Steel Pipe Guide: Stainless Steel Pipe Dimensions, Weight Chart & Advantages Explained

Steel pipes are a type of steel product with an extremely wide range of applications and can be categorized into many types based on manufacturing processes or materials. At ALLLAND, our specialty is thick-walled LASW steel pipes. However, we can also supply other steel pipe products.

Based on material, steel pipes can be divided into three main categories: carbon steel pipes, alloy steel pipes, and stainless steel pipes.

In this article, I will introduce you to the dimensions and applications of stainless steel pipes to help guide your material selection for projects.

Steel Pipe Type: Stainless Steel Pipe

Depending on the material, steel pipes are classified into carbon steel pipes, alloy steel pipes, and stainless steel pipes.

Stainless steel pipes are a very important category of steel pipes and can be further classified into seamless pipes and welded pipes based on the manufacturing process.

It is a pipe made of chromium-based alloy steel (Cr ≥ 10.5%), on the surface of which a “passive film” forms, blocking the penetration of oxygen atoms and giving the stainless steel pipe exceptional corrosion resistance.

The primary classification method for stainless steel pipes in the industry is based on their chemical composition, which includes:

Austenitic Stainless Steel: Accounts for over 70% of the market.

Grades: 304, 304L, 316, 316L, 321

Ferritic Stainless Steel

Grades：430, 446

Martensitic Stainless Steel

Grades:410, 420, 431

Duplex Stainless Steel

Grades:410, 420, 431

PH Stainless Steel(Precipitation-Hardening Stainless Steel)

Grades:17-4PH, 15-5PH

Properties of Stainless Steel Pipes

1. Corrosion resistance

Stainless steel pipes contain at least 10.5% chromium (Cr). This chemical composition forms a dense passivation film on the surface of the steel, which is key to the corrosion resistance of stainless steel pipes.

In contrast to the galvanized coating on ordinary carbon steel pipes, once the galvanized layer is damaged, corrosion typically sets in very quickly. The passivation film on stainless steel pipes, however, can self-repair and offers excellent resistance to oxidation, acid and alkali corrosion, and chloride ion corrosion (316 stainless steel and duplex stainless steel exhibiting even stronger resistance).

2. High strength and pressure resistance

Stainless steel pipes possess exceptional mechanical and physical properties. They feature high strength, high toughness, and excellent pressure-bearing capacity.

The common 304 (austenitic) grade has a tensile strength of ≥515 MPa, a yield strength of ≥205 MPa, and an elongation of ≥40%. It offers good ductility and is non-magnetic, making it suitable for deep processing and forming.

Grade 2205 (duplex steel) has a tensile strength of ≥620 MPa, a yield strength of ≥450 MPa, and an elongation of ≥25%. Its strength is approximately twice that of 304, while also offering excellent toughness, allowing for effective wall thinning.

3. High- and low-temperature resistance

Stainless steel’s ability to resist oxidation and maintain strength in high-temperature environments essentially depends on the content of alloying elements; different grades exhibit varying high-temperature performance.

Austenitic stainless steel, as the primary heat-resistant material, offers strong oxidation resistance and is not prone to embrittlement at high temperatures, making it widely used in high-temperature, oxidation-prone environments such as boilers and heat exchangers.

Not all stainless steels are resistant to low temperatures. Austenitic stainless steel can maintain its toughness at extremely low temperatures (–196°C) without undergoing a brittle-to-ductile transition.

Martensitic stainless steel has poor low-temperature performance, while ferritic stainless steel is prone to brittle fracture at low temperatures and is therefore unsuitable for cryogenic engineering.

Duplex stainless steel generally performs well down to around –50°C but is not suitable for cryogenic environments.

4. Hygiene and Environmental Performance

Stainless steel pipes have smooth inner walls with an absolute roughness of 0.008 mm, which is far lower than the 0.15 mm of galvanized pipes, making them resistant to scaling and bacterial growth. Stainless steel is chemically stable and does not leach contaminants; pipes made of 304-grade or higher stainless steel are internationally recognized as “the ideal piping material for direct drinking water.”

Due to its exceptionally long service life—which can span up to a century—and its maintenance-free nature, stainless steel consumes fewer resources over its entire lifecycle than ordinary carbon steel pipes with anti-corrosion coatings. Furthermore, stainless steel is 100% recyclable; when it reaches the end of its service life, it does not require downgraded processing and can be remelted into new stainless steel.

5. Machinability and Weldability

During processing operations such as forming, cutting, bending, and welding, stainless steel pipes are resistant to cracking, exhibit controllable deformation, and deliver consistent weld quality.

