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SMO 254 Pipes are high-performance austenitic pipes made for use in high-temperature environments. These pipes have excellent resistance to corrosion and strong mechanical properties at elevated temperatures. Preston Pipes & Alloys is a leading supplier of SMO 254 Pipes, trusted for consistent quality and reliable service. These pipes have excellent weldability, easy formability and outstanding durability. Heat exchangers, chemical process equipment, food processing units, flue gas desulfurization scrubbers, and petroleum production systems are some of its frequent applications. Flue-gas cleaning systems, bleaching systems in pulp and paper factories, desalination, and saltwater handling are some of the other significant uses of 254 SMO pipes. As one of the trusted 254 SMO pipe suppliers, the company also provides SMO 254 Pipe solutions for extreme industrial environments.
SMO 254 stainless steel, also known as UNS S31254 Pipe, combines strong corrosion resistance with good mechanical strength. The material includes elements like carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, molybdenum, nitrogen, and copper. This makes the smo pipe material suitable for seawater handling and harsh chemical applications. The 254 SMO stainless steel pipe offers a tensile strength of 650 and a yield strength of 300. It has a melting point between 1320 and 1390°C and an elongation of 35%. With a density of 8.0 g/cm³, it handles pressure, and stress in demanding settings. Equivalent grades include WERKSTOFF NR. 1.4547 and EN X1CrNiMoCuN20-18-7.
254 SMO pipes are available in various types like ERW, Seamless, EFW, Fabricated, Welded, DOM/CDW, and CEW. The outer diameters can differ between 4 to 219 mm, while the wall thicknesses range from 0.05 to 20 mm. On request, custom sizes are available. International standards like ASTM A312/ASME SA312 and ASTM A213/ASME SA213 are followed by pipes. Ends like Plain End, Beveled End, Threaded Pipe and Screwed Ends are available. Length options include Standard, Cut Length, Single Random, and Double Random Pipes, depending on the project requirement.
Strict quality checks are performed on each pipe, including third-party inspections, hydro testing, PMI testing, and ultrasonic testing. Using steel strips for extra protection, wooden crates or bubble wrap, packaging complies with international requirements to avoid damage during transit. For an emergency, we maintain complete stock of SMO 254 pipes. Get top-grade 254 SMO stainless steel pipe with reliable quality, and on-time delivery.
| ASTM Specification | ASTM A312/ASME SA312, ASTM A213/ ASME SA213 |
| Standard | EN, DIN, AISI, AMS, SAE, DTD, DS, NF, JIS, ASME, ASTM, GB, TOCT |
| Seamless Tube Size | 3.35 milimeter To 101.6 milimeter OD |
| Size of Seamless Pipe | Wall thickness: 0.05-20 milimeter, 4-219 milimeter |
| Size of Welded Pipe | 5.0 to 1219.02 milimeter |
| Size of EFW Pipe | 5.0 to 1219.02 milimeter |
| Welded Tube Size | 6.35 milimeter To 152 milimeter OD |
| Bwg & Swg | 18 Swg., 14-20 Swg., Swg., 12-16 Swg., 10 Swg. |
| Value Added Service | Expansion and Draw as per needed Length and Size, Polish, Machining, Annealed & Pickled Bending Etc. |
| Pipe Schedule | STD, SCH120, SCH20, SCH10S, SCH30, SCH40, SCH140, SCH40S, SCH160, XS, SCH60, SCH5, SCH10, SCH80, XXS, SCH80 |
| Tubing wall thickness | 0.020" –0.220", (custom wall thicknesses available) |
| Finish | AP (Annealed & Pickled), BA (Bright & Annealed), NO.1, 2B, Polished, MF, HL, NO.4, Mirror finish, 8K etc |
| End | Plain End, Beveled End, Treaded Pipe, Screwed ends |
| Length | Standard & Cut length, Single Random, Double Random Pipe |
| Form | Hydraulic, Rectangular, Coiled, Square, Hollow, Round, Straight Pipes/tubes, “U” Shape, Pan Cake Coils, Boiler, LSAW etc. |
| Application | Dairy Pipe, Oil Pipe/tube, Gas Pipe/tube, Fluid Pipe/tube, Boiler Tube, Heat exchanger Tube |
| Type | ERW/ Seamless / EFW / Fabricated / Welded / DOM/CDW /CEW 254 SMO Pipe |
| Marking | Heat No. (Or as per need.), Thickness, OD, Grade, Standard Length |
| Specialize in |
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| Manufacturing Technique | Hot drawn, Cold drawn, solid solution, bright annealed, hot extruding |
| Nominal Sizes in Inch | Price in USD |
| 1/8" | US $ 70 |
| 3/8" | US $ 140 |
| 3/4" | US $ 230 |
| 2" | US $ 480 |
| 1/4" | US $ 110 |
| 1" | US $ 310 |
| 1/2" | US $ 170 |
| 3" | US $ 650 |
| 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 |
| 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 |
| 254 SMO Pipe O.D. (in.) | 0.028 | 0.035 | 0.083 | 0.049 | 0.065 | 0.095 | 0.109 | 0.120 |
| Working Pressure (psig) | ||||||||
| 1/8 | 7900 | 10100 | ||||||
| 1/4 | 3700 | 4800 | 7000 | 9500 | ||||
| 5/16 | 3700 | 5400 | 7300 | |||||
| 3/8 | 3100 | 4400 | 6100 | |||||
| 1/2 | 2300 | 3200 | 4400 | |||||
| 3/4 | 4000 | 2200 | 3000 | 4600 | ||||
| 1 | 2900 | 2200 | 3400 | 3900 | 4300 | |||
SMO 254 Seamless Pipe
254 SMO Welded Pipe
WNR 1.4547 ERW Pipe
Alloy 254 Round Pipe
254 SMO stainless steel Square Pipe
SMO Steel Rectangular Pipe
Request a Quote from Preston Pipes and Alloys for SMO 254 Pipes at Competitive Rates
| Alloy | Tensile Strength | Elongation | Reduction of Area | Hardness (Brinell) |
| SMO 254 | 650 MPa – 850 MPa | 35% | 50% | 270 HB |
| Grade | Density | Yield Strength (0.2%Offset) | Tensile Strength | Melting Point | Elongation |
| SMO 254 | 8 g/cm3 | 300 | 650 | 1320°C – 1390°C | 35 % |
| Grade | Flanges | American standard | WNR/ DIN/EN |
| 254 SMO Pipe | 254 SMO flanges | ASTM A312 UNS S31254 | 1.4547 |
| Heat treatment | Temperature range |
| Snnealing Solution |
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