SMO 254 Pipe Manufacturer & Supplier
- Home
- Steel Pipes
- SMO 254 Pipe
Midland Alloys Inc. is a trusted smo 254 pipe manufacturer and supplier. These versatile pipes are constructed from high-quality raw materials known for their exceptional corrosion resistance and weldability. Our 254 SMO seamless pipe is used in saltwater applications, flue gas desulfurization scrubbers, tall oil distillation columns, and food processing equipment. We offer seamless and welded types in different 254 SMO Pipe Sizes and schedules. Our pipes meet ASTM A312, A269, A213, A249, and A358 standards. The SMO 254 pipes technical details, pricing, and properties are covered below.
What is a SMO pipe?
SMO 254 (UNS S31254) is a super austenitic stainless steel with high levels of chromium, molybdenum, and nitrogen. SMO 254 Pipes offer excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. These pipes have better strength than standard austenitic grades. The 254 SMO chemical composition provides reliable performance in demanding environments. 254 SMO Seamless tubes provide uniform strength and a smooth finish, while ASTM A312 UNS S31254 ERW Pipe offers cost efficiency for larger sizes. These pipes undergo hot or cold forming, followed by post-process annealing to restore corrosion resistance properties.
Benefits of SMO UNS S31254 Pipe
- Handles high temperatures without losing strength or structural integrity.
- Cost-effective due to low maintenance requirements.
- Maintains durability in highly corrosive chemical environments.
- Offers excellent weldability and formability for complex bends and custom fabrication.
- Scaling and oxidation resistance even under thermal cycling.
- Ensures consistent quality and meets ASTM A312 standards.
The main differences between 254 SMO stainless steel and 316 stainless steel is alloy composition and corrosion performance. 254 SMO (UNS S31254) has higher levels of molybdenum, nitrogen, and chromium. This makes pipes more resistant to pitting, crevice corrosion, and stress corrosion cracking in chloride-rich environments. It also has greater mechanical strength and higher PREN values than 316. 316 stainless steel is commonly used for general corrosion protection. It lacks the increased durability and service life like 254 SMO in harsh chemical, marine, or industrial environments.
Specification of SMO 254 Pipe
Seamless Pipe OD : 1/8 -12" NPS
Welded Pipe OD : 6.35 to 114.3 mm
EFW Pipe Size : 6″ NB – 24″ NB
ASTM A312, A358 / ASME SA312, SA358
Seamless, ERW, Welded, Fabricated
Round, Square, Rectangular, Hydraulic Etc
Single Random, Double Random & Cut Length.
Plain End, Beveled End, Treaded
SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS
Bright, Polish, and Black
Types of SMO 254 Pipes
Manufacturing Types
-
Seamless PipeMade without welds using extrusion or hot rolling.
-
Welded PipeFormed by welding steel strips or plates, often in longer lengths.
-
ERW (Electric Resistance Welded) PipeBuilt with high‑frequency welding of cold‑formed steel.
-
EFW (Electric Fusion Welded) PipeUses electric fusion welding, ideal for large diameters.
-
LSAW (Longitudinal Submerged Arc Welded) PipeMade by bending and welding plates along their length.
Pipe Forms
-
Round PipeTraditional cylindrical form for general use.
-
Square PipeEqual‑sided designs for systems needing flat edges.
-
Rectangular PipeFlat‑surfaced option for design‑specific needs.
-
Hydraulic PipeManufactured for hydraulic systems with tight tolerances.
Contact us today to discuss how Stainless Steel 310/310S Pipes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.
Technical Details & Delivery Condition
254 SMO chemical composition includes a balanced mix of chromium, molybdenum and nitrogen, which improves strength and corrosion resistance. These details help precise material selection for demanding environments.
| Grade | Density | Melting Point | Tensile Strength (MPa) | Yield Strength (0.2% Offset) (MPa) | Elongation (%) |
| SMO 254 | 8.0 g/cm³ | 1320 – 1390 ℃ | 650 | 300 | 35 |
Physical properties of UNS S31254 pipe highlight key factors like density, melting range, and tensile strength. Knowing these values helps ensure safe design, performance, and compatibility for critical applications.
| Grade | Density (g/cm³) | Melting Point (°C) | Tensile Strength (MPa) | Yield Strength (0.2% Offset) (MPa) | Elongation (%) |
| SMO 254 | 8.0 | 1320 – 1390 | 650 | 300 | 35 |
254 SMO material equivalent outlines global standards, grade names, and UNS designations. It provides material clarity.
| Grade | WERKSTOFF NR. | UNS | AFNOR | EN | SIS | BS | GOST |
| SMO 254 | 1.4547 | S31254 | Z1 CNDU 20.18.06Az | X1CrNiMoCuN20-18-7 | 2378 | – | – |
SMO 254 Pipe Finish
Surface finish plays a key role in the performance and appearance of SMO 254 Pipes. It affects corrosion resistance, cleanliness, and suitability for different industrial settings.
