Product Details

Internally Threaded Tubing: Seamless Precision Steel Tube With Internal Threads For High Pressure Boilers
Material and Specification
The internally threaded tubing is a seamless precision steel tube designed specifically for use in high pressure boilers. It is manufactured using advanced manufacturing techniques to ensure superior quality and performance. The tubing is made from high-grade steel and possesses internal threads that allow for efficient fluid or gas transport under high pressure conditions.
Key Features:
- Seamless Precision: The tubing is manufactured using a seamless process, ensuring a precise and consistent internal surface finish.
- Internal Threads: The tubing is equipped with internal threads, providing a secure connection and facilitating the efficient flow of fluids or gases.
- High Pressure Resistance: This internally threaded tubing is specifically engineered to withstand high pressure conditions found in boilers, making it a reliable and durable choice.
- Superior Quality: Made from high-grade steel, this tubing ensures excellent performance and longevity.
- Efficient Fluid Transport: The internal threads enable smooth and efficient fluid or gas transport, minimizing pressure drop and maximizing performance.
Chemical Composition
The following table presents the chemical composition of the internally threaded tubing:
Chemical Element | Composition (%) |
Carbon (C) | 0.17-0.23 |
Manganese (Mn) | 0.60-0.90 |
Silicon (Si) | 0.17-0.37 |
Phosphorus (P) | 0.03 (max) |
Sulfur (S) | 0.03 (max) |
Chromium (Cr) | 0.25 (max) |
Mechanical Properties
The internally threaded tubing possesses the following mechanical properties:
Mechanical Property | Value |
Tensile Strength | 580-760 MPa |
Yield Strength | 420-620 MPa |
Elongation | 8-20% |
Hardness (HV) | 170-220 HV |
Steel Grade
The internally threaded tubing conforms to the steel grade standards X20CrMoV12-1, which ensures high pressure performance and excellent resistance to corrosion and heat.
Application
This seamless precision steel tube with internal threads is widely used in high pressure boilers for various applications, including:
- Power generation: It is utilized in the production of steam and electricity in power plants.
- Petrochemical industry: The tubing is employed in the transportation of various fluids and gases in refineries and chemical plants.
- Thermal energy equipment: It finds application in heating systems and heat exchangers.
Possible Alternative Grades
While the X20CrMoV12-1 steel grade is preferred for high pressure boiler applications, alternative grades such as X12CrMo9-1 and X10CrMoVNb9-1 can also be considered based on specific requirements and environmental conditions. These alternative grades possess similar properties and offer suitable alternatives for various applications.






Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.




Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
Company Profile
Who We are ?
TORICH is an enterprise that has been producing precision steel
pipes and steel pipe processing for over 20 years, with a factory
area of approximately 20000 square meters
The main products produced are carbon steel and alloy steel grade
seamless steel pipes, welded precision steel pipes, DOM steel
pipes, seamless and welded stainless steel pipes。And our separate workshop also produce machined cast iron parts and cast steel
parts, as well ad customized precision parts and difficult
precision parts. Our strength is with in our ability to produce
metal parts of higher quality control in an integrated process, from mapping and mould design, to casting, forging, machining, heat treatment, surface treatment, assembly
and testing.
TORICH team is familiar with the quality requirements and process standards of
precision partssteel tubes of leading industrial companies at home and abroad,and management level, and constantly looks for like-minded excellent
suppliers, which enable us to reduce the have a comparative advantage over many of our competitors.
In the field of processing, TORICH has 18 sets 4-axis/3-axis CNC machines and over 30 sets of
CNC lathers. The machining center is capable of machining
1100x600x800mm parts and the CNC lathes are capable of processing
550x1500mm parts. We specialize in machining stainless steel, alloy
steel and other hard metals, as well as carbon steel, aluminium,
and copper, with a dimensional accuracy of 0.01mm.
As of 2023, TORICH has perfectly cooperated with more than 50
countries, including Russia, India, Australia, the United Kingdom, France, the United States,
Canada, Brazil, and Egypt. Quality and reputation are always our
first concerns, with the aim of well serving every customer who
trusts in us. TORICH looks forward to partnering with customers all
over the world.
What products we do?
------- Invent and produce various Precision Steel Pipes
Our steel pipes cover the following ranges:
Seamless Precision Steel Pipes
Welded Precision Steel Pipes, with DOM production
Seamless Heat Exchanger Steel Pipe
Seamless Boiler Steel Pipes
Seamless Structural Steel Pipes
Seamless Mechanical Steel Pipes
Seamless Alloy Steel Tubes & Pipes
Seamless Stainless Steel tubes
Welded Stainless Steel Tubes
Seamless Stainless Steel Tubes & Pipes
Welded Stainless Steel Tubes & Pipes
Seamless Carbon Steel Tubes & Pipes
Nickel Alloy Steel Tubes & Pipes
CNC Stainless Steel Parts
CNC Aluminum Parts
CNC CopperParts
CNC Turning Parts
CNC Milling Parts
Products Application:
Oil Cylinders
Air Cylinder,
Automotive Cylinder Liners
Boilers, Pressure Vessels
Shell & Heat Exchangers
Jack Lifting
Telescopic Systems
Pneumatic Cylinders
Agricultural Machineries