Threaded pipes can provide an effective seal for pipes transporting liquids, gases, steam, and hydraulic fluid. We thread any length of pipe in diameters ranging from 1/8” to 20”. Tapers available are NPT*, NPS*, 3/16” Peerless, and 8 round taper. (See fabrication services page for larger diameters).

Application and Specifications of Threaded Pipes
Threaded pipes are widely used in pipeline systems that transport liquids, gases, steam and hydraulic oils. They provide effective sealing through threaded connections to ensure that the fluid does not leak during transportation. The following are some frequently asked questions and answers to help better understand the characteristics and applications of threaded pipes.

What is a threaded pipe?
A threaded pipe is a pipe that is connected and sealed by making threads at the ends of the pipe. The design of the thread allows a tight fit between pipes, thereby preventing liquid or gas leakage. Threaded pipes are generally used to transport fluids such as liquids, gases, steam and hydraulic oil.

What are the main applications of threaded pipes?
Threaded pipes are mainly used in the following aspects:
Industrial pipelines: transport liquids, gases and steam, such as chemical, oil and gas industries.
Building facilities: water supply and drainage systems, heating and cooling systems.
Hydraulic systems: transfer hydraulic oil to ensure the normal operation of hydraulic equipment.
Gas transportation: transport natural gas and compressed air in gas distribution systems.

What is the diameter range of threaded pipes?
The diameter range of threaded pipes usually ranges from 1/8 inch to 20 inches, and pipes of different lengths can be customized according to specific needs. For larger diameter pipes, please refer to the Manufacturing Services page for details.

What types of tapers are there for threaded pipes?
The tapers for threaded pipes mainly include the following:
NPT (National Pipe Thread): National standard pipe thread, commonly used in the United States and Canada.
NPS (National Pipe Straight): National standard straight pipe thread, without taper.
3/16" Wushuang: a specific taper-free thread design.
8 taper: one-eighth taper, used for special applications.

How to ensure the sealing effect of threaded pipes?
The sealing effect of threaded pipes mainly depends on the design and installation of threads. The following points ensure the sealing effect:
Taper design: NPT and other tapered threads achieve tight connection through taper matching.
Sealing material: Use sealing tape or sealing paste to further enhance the sealing performance.
Proper installation: Ensure that the threaded pipe is properly tightened to avoid loosening and leakage.

How to choose a suitable threaded pipe?
The following factors need to be considered when choosing a suitable threaded pipe:
Application environment: Select suitable materials such as stainless steel, carbon steel or copper according to the use environment.
Working pressure: Determine the maximum working pressure that the pipeline needs to withstand and select the appropriate wall thickness and material.
Fluid type: Select corrosion-resistant and high-temperature resistant materials according to the type of fluid being transported.
Installation method: Select the appropriate thread type and length according to the installation space and connection method.

What is the difference between NPT and NPS threads?
NPT (National Pipe Thread) and NPS (National Pipe Straight) are two different thread standards:
NPT: has a tapered design, the threads gradually narrow, and the seal is achieved by tightening.
NPS: is a straight thread, without a taper, and requires the use of sealing materials such as gaskets or sealants to achieve sealing.

How to maintain and service threaded pipes?
The following points should be noted when maintaining and servicing threaded pipes:
Regular inspection: Regularly check whether the threaded connection is loose or leaking.
Cleaning and maintenance: Keep the threaded pipe clean to prevent dust and impurities from entering the threaded connection.
Replacement of sealing materials: Regularly replace the sealing tape or sealing paste to ensure the sealing effect of the connection.
Anti-corrosion treatment: Anti-corrosion treatment is performed on corroded threaded pipes, such as applying anti-rust oil or using anti-corrosion coating.

What is the manufacturing process of threaded pipes?
The manufacturing process of threaded pipes includes the following steps:
Material selection: Select suitable metal materials, Such as carbon steel, stainless steel or copper.
Cold rolling: cold rolling steel plate or steel strip into a tube.
Cutting and forming: cutting and forming according to the required length.
Threading: using a threading machine to process threads on the pipe end.
Quality inspection: quality inspection of threaded pipes to ensure thread accuracy and sealing performance.

What are the main advantages of threaded pipes?
Threaded pipes have the following main advantages:
Easy installation: simple threaded connection, easy installation and disassembly.
Reliable sealing: through the taper design and sealing materials, it provides a good sealing effect.
Strong adaptability: suitable for various fluid conveying systems, including liquids, gases and steam.
High durability: using high-quality materials and manufacturing processes, with a long service life.

Can threaded pipes be used as piling pipes and steel pile pipes?

The applicability of threaded pipe as piling pipe and steel pile pipe

Strength and durability: The high strength and durability of threaded pipes make them potential as pile pipes and steel pile pipes, especially in small and medium-sized projects.

Connection performance: The characteristics of threaded connection make threaded pipes easy to construct and install, which is beneficial for piling operations in certain specific environments.

Application scope: Although threaded pipes are mainly used for conveying fluids, in some specific cases, threaded pipes can be used as pile pipes and steel pile pipes after proper design and reinforcement.

Threaded pipes can be used as piling pipes and steel pile pipes under certain conditions, especially in small and medium-sized projects or in specific environments. However, in actual applications, detailed analysis and evaluation are required based on specific project requirements and environmental conditions to ensure that the threaded pipes can meet the required strength, corrosion resistance and stability. At the same time, appropriate design and reinforcement should be carried out according to project needs to ensure their safety and effectiveness.

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