Seamless stainless steel hydraulic pipes
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Seamless stainless steel pipes
Precision seamless stainless steel pipes - resistant to aggressive environment, fluids
Seamless stainless steel hydraulic pipes are high-quality products that find application in the most demanding environments. Their main feature is corrosion resistance, which makes them ideal for installations where pipes are exposed to moisture, chemicals or high temperatures.. Precision seamless hydraulic pipes, cold drawn HPL, stainless steel according to ASTM A269/213 (A.W), EN 10216-5 (EN10305) tolerance according to EN ISO1127 - D4/T3. Length 6m, 3m, 2m, 1m. Pipes intended for high-pressure hydraulic installations. Pressure stainless steel pipes intended for the construction of high-pressure installations. We have thin-walled and thick-walled stainless steel pipes ( thin-walled and thick-walled ). This type of pipes is designated by customers as INOX. Material: 1.4404/TP316L, Hardness HRB max 80.
Types of stainless steel used in pipes
1. Austenitic stainless steel (e.g., 1.4404 / TP316L)
The most commonly used stainless steel grade for hydraulic pipes is 1.4404 (TP316L). It is an austenitic steel characterized by high corrosion resistance and excellent weldability. The properties of stainless steel pipes 1.4404 (TP316L) include : ✔ Corrosion resistance: Thanks to the presence of chromium (16-18%), nickel (10-14%) and molybdenum (2-3%), 1.4404 steel is resistant to atmospheric conditions, aggressive chemicals and intergranular corrosion. ✔ Low carbon content (L - Low Carbon): The reduced amount of carbon (max. 0,03%) minimizes the risk of carbide precipitation, which could weaken the corrosion resistance of welds. ✔ High temperature resistance: 1.4404 steel is resistant to temperatures up to approx. 870°C, making it an ideal material for demanding industrial conditions. ✔ Excellent machinability: It can be easily cut, bent and formed, which makes it easier to adapt the pipes to specific systems.
2. Ferritic stainless steel (e.g., 1.4512, AISI 409)
It is a more economical version of stainless steel, but has lower corrosion resistance than austenitic steel. It contains less nickel, which lowers production costs, but may have poorer weldability and flexibility. ✔ Lower price compared to 316L ✔ High temperature resistance, but lower than in austenitic steels ✔ Used in less demanding applications, e.g., in exhaust systems
3. Duplex stainless steel (e.g., 1.4462)
It is more resistant to corrosion and mechanical damage than austenitic steel, but harder to process and more expensive. Used where exceptional resistance to aggressive environments is required (e.g., marine installations, chemical industry). ✔ Exceptional mechanical strength – up to 2 times greater than austenitic steel ✔ Very high resistance to pitting and stress corrosion ✔ Used mainly in extreme applications.
Applications of stainless steel pipes:
If corrosion resistance, durability and safety are key, the choice should be 316L (1.4404) stainless steel. For applications where costs are a priority and additional anti-corrosion protection is possible, carbon steel can be considered. In hydraulic and industrial systems, stainless steel is the best choice, especially in environments exposed to moisture, chemicals and high temperatures. Precision seamless stainless steel pipes are used in the following industries : ✔️ Food industry – thanks to its stainless properties, the pipes are perfectly suited for liquid and gas transport systems under conditions that require hygiene and resistance to external factors. ✔️ Chemical and petrochemical industry – resistance to chemical substances makes them reliable in transfer installations for aggressive liquids or technical gases. ✔️ Marine industry – ideal in environments with high humidity and exposed to salt water. ✔️ Power hydraulics – used in hydraulic systems where durability and reliability are important under high-pressure operating conditions.