Common finishes include cold drawn, solution annealed, annealed and pickled, and matt finish for reliable strength and smoothness. Polished options like 180, 320, and 400 grit, 600 grit, and mirror finishes deliver a refined look for hygienic or decorative use. Bright annealed, BA polishing, and 2B finishes enhance surface durability. No.4 polishing provides a uniform satin effect. These finishes help match pipes to specific operational needs.
Stainless Steel Pipe Grades We Offer
SMO 254 Size Chart
| Nominal Pipe Size in Inch | Thickness in MM | Diameterin MM | Volume (ft3/ft) | Length of Pipe (ft per sq. foot of Surface) | Transverse Areas (in2) MM2 | Weight | Number of Threads per inch of Screw | |||||
| Internal | External | Internal Surface (ft) | External Surface (ft) | Steel | Internal | External | (kg/m) | (lb/ft) | ||||
| 1/8″ | 0.07 | 0.27 | 0.405 | 04 | 14.20 | 9.43 | 0.07 | 0.06 | 0.13 | 0.36 | 0.24 | 27 |
| 3/8″ | 0.09 | 0.49 | 0.675 | 0.0013 | 7.75 | 5.66 | 0.17 | 0.19 | 0.36 | 0.84 | 0.57 | 18 |
| ¾” | 0.11 | 0.82 | 1.050 | 0.0037 | 4.64 | 3.64 | 0.33 | 0.53 | 0.87 | 1.68 | 1.13 | 14 |
| 1 ¼” | 0.14 | 1.38 | 1.660 | 0.0104 | 2.77 | 2.30 | 0.67 | 1.50 | 2.16 | 3.38 | 2.27 | 11 ½ |
| 2″ | 0.15 | 2.07 | 2.375 | 0.0233 | 1.85 | 1.61 | 1.08 | 3.36 | 4.43 | 5.43 | 3.65 | 11 ½ |
| 3″ | 0.22 | 3.07 | 3.500 | 0.0513 | 1.25 | 1.09 | 2.23 | 7.39 | 9.62 | 11.27 | 7.58 | 8 |
| 4″ | 0.24 | 4.03 | 4.500 | 0.0884 | 0.95 | 0.85 | 3.17 | 12.73 | 15.90 | 16.06 | 10.79 | 8 |
| 6″ | 0.28 | 6.07 | 6.625 | 0.2006 | 0.63 | 0.58 | 5.58 | 28.89 | 34.47 | 28.23 | 18.97 | 8 |
| 10″ | 0.37 | 10.02 | 10.750 | 0.5476 | 0.38 | 0.36 | 11.90 | 78.85 | 90.76 | 60.24 | 40.48 | 8 |
| 14″ | 0.44 | 13.13 | 14 | 0.9354 | 0.28 | 0.27 | 18.64 | 135.30 | 153.94 | 93.75 | 63.00 | 8 |
| 18″ | 0.56 | 16.88 | 18 | 1.5550 | 0.23 | 0.21 | 30.85 | 224.00 | 254.85 | 156.26 | 105.00 | 8 |
| ¼” | 0.09 | 0.36 | 0.540 | 07 | 10.49 | 7.07 | 0.13 | 0.10 | 0.23 | 0.63 | 0.42 | 18 |
| ½” | 0.11 | 0.62 | 0.840 | 0.0021 | 6.14 | 4.55 | 0.25 | 0.30 | 0.55 | 1.26 | 0.85 | 14 |
| 1″ | 0.13 | 1.05 | 1.315 | 0.0060 | 3.64 | 2.90 | 0.49 | 0.86 | 1.36 | 2.50 | 1.68 | 11 ½ |
| 20″ | 0.59 | 18.81 | 20 | 1.9260 | 0.20 | 0.19 | 36.15 | 278.00 | 314.15 | 183.05 | 123.00 | 8 |
| 16″ | 0.50 | 15.00 | 16 | 1.2230 | 0.25 | 0.24 | 24.35 | 176.70 | 201.05 | 116.08 | 78.00 | 8 |
| 12″ | 0.41 | 11.94 | 12.750 | 0.7763 | 0.32 | 0.30 | 15.74 | 111.90 | 127.64 | 79.77 | 53.60 | 8 |
| 8″ | 0.32 | 7.98 | 8.625 | 0.3552 | 0.48 | 0.44 | 8.40 | 50.02 | 58.42 | 42.49 | 28.55 | 8 |
| 5″ | 0.26 | 5.05 | 5.563 | 0.1389 | 0.76 | 0.69 | 4.30 | 20.00 | 24.30 | 21.74 | 14.61 | 8 |
| 1 ½” | 0.15 | 1.61 | 1.900 | 0.0141 | 2.37 | 2.01 | 0.80 | 2.04 | 2.84 | 4.04 | 2.72 | 11 ½ |
| 3 ½” | 0.23 | 3.55 | 4 | 0.0687 | 1.08 | 0.95 | 2.68 | 9.89 | 12.56 | 13.56 | 9.11 | 8 |
| 2 ½” | 0.20 | 2.47 | 2.875 | 0.0333 | 1.55 | 1.33 | 1.70 | 4.79 | 6.49 | 8.62 | 5.79 | 8 |
| 24″ | 0.69 | 22.63 | 24 | 2.7930 | 0.17 | 0.16 | 50.30 | 402.10 | 452.40 | 254.48 | 171.00 | 8 |
Smo 254 Pipe Weight Chart
