Stainless steel pipe, composed of a nickel and chromium alloy, is commonly utilized in fluid or gas transportation systems due to its corrosion resistance, particularly against oxidation, making it suitable for high-temperature and chemical environments. Typically manufactured through welding or extrusion processes, welded pipes involve shaping steel and welding seams, while extrusion forms seamless products by heating steel rods and piercing them. Although often used interchangeably, “pipe” and “tube” have distinct measurements and purposes: pipes are measured by interior diameter for fluid and gas conveyance, while tubes, measured by outside diameter and wall thickness, are utilized in structural components and part construction.
Types of Stainless Steel Pipe
- Seamless Pipe
A seamless pipe is one that contains no seams or weld joints. Because of the metal, it can withstand high levels of pressure as well as high temperatures. It is also used in numerous oil and gas applications. In addition, it is used in the mechanical and engineering industries. As a result, seamless pipes are extremely versatile, and they are always thoroughly inspected to ensure material quality.
- Welded Pipe
Welded pipes can be found in almost any industry due to their versatility. They outperform in terms of corrosion resistance but not pressure resistance. Welded pipes, on the other hand, are far more cost-effective than most other piping methods. Because of the materials used and their lightweight nature, it may also provide the best value for money.
- Flanges
Pipe flanges are another critical component of your overall piping setup. Slip-ons, blinds, lap joints, threaded, and semis are among the many styles available. To ensure dependability, these pipe flanges are made of durable and sturdy materials. They also make pipe flanges from high-quality materials.
- Spectacle Blinds
People will usually use spectacle blinds, spades, and spacers for temporary or long-term solutions that is allowed for the isolation of piping sections. If a piece of machinery or a section of piping needs to be inspected, spectacle blinds will be used to isolate a specific section of the piping. They will also maintain the overall system during the process. It is recommended that you rigorously test the dependability of your spectacle blinds to stay safe because it is such an important role that is critical to your safety. Because each case is different, it is advised that you consult with a professional before investing large sums of money in spectacle blinds.
Characteristics of Stainless Steel Pipe
- Corrosion Resistance
Almost all stainless steel pipes on the market are iron-based alloys with at least 10.5 percent chromium content. When chromium is present in an alloy, it forms a self-healing or protective oxide layer. Furthermore, the formation of an oxide layer contributes to the corrosion resistance of stainless steel pipes. Intact corrosion resistance can be achieved regardless of fabrication method due to the self-healing properties of the oxide layer. Even if the stainless steel pipe surface is damaged or cut, it can self-heal and has a high corrosion resistance.
Work Intensification
One of the most significant benefits of work hardening stainless steel pipe grades is that it significantly increases and improves metal strength while also assisting in cold working. Aside from that, the combination of annealing and cold working stages is simple to use in order to provide adequate strength to fabricated components. Besides that, stainless steel pipe can self-heal and has a high corrosion resistance even if the pipe surface is damaged or cut.
- Strength and Formability
The strength of stainless steel pipe varies according to grade. In comparison to mild strength, strength remains somewhat constant in soft conditions. Austenitic steel, which is softer, has a high elongation and ductility. As a result, after a lengthy series of semi-fabrication, it can be cold worked to produce a finished product. Furthermore, toughness and strength must be effectively combined to achieve the desired result.
Ferritic stainless steel pipes are also extremely ductile and strong. Following heat treatment produces hardness and high strength in martensitic steel pipes.
Ductility
The percent elongation is responsible for ductility when performing a tensile test. The elongation of austenitic stainless steel is very high. The elongation of austenitic stainless steel is very high. Due to its high work hardening and ductility rates, austenitic stainless steel can form and work in a variety of processes, including deep drawing.
High Strength
Stainless steel pipe has a higher tensile strength than mild steel. Duplex stainless steel is generally stronger than austenitic steel. As a result, martensitic and precipitation hardening grades have the highest tensile strength. Furthermore, these grade types are twice as strong as other grades.
Magnetic Response
Magnetic response generally attracts stainless steel. Austenitic grades are purely nonmagnetic, though cold working can induce it in a few austenitic grades. Non-magnetic grades, on the other hand, such as 316 and 310, can be cold worked.