Precision stainless steel pipes made of 316l steel
What is 316 stainless steel ? 316 stainless steel is a high-quality alloy of iron, chromium, nickel and molybdenum, which is characterized by excellent corrosion resistance, especially in aggressive environments such as sea water or chemicals. Thanks to the addition of molybdenum (about 2-3%), it has significantly better resistance to pitting and crevice corrosion compared to the popular 304 steel. Chemical composition of 316 stainless steel. The typical chemical composition of AISI 316 steel looks as follows: Chromium (Cr): 16-18%, Nickel (Ni): 10-14%, Molybdenum (Mo): 2-3%, Carbon (C): max. 0,08%, Manganese (Mn): max. 2%, Silicon (Si): max. 1%, Phosphorus (P): max. 0,045%, Sulfur (S): max. 0,03%, Iron (Fe): remaining part. Thanks to such a composition, 316 stainless steel shows excellent resistance to acids, salts and high temperatures.
Properties of 316l stainless steel :
✔️ Very high corrosion resistance, especially in marine and chemical environments. ✔️ Resistance to high temperatures – it can operate continuously at temperatures up to about 870°C. ✔️ Excellent mechanical strength – high hardness and abrasion resistance. ✔️ Good weldability – easy to process using welding methods. ✔️ Oxidation resistance – thanks to chromium, it forms a protective layer on the surface. ✔️ Non-toxicity and biocompatibility – can be used in medicine and the food industry.
Precision stainless steel pipes dimensions
The most popular dimensions of stainless steel pipes are : 6mm, 8mm 10mm, 12mm, 15mm, 16mm, 18mm, 20mm, 22mm, 25mm, 28mm, 30mm, 35mm, 38mm, 40mm, 42mm.
Fasteners for connecting stainless steel pipes
For stainless steel hydraulic pipes we offer a wide range of stainless steel fittings, which ensure the durability, tightness and reliability of every installation. Our fittings have been designed to work in demanding conditions, such as high humidity, the presence of aggressive chemicals or extreme temperatures. Stainless connectors have excellent corrosion resistance – stainless steel guarantees long-lasting protection against moisture and external factors. Perfect fit – the fittings cooperate precisely with stainless steel pipes, ensuring maximum tightness and safety. Versatility of applications – Ideal for hydraulic, industrial, food, chemical and many other systems. Wide offer – You will find fittings in various sizes and types, tailored to your needs. Our offer also includes polypropylene pipe mounting clamps.
Stainless steel tubes
Stainless steel tubes are precision seamless pipes designed for the construction and modernization of power hydraulic installations, where high corrosion resistance, durability and stability of operating parameters count. Made of stainless steel with an appropriate chemical composition, they ensure a long service life even in environments exposed to moisture, aggressive media or variable temperatures. Thanks to their seamless construction, stainless steel pipes maintain a uniform material structure over their entire length, which translates into safety and repeatability of the system's operation.
What distinguishes seamless stainless steel hydraulic pipes
Seamless stainless steel hydraulic pipes are characterized by high resistance to pitting and crevice corrosion, which is particularly important in installations operating outdoors or in contact with liquids of increased chemical aggressiveness. The smooth internal surface limits pressure losses and promotes the proper flow of the medium, while precise dimensional tolerances facilitate the assembly of hydraulic fittings. Such tubes are adapted to work under high pressure and meet the requirements set for industrial installations.
Application of stainless steel tubes in power hydraulics
Stainless steel tubes find application in hydraulic systems of industrial machinery, technological lines, chemical installations, food plants and in systems operating in environments with elevated hygienic requirements. They are used where standard steel pipes could be subject to accelerated wear or corrosion. They also prove themselves in mobile hydraulics, the marine industry and in installations exposed to atmospheric factors.
Why seamless stainless steel pipes are used
Seamless stainless steel pipes for power hydraulics ensure high reliability and operational safety. The lack of a weld eliminates a potential point of structural weakness, which is important at high operating pressures. Stainless steel retains its mechanical properties for a long time, which reduces the risk of leaks and service downtime. Additionally, these pipes are resistant to material aging and easy to keep clean.
Stainless steel hydraulic pipes in the Hydron offer
The Hydron offer includes seamless stainless steel hydraulic pipes designed for professional industrial applications. A wide selection of diameters and wall thicknesses allows the tubes to be adapted to specific installation parameters. Constant stock availability and technical support at the selection stage make Hydron a proven supplier of stainless steel tubes for power hydraulics. Thanks to experience and technical background, it is possible to choose the right solution for demanding applications where durability, safety and stability of the system's operation count.
