254 SMO Pipe

Certified 254 SMO Stainless Steel Pipe Supplier, ASTM A312 SMO 254 pipe in India


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.


SMO 254 Pipes

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.

254 SMO Pipe Specification

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
  • Large Diameter 254 SMO Pipe
  • Nickel NW 2200 Capillary Tube & Other Odd Size
  • UNS S31254 Heat Exchanger & Condenser Tube
Manufacturing Technique Hot drawn, Cold drawn, solid solution, bright annealed, hot extruding

Mumbai-based Supplier of WNR 1.4547 Seamless Pipes, Cut to Size, at Factory Rates

SMO 254 Seamless Pipe Price List

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

Ready Stock Available of Alloy 254 Pipes with OD 6.0–630mm or Customized Sizes

254 SMO Pipe 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

Weight Chart for 254 SMO Stainless Steel Round Pipes

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 Stainless Steel Pipe Suppliers, Check Pressure Rating, SS 254 Round, Square and Rectangular Pipe Stock For Sale

UNS S31254 Pipe Pressure Ratings

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

Types of SMO 254 Pipes

SMO 254 Seamless Pipe

SMO 254 Seamless Pipe

254 SMO Welded Pipe

254 SMO Welded Pipe

WNR 1.4547 ERW Pipe

WNR 1.4547 ERW Pipe

Alloy 254 Round Pipe

Alloy 254 Round Pipe

254 SMO stainless steel Square Pipe

254 SMO stainless steel Square Pipe

SMO Steel Rectangular Pipe

SMO Steel Rectangular Pipe


Request a Quote from Preston Pipes and Alloys for SMO 254 Pipes at Competitive Rates

Mechanical Properties of SMO 254 Stainless Steel Rectangular Pipes

Alloy Tensile Strength Elongation Reduction of Area Hardness (Brinell)
SMO 254 650 MPa – 850 MPa 35% 50% 270 HB

Physical Properties of SMO 254 Seamless Pipes

Grade Density Yield Strength (0.2%Offset) Tensile Strength Melting Point Elongation
SMO 254 8 g/cm3 300 650 1320°C – 1390°C 35 %

Equivalent Standards of Alloy 254 Round Pipes

Grade Flanges American standard WNR/ DIN/EN
254 SMO Pipe 254 SMO flanges ASTM A312 UNS S31254 1.4547

Heat Treatment Details for SMO 254 SquarePipes

Heat treatment Temperature range
Snnealing Solution
  • 1150°C – 1200°C
  • 2100°F – 2190°F

Applications of SMO 254 Pipes in Various Industries