Types of Industry where Stainless Steel Pipe is Used
i. Oil and Gas
Technology is critical in the oil and gas industries. As the depths at which we search for oil have increased, so has the demand for corrosion-resistant piping. Hence, there will be more strain putting on the duplex and super duplex stainless steel pipes that we use. Corrosive environments can be extremely harmful. Besides that, if the damage is not repaired, the pipes will easily burst, rendering them unusable for deeper depths. Therefore, it is critical to have strong pipes in the oil and gas industry.
ii. Nuclear Power
It is difficult to extract useful energy from atomic nuclei. Because of cooling requirements, the majority of today’s nuclear reactors are located near the coast. As a result, it will use much of the water to cool these reactors comes from the sea. And it must be corrosion resistant. Stainless steel pipe is critical in the nuclear power industry. This is because of its capable of resisting corrosion caused by seawater.
iii. LNG Liquefied natural gas (LNG) is natural gas that has been cooled to -260 degrees Fahrenheit. So, it can be safely transported to meet the growing demand for natural gas. Also, natural gas is not always feasible or cost-effective to transport via pipelines. So, it is instead transported in liquid form via cryogenic sea vessels and road tankers. As a result, having the proper piping in place to provide safe and cost-effective LNG transport to hard-to-reach areas of the country or the world is critical.
Benefits of Stainless Steel Pipe
Stainless steel is a highly adaptable material that can be used in a variety of indoor and outdoor applications. Using stainless steel pipe for your project has several benefits, including:
- Lightweight
- Durable
- Long-lasting Capable of handling high flow rates
- Simple to machine
- Scratch resistance
- Simple to clean
- Low-maintenance
- Outstanding corrosion resistance
- Recyclable and eco-friendly material
Product Tags
Steel Pipe Seamless pipes Welded pipes Industrial pipes Construction pipes Plumbing pipes Galvanized pipes Black steel pipes Stainless steel pipes Carbon steel pipes Corrosion-resistant pipes High-pressure pipes Low-pressure pipes Hydraulic pipes Gas pipes Oil pipes Water pipes Structural pipes Spiral pipes ERW Pipes Electric Resistance Welding pipes LSAW Pipes Longitudinal Submerged Arc Welding pipes SSAW pipes Spiral Submerged Arc Welding pipes API pipes American Petroleum Institute pipes ASTM pipes American Society for Testing and Materials pipes ASME pipes American Society of Mechanical Engineers pipes ANSI pipes American National Standards Institute pipes ISO pipes International Organization for Standardization pipes 1/4″ pipes 3/8″ pipes 1/2″ pipes 3/4″ pipes 1″ pipes 1-1/4″ pipes 1-1/2″ pipes 2″ pipes 2-1/2″ pipes 3″ pipes 3-1/2″ pipes 4″ pipes 5″ pipes 6″ pipes 8″ pipes 10″ pipes 12″ pipes 14″ pipes 16″ pipes 18″ pipes 20″ pipes 22″ pipes 24″ pipes 26″ pipes 28″ pipes 30″ pipes 32″ pipes 34″ pipes 36″ pipes 38″ pipes 40″ pipes 42″ pipes 44″ pipes 46″ pipes 48″ pipes SCH 10 pipes SCH 20 pipes SCH 30 pipes SCH 40 pipes SCH 60 pipes SCH 80 pipes SCH 100 pipes SCH 120 pipes SCH 140 pipes SCH 160 pipes SCH STD pipes SCH XS pipes SCH XXS pipes SCH 10s pipes SCH 40s pipes SCH 80s pipes ANSI B36.10 pipes ANSI B36.19 pipes ASTM SA pipes A106 Gr A pipes A106 Gr B pipes A106 Gr C pipes API 5L X42 pipes API 5L X46 pipes API 5L X52 pipes API 5L X60 pipes API 5L X65 pipes API 5L X70 – PSL1/ 2 pipes ASTM SA/A333 Grade 6 pipes ASME SA/A333 Grade 6 pipes ASTM SA/A 335 Grade P5 pipes ASTM SA/A 335 Grade P11 pipes ASTM SA/A 335 Grade P22 pipes ASTM SA/A 335 Grade P91 pipes ASME SA/A 335 Grade P5 pipes ASME SA/A 335 Grade P11 pipes ASME SA/A 335 Grade P22 pipes ASME SA/A 335 