Stainless steel pipes catalog ?
Stainless steel pipes catalog - in Hydron they do not exist in the form of a single, closed PDF file for download, because the offer has been deliberately organized in a clear way directly on the store's website. Instead of a classic catalog, stainless steel pipes are divided into legible categories according to type, application, and technical parameters, which allows you to quickly find the right product without having to browse extensive lists. Such a layout acts as an interactive online catalog – the user has access to current stock levels, detailed descriptions, and up-to-date technical data, thanks to which the stainless steel pipes catalog is always current and easy to adapt to a specific hydraulic installation.
Gallery
expand text Stainless steel pipe sizes
What are stainless steel pipes and how are their sizes designated?
Stainless steel pipes are installation and structural elements made of corrosion-resistant steels. Their sizes are given in the metric or imperial system, depending on the standard and application. In practice, three parameters are key: outer diameter (OD), wall thickness (WT) and commercial section length.
Metric system (mm)
In the metric system, the size is written as outer diameter × wall thickness, e.g. Ø 12 × 1 mm, Ø 25 × 2 mm, Ø 60,3 × 3 mm. This notation ensures precise matching to fittings and valves in the European standard, and also facilitates machining and installation design.
Imperial system (DN / NPS and Schedule)
In the imperial system, nominal designations DN or NPS are used, which are not directly equal to the diameter in millimeters. For example, DN15 usually corresponds to a pipe with an outer diameter of about 21,3 mm, and DN25 to about 33,7 mm. Additionally, the wall thickness is described by the Schedule class (e.g., Sch 5S, 10S, 40S), which affects the internal diameter and permissible operating pressure.
Typical dimension ranges
Outer diameters in practice range from about 6 mm to 508 mm (up to 20"). Wall thicknesses start from 0,5 mm in thin-walled decorative pipes and reach up to over a dozen millimeters in pipes for industrial and pressure applications. Standard commercial lengths are most often 6 m, however, shorter and longer sections cut to size are also available.
Dimensional and quality standards
The most commonly encountered standards are EN 10216-5 and EN 10217-7 for pressure applications, EN 10312 for thin-walled sanitary installations, as well as ASTM A312, A269 and A213 in the American standard. The choice of standard affects dimensional tolerances, surface roughness and requirements regarding quality testing.
Example metric sizes
Popular dimensions include, among others: Ø 6 × 1 mm, Ø 8 × 1 mm, Ø 10 × 1 mm, Ø 12 × 1 mm, Ø 14 × 1,5 mm, Ø 16 × 1,5 mm, Ø 18 × 1,5 mm, Ø 20 × 2 mm, Ø 25 × 2 mm, Ø 30 × 2 mm, Ø 38 × 2 mm, Ø 42,4 × 2 mm, Ø 48,3 × 2 mm, Ø 60,3 × 2–3 mm, Ø 76,1 × 2–3 mm, Ø 88,9 × 2–3 mm, Ø 114,3 × 3 mm.
Example imperial equivalents
DN15 ≈ ½" (OD ≈ 21,3 mm), DN20 ≈ ¾" (OD ≈ 26,9 mm), DN25 ≈ 1" (OD ≈ 33,7 mm), DN32 ≈ 1¼" (OD ≈ 42,4 mm), DN40 ≈ 1½" (OD ≈ 48,3 mm), DN50 ≈ 2" (OD ≈ 60,3 mm), DN65 ≈ 2½" (OD ≈ 76,1 mm), DN80 ≈ 3" (OD ≈ 88,9 mm), DN100 ≈ 4" (OD ≈ 114,3 mm). The actual inner diameter depends on the adopted Schedule class.
Tips for size selection
When selecting the pipe size, it is necessary to consider the required flow of the medium, permissible pressure drops, working pressure, working temperature and compatibility with the applied valves and fittings. In industrial installations, it is also important to select the appropriate Schedule class or wall thickness to ensure an adequate safety margin.