| Nominal Size | Weight | Schedule | Weight | OutSide Diamter (O.D) | Weight | ||
| Inch | MM | kg/Mtr | MM | Inch | Lb/ft | ||
| 1 1/2″ | 0.0145 | 3.0683 | 40 | 4.0048 | 48 | 1.0900 | 2.0718 |
| 42″ | 0.0312 | 7.0925 | – | 206.0914 | 1067 | 42 | 138.0911 |
| 12″ | 0.0188 | 4.0775 | – | 37.0570 | 324 | 12.0750 | 25.0222 |
| 48″ | 0.0375 | 9.0525 | – | 284.0112 | 1219 | 48 | 190.0738 |
| 1/2″ | 0.0109 | 2.0769 | 40 | 1.0268 | 21 | 0.0840 | 0.0851 |
| 1 1/4″ | 0.0140 | 3.0556 | 40 | 3.0385 | 42 | 1.0660 | 2.0273 |
| 3″ | 0.0216 | 5.0486 | 40 | 11.0284 | 89 | 3.0500 | 7.0576 |
| 36″ | 0.0250 | 6.0350 | – | 142.0180 | 914 | 36 | 95.0453 |
| 4″ | 0.0237 | 6.0020 | – | 16.0073 | 114 | 4.0500 | 10.0790 |
| 2″ | 0.0154 | 3.0912 | 40 | 5.0441 | 60 | 2.0375 | 3.0653 |
| 14″ | 0.0188 | 4.0775 | – | 41.0308 | 356 | 14 | 27.0732 |
| 18″ | 0.0219 | 5.0563 | – | 61.0948 | 457 | 18 | 41.0588 |
| 2 1/2″ | 0.0203 | 5.0516 | 40 | 8.0629 | 73 | 2.0875 | 5.0793 |
| 20″ | 0.0250 | 6.0350 | – | 78.0547 | 508 | 20 | 52.0733 |
| 6″ | 0.0188 | 4.0775 | – | 19.0252 | 168 | 6.0625 | 12.0924 |
| 3/4″ | 0.0113 | 2.0870 | 40 | 1.0684 | 27 | 1.0050 | 1.0131 |
| 30″ | 0.0250 | 6.0350 | – | 118.0318 | 762 | 30 | 79.0433 |
| 8″ | 0.0188 | 4.0775 | – | 25.0233 | 219 | 8.0625 | 16.0940 |
| 1″ | 0.0133 | 3.0378 | 40 | 2.0501 | 33 | 1.0315 | 1.0679 |
SMO 254 Pipes prices vary based on size, wall thickness, type, and finish. The table gives clear pricing details to help compare options and choose the pipe that meet your needs.
| Description | Price |
| 254 SMO pipe Price in India | – |
| Uns S31254 Duplex Stainless Steel Pipes (254 SMO, 1.4547, 254SMO) | US $ 540 – 650 / Ton |
| 254 Smo Uns S31254 1.4547 Stainless Steel Pipe | US $ 780 – 1200 / Ton |
| Large Diameter 254 Smo Stainless Steel Pipe | US $ 2400 – 2600 / Ton |
| 254 Smo Uns S31254 Stainless Steel Pipe | US $ 1950 – 2740 / Ton |
| 254 Smo, Uns S31254, 6moly Stainless Steel Pipes | US $ 2800 / Ton |
| Uns S31254 Seamless Stainless Steel Pipes (254 SMO, 1.4547, 254SMO) | US $ 4.85 – 11.85 / kg |
| 2 Inch Nb 254 Smo Seamless Pipe / Ss31254 Seamless Pipe | Min. Order: 1 Piece |
| 1.4571 Stainless Steel Seamless Tube 254 Smo Steel Seamless Pipe | US $ 690 – 1100 / Ton |
| Smo 254 Polish Stainless Steel Pipe for Gas/Oil Tube | US $ 540 – 650 / Ton |
| 254 Smo Tubing 254smo Pipe S31254 Tubing Smo254 Seamless Tubing Pipe | US $ 5.85 – 11.85 / kg |
Uses of SMO 254 Pipes
SMO 254 Pipes are used for handling demanding processes and corrosive environments. They are used in seawater cooling, cooling water pipes, ballast water systems and firefighting networks on ships and offshore facilities. Hydraulic and instrumentation tubing in critical control systems use 254 SMO for accurate fluid delivery. Pulp bleaching plants use these pipes to transport bleaching agents during production. Gas cleaning systems use them in ducts and scrubbers to handle process gases. Tanks and pipelines that store or transfer chemicals with high halide content also use these pipes to ensure safe and efficient operation.