Austenitic stainless steels (such as 304 and 316) exhibit excellent cold working properties and are suitable for nearly all common welding methods, resulting in well-formed welds with few defects.

The superior machining and welding properties of stainless steel pipes can effectively improve construction efficiency and ensure project quality.

1. Surface Aesthetics

One of the key reasons stainless steel is so popular in modern architecture, home design, and industry is its attractive appearance.

The surface of stainless steel pipes can be treated through processes such as brushing, mirror polishing, sandblasting, and titanium plating to achieve a variety of visual effects and textures, including mirror finishes, satin finishes, and matte finishes.

Stainless Steel Pipe Specifications Range

Common outer diameter range for stainless steel pipes: 6 mm – 630 mm (1/8“ – 24”)

Common wall thickness range: 0.5–40 mm or more

Common length: 6 m, or as required

SS Pipe Dimensions & Weight Chart

Stainless Steel Density

For common stainless steel pipes (304, 316), a density of 7.93 g/cm³ may be used for theoretical weight calculations.

Theoretical weight = 0.02466 × (OD − WT) × WT

OD/WT-mm

Why Choose Our Stainless Steel Pipes

The advantages of stainless steel pipes are detailed above; they offer excellent corrosion resistance, high strength, and good toughness.

When selecting stainless steel pipes, material properties and supplier capabilities are equally important. At ALLLAND, we not only provide high-quality stainless steel pipes but also ensure that every pipe exceeds industry standards through our industry-leading manufacturing capabilities and comprehensive quality assurance system, with 100% traceability accuracy.

Our smart manufacturing capabilities are far ahead of the competition. With two JCOE production lines and five anti-corrosion coating lines, we have an annual production capacity of 200,000 metric tons of high-end steel pipes and 4 million square meters of anti-corrosion coatings. We sell directly from our own factories, ensuring transparent pricing.

The smooth inner walls of stainless steel pipes effectively improve transportation efficiency. This material is eco-friendly and 100% recyclable, aligning with the principles of sustainable development. Furthermore, our proprietary “3PE + Cathodic Protection” dual-effect corrosion protection system extends the service life of the pipeline to over 50 years.

We manufacture stainless steel pipes in strict compliance with international standards, offering specifications such as API 5L, ASTM A53, ASTM A671, ASTM A672, ASTM A252, EN 10217, EN 10219, ISO 3183, AS/NZS 1579, JIS G 3444, DIN 2458, and more, meeting your diverse needs in petroleum, chemical, marine, and other engineering projects.

We are not merely a steel pipe manufacturer; we are a long-term, trusted partner. Guided by our core philosophy of “Steel Craftsmanship, Intelligent Future,” we serve every client dedicated to pipeline transportation and engineering construction.

Applications of Stainless Steel Pipe

1. Oil and Gas Industry

In these operating conditions, the transported media typically include crude oil, natural gas, liquefied petroleum gas (LPG), and chemical liquids.

Due to their excellent corrosion resistance and high strength, stainless steel pipes—commonly made of grades 304, 316, and 316L—are widely used in chemical plant piping, oil refinery pipelines, and offshore oil and gas platform piping.

2. Municipal and Construction Industries

Thanks to their long service life, aesthetic appeal, and environmental friendliness, these products are commonly used in urban water supply networks, fire protection systems, and large-scale pipe truss projects.

3. Energy and Power Industry

Typical grades include 304H, 321H, and 347H, which are used in high-temperature, high-pressure, and oxidation-prone environments such as boiler piping and heat exchanger piping in power plants.

4. Automotive and Machinery Manufacturing

Automotive exhaust systems, hydraulic machinery piping, and similar components require materials that are heat-resistant and corrosion-resistant. Typical materials include 304, 321, 409, and 430.

5. Offshore Engineering and Shipbuilding

The marine environment imposes extremely stringent requirements on the corrosion resistance of steel pipes, making stainless steel pipes an indispensable material in this field.

Materials such as austenitic stainless steel 316 and duplex stainless steel 2205 are particularly suitable for this application.

FAQ

What is the difference between carbon steel pipes and stainless steel pipes?

First, due to differences in chemical composition, stainless steel pipes are more corrosion-resistant than carbon steel pipes.

While they are more expensive than carbon steel pipes, their total lifecycle maintenance costs are lower.

What are the standard dimensions for stainless steel pipes?

The standard dimensions for stainless steel pipes are not fixed; they are defined by the international standard system, NPS/DN, and Schedule.

The outer diameter is fixed, while the wall thickness varies according to the SCH. Common sizes range from 1/2“ to 24”, with lengths of 6 or 12 meters; custom sizes are available.

What is the density of stainless steel?

The density of stainless steel varies depending on the material and composition, but a common value is 7.93 g/cm³.