What is Stainless Steel Round Pipe?
Stainless steel round tube is a hollow, circular pipe made from stainless steel material. Based on their intended application, these tubes can be categorized into decorative, industrial, and sanitary grades; based on their manufacturing process, they are classified as either seamless or welded tubes.
Seamless steel tubes are further subdivided into hot-rolled, cold-rolled, cold-drawn, and extruded types-with cold drawing and cold rolling constituting secondary processing stages for the tubing-while welded tubes are classified into straight-seam and spiral-seam varieties, among others.
product specifications
| Standards | ASTM A312 / ASTM A213 / ASTM A269 / ASTM A270 / ASTM A789 / ASTM A790 / EN 10216-5 / EN 10217-7 / JIS G3459 / GOST 9941,etc. |
| Steel Grades | 304, 304L, 316, 316L, 321, 310S, 347H, 904L, S31803, S32205, S32750,etc. |
| Outer Diameter (seamless) | 5mm – 630mm, customizable |
| Outer Diameter (welded) | 8mm - 1800mm, customizable |
| Wall Thickness (WT) | 0.5mm-55mm, customizable |
| Length | 3m / 6m / 12m, customizable |
| Surface Treatment | Pickled Finish,Annealed & Pickled, BA Finish, Polished Finish(No.180 / No.240/No.320 / No.400/No.600), Electro-Polished, etc. |
| Production Process | Hot Rolling / Cold Drawing / Cold Rolling /TIG Welding/ Laser Welding/ High Frequency Welding,etc. |
Why choose us
Quality control
TORICH implements a strict quality management system throughout the entire production process, ensuring that the pipes meet international standards such as ASTM, JIS, DIN, and EN.
Production capacity
TORICH boasts modern production lines with an annual capacity of 24,000 metric tons, enabling stable supply and timely delivery for large-scale projects and long-term contracts.
Customized service
TORICH offers flexible customization services, including custom sizes, materials, and special shapes. In addition, value-added processing services such as cutting, bending, and surface treatment are also available.
Packaging
TORICH uses packaging methods such as plastic end caps, plastic film, woven bags, wooden crates, and iron frames to prevent damage or contamination of the pipes during transportation.
Application areas
Oil & Gas
Stainless steel round pipes offer excellent corrosion, pressure, and heat resistance, making them ideal for oil and petrochemical applications such as high-pressure furnace tubes, piping systems, cracking tubes, fluid transport, and heat exchangers.
Chemical & Petrochemical
Stainless steel offers excellent resistance to acids, alkalis, and corrosive media, making it ideal for chemical and petrochemical applications such as process piping, heat exchangers, furnace tubes, fluid transport, and high-pressure systems.
Medical & Pharmaceutical
TORICH stainless steel round tubes feature an outer diameter tolerance of ±0.03 mm and inner surface roughness of Ra ≤ 0.25 μm, making them ideal for pharmaceutical production lines, high-purity fluid systems, medical devices, and other precision applications.
Mechanical & Engineering
Stainless steel round tube offers excellent machinability and dimensional stability, making it ideal for hydraulic systems, mechanical components, automation equipment, and other precision engineering applications.
Heat Exchanger & Energy
Stainless steel offers excellent high-temperature resistance, with grades such as 310S performing at up to 1000–1100°C, making it suitable for heat exchangers, boilers, and HRSG systems.
Automotive
Stainless steel round pipes are widely used in automotive exhaust, fuel and brake lines, turbocharging, and thermal management systems, offering excellent heat resistance, corrosion resistance, and mechanical strength for both ICE and electric vehicles.
Manufacturing Process of Stainless Steel Round Pipe
Raw Material Selection
The process begins with the selection of high-quality raw materials. In the case of pipe, the primary material is stainless steel, which contains a higher carbon content than standard stainless steel for improved high-temperature strength.
Heating And Melting
The selected raw materials, typically in the form of billets or ingots, are heated in a furnace to a temperature suitable for melting. Once the desired temperature is reached, the materials are melted to form a molten metal.
Pipe Formation
The molten metal is then poured into a continuous casting machine, where it is transformed into a solid cylindrical shape. The casting process helps achieve a consistent and defect-free structure.
Piercing
The solid cylindrical shape, known as a billet, is then pierced by a piercing mill to create a hollow shell. The piercing process involves forcing a piercing plug through the center of the billet to create a round hole.
Sizing And Reducing
The pierced shell is passed through a series of sizing and reducing mills to gradually reduce its diameter and achieve the desired wall thickness. This process involves multiple passes through different rolls to ensure precise dimensions and a uniform structure.
Heat Treatment
After sizing and reducing, the pipe is subjected to heat treatment to enhance its mechanical properties and improve its resistance to corrosion and high-temperature environments. Heat treatment typically involves annealing, quenching, and tempering processes.
Straightening And Cutting
The heat-treated pipe is straightened using straightening machines to achieve a straight and uniform shape. It is then cut into desired lengths using saws or other cutting tools.
Non-destructive Testing
To ensure the quality and integrity of the stainless steel round pipe, various non-destructive testing methods are employed. These may include ultrasonic testing, eddy current testing, or visual inspection to detect any defects or imperfections.
seamless
Welded
Our Certificate
Customer cooperation
FAQ
Q: What is stainless steel round tube?
Q: What is the most common type of steel pipe?
Q: What is 304 stainless steel round pipe used for?
Q: What is the difference between a stainless steel round pipe and stainless steel tubes?
Q: Can you tap stainless steel round pipe?
Q: Is stainless steel round pipe stronger than steel pipe?
Q: What is the difference between 304 and 316 stainless steel round pipe?
Q: What is the difference between stainless steel and 304 stainless steel?
Q: Can you bend 304 stainless steel round pipe?
Q: What are the grades of round pipe?
Grade 2 steel pipes are mainly used for structural works (like welding works, shed works, etc.)
Q: Will a magnet stick to stainless steel round pipe?
Q: What is one advantage of stainless steel round pipe?
Q: How long do stainless steel round pipes last?
Q: How do you join stainless steel round pipe without welding?
Q: Which is better copper or stainless steel round pipe?
Q: Which is more expensive 304 or 316 stainless steel?
Q: Is stainless steel round pipe good?
Q: Why use stainless steel round pipe?
Q: What is the difference between 304 stainless steel and 316 stainless steel?
Type 304 stainless steel is perhaps the most common type used because it is corrosion-resistant and easy to sanitize. This type of steel is often used for food and beverage applications or in building applications.
Type 316 stainless steel is also corrosion-resistant and easy to clean but is more resistant to corrosion resulting from chemicals and solvents. Because of this, 316 stainless steel is preferred for industrial and surgical applications, or outdoor or marine applications due to its resistance to chloride corrosion.
Q: Does stainless steel round pipe rust?
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