How SMO 254 Pipes Are Manufactured
Round Bar
Analytic
Cut to Length
Centering
Heating
Perforation
Inspection of Size
Pickling
Inspection of Surface
Lubricating
Cold Drawing (Cold Rolling)
Degreasing
Annealing
Straightening
Cut
Pickling / Passivating
Inspection
Analytic
Marking
Packing & Shipping
Applications and Uses of SMO 254 Pipe
Customization Options & Stock Availability
Midland Alloys Inc. offers SMO 254 Pipes with full customization to match project needs. Clients can choose diameters, wall thicknesses, and lengths, including cut-to-length options and custom OD/ID ranges. Special finishes like polished, annealed, and pickled are available, along with tailored end types such as plain, beveled, or threaded ends. Surface finishes and tolerances are supplied according to exact specifications. MOQ flexibility covers both small and large orders. Ready stock has standard sizes from 5 mm to 500 mm in seamless and welded forms. In-stock items ship the same day, with custom batches delivered within agreed lead times.
Midland Alloys Inc., based in India, is a trusted 254 smo pipe suppliers to markets worldwide. We supply to gulf countries like UAE, Saudi Arabia, Oman, Qatar, and Kuwait, supported by demand in oil and gas and construction.Our network is expanding throughout Europe, including Germany, the United Kingdom, France, and Italy, as well as in Asia-Pacific countries such as Singapore, Malaysia, Indonesia, and South Korea. We also serve emerging markets in Africa and Latin America, such as South Africa, Egypt, Nigeria, and Brazil. Every order receives export-grade packaging, accurate customs paperwork, and timely port handling, strengthening ties with contractors, OEMs, and distributors.
We supply SMO 254 pipes that comply with ASTM A312, A269, A213, A249, and A358 standards. Our ISO 9001:2015 certified system ensures that each pipe comes with Mill Test Certificates in accordance with EN 10204 3.1 or 3.2. Third-party inspections from TUV, BV, DNV, SGS, or Lloyd’s are available upon request. All products comply with industry standards such as PED 2014/68/EU, NACE MR0175, and AD 2000 W0 when applicable. Raw materials, test results, and documents are all fully traceable throughout production.
254 SMO Seamless Pipes are packed in export-grade materials to prevent damage during transit. Options include HDPE wrapping, wooden boxes, shrink wrap, or bundles with end caps. We also provide custom packing options to meet client or country specifications. Each pipe has clear tags with the heat number, grade, size and standards. We handle domestic deliveries by road or rail, as well as international sea or air freight. We carefully manage bulk orders, urgent dispatches, and project-based schedules. Stock ships the same day while custom orders have agreed-upon lead times.
Why Choose Midland Alloys Inc. for SMO 254 Pipes
We are a reliable partner for SMO 254 pipes, supplying quality products to a variety of industries. Our ISO 9001:2015-certified system ensures that each pipe meets international standards. Each pipe goes through chemical, mechanical, and hydrostatic tests. We offer custom sizes, finishes, and end types to meet project specifications. Our team manages domestic and international shipments with proper documentation and timely delivery.
Frequently Asked Questions About SMO 254 Pipes
254 SMO contains about 20% chromium, 18% nickel, 6% molybdenum, and 0.2% nitrogen, with iron as the balance.
254 SMO has higher chromium, nickel, molybdenum, and nitrogen, giving it far better pitting and crevice corrosion resistance than 316.
A SMO pipe is made from 254 SMO, a high-alloy austenitic stainless steel with excellent corrosion resistance.
254 SMO material is equivalent to UNS S31254, WNR 1.4547, and X1CrNiMoN20‑18‑7.
SMO 254 pipe prices vary by size, type, finish, and order quantity.
SMO 254 pipes are available in seamless and welded forms from 5 mm to 500 mm OD.
