J55-L80 Grade Direct-Supply Deep Well Casing, Precision Thread, Reliable Quality, Cost-Effective

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 1 m.t.

Supply Capability:: 1100 m.t./month

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API 5CT J55/N80/P110 OCTG Casing & Tubing Manufacturer Direct‌

‌Comprehensive OCTG Solutions for Every Well Profile‌

As an API-licensed manufacturer, we eliminate intermediaries to deliver J55/N80/P110 casing and tubing with 15% cost savings. Our vertically integrated production process ensures full traceability from steel billet to finished product.

‌Technical Specifications‌

‌Material Science‌:

J55: 0.45% Mn, 0.25% C composition for shallow wells (≤8,000ft TVD)
N80: Quenched & tempered microstructure withstands 12,000psi collapse pressure
P110: 110ksi SMYS with Charpy V-notch impact ≥45J at -20°C

‌Threading Technology‌:

CNC-machined API LTC/BTC threads with ±0.003" pitch diameter tolerance
Optional VAM TOP connections for HPHT wells

‌Quality Assurance‌:

100% ultrasonic testing (UT) for laminations
Hydrostatic tested to 80% of yield strength

‌Applications‌

J55: Water injection wells, surface casing
N80: Intermediate casing in sour gas fields
P110: Production casing in 15,000psi reservoirs

‌Case Study‌

A Permian Basin operator reduced casing costs by 18% using our direct-shipment P110 casing for 35 horizontal wells, achieving 95% torque-turn compliance during running

Q: What are the different methods of pipe cutting for steel pipes?: There exists a variety of techniques for cutting steel pipes, each tailored to specific circumstances and demands. Some of the most prevalent techniques are as follows: 1. Manual Pipe Cutters: These handheld tools are frequently employed for cutting smaller steel pipes. They typically feature a rotating cutting wheel that gradually creates a groove until the pipe is severed. Portable and relatively user-friendly, manual pipe cutters are suitable for on-site cutting tasks. 2. Hacksaw: The use of a hacksaw is a traditional and cost-effective means of cutting steel pipes. This method requires physical exertion and time; however, it can effectively cut pipes with smaller diameters. It is crucial to use a fine-toothed blade and apply steady pressure to ensure a clean and precise cut. 3. Reciprocating Saw: Also known as a sawzall, the reciprocating saw is a power tool that employs a back-and-forth cutting motion to swiftly and efficiently cut through steel pipes. These versatile saws can accommodate different types of blades to handle various pipe sizes and thicknesses. 4. Band Saw: Band saws are commonly employed in industrial settings for the purpose of cutting large steel pipes. These saws feature a continuous loop of teethed metal blade that moves on wheels, enabling precise and rapid cutting. Band saws are ideal for cutting large-diameter pipes and can be operated manually or fully automated for high-volume cutting tasks. 5. Pipe Cutting Machines: Pipe cutting machines are often utilized to achieve precise and consistent cuts. These machines are designed to cut steel pipes swiftly and accurately, making them suitable for large-scale industrial applications. Depending on the machine and requirements, various cutting methods like abrasive cutting, flame cutting, or plasma cutting can be employed. It is important to note that the selection of a pipe cutting method depends on factors such as pipe diameter, thickness, location, precision requirements, and available resources. It is imperative to adhere to proper safety precautions when working with any cutting method to prevent injury or damage to the pipes.

Q: How are steel pipes threaded for connection?: Steel pipes are threaded for connection using a threading machine or a die. The pipe is clamped securely into the machine, and a rotating die is then used to cut threads into the pipe's surface. This process creates the necessary grooves and ridges that allow the pipes to be securely connected together.

Q: What is the standard length of a steel pipe?: The standard length of a steel pipe can vary depending on the industry and application. However, in general, the standard lengths of steel pipes range from 18 to 24 feet. These lengths are commonly used in construction, plumbing, and other industrial applications. It is important to note that custom lengths can also be obtained to suit specific project requirements.

Q: Does seamless steel tube have a bend of 135 degrees?: In engineering, it is usually marked as "45 elbow" and has no "135" mark. The angle of the elbow is acute, so there will be no more than 90 degrees elbow.

Q: What are the properties of steel that make it suitable for pipe manufacturing?: Steel is an ideal material for pipe manufacturing due to its various properties, including high strength, durability, and resistance to corrosion and extreme temperatures. It can withstand high pressure and can be easily fabricated into different shapes and sizes, making it versatile for various piping applications. Additionally, its smooth surface ensures efficient flow of fluids and reduces friction losses.

Q: How are steel pipes used in LNG terminals?: Steel pipes are used in LNG terminals for various purposes, including the transportation and storage of liquefied natural gas. These pipes are responsible for conveying the LNG from the storage tanks to the regasification units, where it is converted back into its gaseous state for distribution. Steel pipes are preferred for this application due to their strength, durability, and ability to withstand extreme temperatures and pressures. Additionally, these pipes are used for the safe transfer of other fluids and gases within the LNG terminal infrastructure.

Q: What's the difference between a cracked carbon steel tube and a liquid carbon steel tube?: If the material is the same, the process is different from the test.

Q: What is the difference between hot-dip galvanizing and electroplating for steel pipes?: Hot-dip galvanizing and electroplating are two common methods used to provide corrosion protection for steel pipes, but there are key differences between the two processes. Hot-dip galvanizing involves immersing the steel pipes into a bath of molten zinc, which forms a metallurgical bond with the steel. This results in a thick and durable zinc coating that provides excellent corrosion resistance. The process of hot-dip galvanizing creates a uniform coating that covers the entire surface of the steel pipe, including both the external and internal surfaces. This makes hot-dip galvanizing particularly effective for protecting both the inside and outside of the pipes. On the other hand, electroplating is a process that involves the deposition of a thin layer of metal onto the surface of the steel pipes using an electric current. In the case of electroplating for steel pipes, typically a layer of zinc is applied. Unlike hot-dip galvanizing, electroplating does not provide a metallurgical bond between the zinc and the steel. Instead, it creates a mechanical bond, which is not as strong or durable as the bond formed through hot-dip galvanizing. The electroplated zinc layer is thinner compared to hot-dip galvanizing, which means it may not provide the same level of corrosion protection. Another difference between hot-dip galvanizing and electroplating is the application process. Hot-dip galvanizing requires immersing the steel pipes into a bath of molten zinc, which can be a time-consuming process. Electroplating, on the other hand, involves applying the zinc coating through an electrolytic cell, which can be faster and more efficient. In summary, the main difference between hot-dip galvanizing and electroplating for steel pipes lies in the thickness and durability of the coating, as well as the bonding mechanism between the zinc and the steel. Hot-dip galvanizing provides a thicker and more durable coating with a metallurgical bond, making it more effective for long-term corrosion protection. Electroplating, on the other hand, creates a thinner coating with a mechanical bond, which may be suitable for applications requiring a less robust level of corrosion resistance.

Q: Can steel pipes be used for signposts or street lighting poles?: Yes, steel pipes can be used for signposts or street lighting poles. Steel pipes are often chosen for their durability, strength, and resistance to harsh weather conditions, making them suitable for supporting signs or street lighting fixtures.

Q: How are steel pipes coated for underground applications?: Steel pipes are typically coated for underground applications using a variety of methods, including but not limited to hot-dip galvanizing, epoxy coating, and polyethylene wrapping. These protective coatings help prevent corrosion, increase the lifespan of the pipes, and ensure their reliability in underground environments.

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