Grade P91 pipes UNS N02200 pipes UNS N02201 pipes UNS N04400 pipes UNS N06600 pipes UNS N06601 pipes UNS N06625 pipes UNS N08810 pipes UNS N08811 pipes UNS N08825 pipes UNS N010276 pipes Nickel 200 pipes Nickle 201 pipes Monel 400 pipes Inconel 600 pipes Inconel 601 pipes Inconel 625 pipes Incoloy 800H pipes Incoloy 800HT pipes Inconel 825 pipes Hastelloy C276 pipes High temperature pipes Flanged pipes Fitting pipes UNS S31803 pipes UNS S32205 pipes UNS S32750 pipes UNS S32760 pipes Schedule pipes Standard weight pipes Extra strong pipes High-temperature pipes Low-temperature pipes Heat exchanger pipes Boiler pipes Heat resistant pipes Nickel coated pipes Fire-resistant pipes Abrasion-resistant pipes Impact-resistant pipes Rust-resistant pipes Chemical-resistant pipes Underground pipes Aboveground pipes Offshore pipes Onshore pipes Utility pipes Transmission pipes Distribution pipes Sewer pipes Drain pipes Irrigation pipes Foundation pipes Reinforced pipes Slotted pipes Grooved pipes Flanged pipes Specialized pipes
Welded Line Pipe | |
Thickness | 1/8" (6mm), 1/4" (8mm), 3/8" (10mm), 1/2" (15mm), 3/4" (20mm), 1" (25mm), 1-1/4" (32mm), 1-1/2" (40mm), 2" (50mm), 2-1/2" (65mm), 3" (80mm), 3-1/2" (90mm), 4" (100mm), 5" (125mm), 6" (150mm), 8" (200mm) |
Standard | API 5L, ASME/ANSI B36.10 |
NDT | API 5L Annex E (as per client requirement) |
Heat Treatment | As per request |
Coating | Internal and external coating available as per request |
Specification | |
Carbon Steel | API 5L Gr.B |
High Yield Carbon Steel | API 5L X42/ 46/ 52/ 60/ 65/ 70 - PSL1/2 |
Low Temp Carbon Steel | ASME/ASTM SA/A671 CC65 CL22 |
Stainless Steel | ASME/ASTM SA/A312 304/304L, 316/316L, 317/317L,321/321H,310 |
Duplex / Super Duplex | UNS S31803, S32205, S32750, S32760, S31254 |
Size Range | |
ERW | 2" (50mm), 2-1/2" (65mm), 3" (80mm), 3-1/2" (90mm), 4" (100mm), 5" (125mm), 6" (150mm), 8" (200mm), 10" (250mm), 12" (300mm), 14" (350mm), 16" (400mm), 18" (450mm) |
LSAW | 16" (400mm), 18" (450mm), 20" (500mm), 22" (550mm), 24" (600mm), 26" (650mm), 28 (700mm)", 30" (750mm), 32" (800mm), 34" (850mm), 36" (900mm), 38" (950mm), 40" (1000mm), 42" (1050mm), 44" (1100mm), 46" (1150mm), 48" (1200mm), 50" (1250mm), 52" (1300mm), 54" (1350mm), 56" (1400mm), 58" (1450mm), 60" (1500mm) |
Seamless Pipe | |
Size Range | 1/4" (8mm), 3/8" (10mm), 1/2" (15mm), 3/4" (20mm), 1" (25mm), 1-1/4" (32mm), 1-1/2" (40mm), 2" (50mm), 2-1/2" (65mm), 3" (80mm), 3-1/2" (90mm), 4" (100mm), 5" (125mm), 6" (150mm), 8" (200mm), 10" (250mm), 12" (300mm), 14" (350mm), 16" (400mm), 18" (450mm), 20" (500mm), 22" (550mm), 24" (600mm), 26" (650mm), 28 (700mm)", 30" (750mm), 32" (800mm), 34" (850mm), 36" (900mm), 38" (950mm), 40" (1000mm), 42" (1050mm), 44" (1100mm), 46" (1150mm), 48" (1200mm) |
Schedule | SCH 10, SCH 20, SCH 30, SCH 40, SCH 60, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160 SCH STD, SCH XS, SCH XXS, SCH 10s, SCH 40s, SCH 80s |
Standard | ASME/ANSI B36.10, B36.19 |
Specification | |
Carbon Steel | ASME/ASTM SA/A106 Gr A/ Gr B/ Gr C |
High Yield Carbon Steel | API 5L X42/ 46/ 52/ 60/ 65/ 70 - PSL1/ 2 |
Low Temp Carbon Steel | ASME/ASTM SA/A333 Grade 6 |
Chrome Moly | ASME/ASTM SA/A 335 Grade P5/ P11/ P22/ P91 |
Stainless Steel | ASME/ ASTM SA/A312 TP304/304L, 316/316L, 309, 309H, 310S, 310H, 317/317L, 321, 321H, 347, 347H, 904L |
Duplex/ Super Duplex | ASME/ASTM SA/A790 UNS S31803, S32205, S32750, S32760 |
Nickel Alloy | ASME/ASTM SB163, 168, 424, 443, 575 UNS N02200 (Nickel 200), UNS N02201 (Nickle 201) UNS N04400 (Monel 400), UNS N06600 (Inconel 600) UNS N06601 (Inconel 601), UNS N06625 (Inconel 625) UNS N08810 (Incoloy 800H), UNS N08811 (Incoloy 800HT) |
Remark | HIC, PED 2014/68/EU, NACE MR0175, NORSOK available |
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