transfer drilling fluid and rotate the drill bit.

Q: What is drill casing made of?

A: Commonly used alloy steels include Cr-Mo alloy steel, Ni-Cr-Mo alloy steel, etc. Stainless steel casing has the advantages of corrosion resistance and high temperature resistance, and is widely used in marine development and other fields. Commonly used stainless steel materials include 304, 316, 321, etc.

Q: Why do you drill a casing?

A: Installing drilling casing as the hole is drilled helps to stabilize loose, or unpredictable formations, and shore up the hole. This is particularly the case when penetrating clay, silt, sand, gravel, cobbles, boulders, and fractured rock. Casing and drilling simultaneously improve drilling efficiency.

Q: What is the difference between casing and tubing pipe?

A: Purpose: The main difference between casing and tubing is their purpose. Casing is used to line the wellbore and prevent it from collapsing, while tubing is used to convey fluids such as oil or gas from the reservoir to the surface. Size: Casing is typically larger in diameter than tubing.

Q: What is the difference between casing and tubing?

A: Anything smaller is called tubing, anything larger is casing. From the surface to the bottom of the well, the casing telescopes down in size – there are various types of casing depending on their purpose and diameter. The “kickoff point” is where the wellbore gradually transitions from vertical to horizontal.

Q: How many types of drill pipes are there?

A: Generally, most pipe types can be bought new or used, and are graded according to three broad categories (New, or N; Premium, or P; and C, which has three subdivisions).

Q: How many types of casing pipes are there?

A: There are five different types of casing pipe: Conductor Casing, Surface Casing, Intermediate Casing, liner String, Production Casing.

Q: What size is drilling casing?

A: A typical size of surface casing is 13⅜ inches. Intermediate casing may be necessary on longer drilling intervals where necessary drilling mud weight to prevent blowouts may cause a hydrostatic pressure that can fracture shallower or deeper formations.

Q: What is casing in a drilled well?

A: A well casing is a lining that is installed in an oil well once it is drilled and surrounds the well entirely. Casing is typically hollow steel pipe that lines the inside of the wellbore. Casings are used to support the well, as the raw sides of the well would collapse in without support.

As one of the most professional drill rods and casings manufacturers and suppliers in China, we're featured by quality products and competitive price. Please rest assured to buy the best drill rods and casings for sale here from our factory. Also, custom service is available.