Super Duplex Steel Pipes & Tubes Supplier
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Super Duplex Pipe, Super Duplex Tubing, Super Duplex Steel Pipes Supplier, ASME SA790 Super Duplex Pipe Suppliers, Super Duplex Seamless Pipe, Super Duplex Welded Pipes, Super Duplex Alloy Round Pipe, Super Duplex Pipes and Tubes Manufacturers in India.
Kalpataru Piping is a reliable manufacturer , supplier & exporter of Super Duplex Steel Pipes
in India, providing huge range of super duplex products. We have seamless, welded, ERW pipes & tubes, super duplex pipe spools that are used in rigorous industrial purposes.
Kalpataru Piping provides high-quality super duplex steel pipes and tubes manufactured using SDSS 2507 and other high-quality super duplex grades with high chromium accompanied by molybdenum content that offer high corrosion resistance as compared to the standard duplex steels. Our super duplex products are affordable with lower alloys to be incorporated than austenitic or ferritic stainless steels without affecting the performance. They also come in tailor-made sizes, wall thickness, schedules and internationally standardized like ASME B36.19, ASTM A790 and ASTM A789 so that projects can be specific to the needs and specifications of the project and therefore reliable and accurate. Every super duplex pipes and tubes are highly tested including micro and macro examination, flaring, pitting resistance and intergranular corrosion (IGC) tests to make sure they are reliable, perform well, and meet international standards.
What is a Super Duplex Pipe?
Super Duplex pipes and tubes manufactured as per ASTM A790 and ASTM A789 are high-performance stainless steel products with a balanced austenitic–ferritic microstructure. Grades such as UNS S32750 and UNS S32760 contain high levels of chromium, nickel, and molybdenum, providing exceptional strength, durability, and corrosion resistance. Super Duplex Stainless Steel pipes offer excellent resistance to pitting, crevice corrosion, and chloride stress corrosion cracking, making them ideal for offshore oil & gas, chemical processing, desalination plants, marine systems, and high-pressure industrial applications. These pipes and tubes can operate at temperatures up to 600°F, have a density of approximately 7.8 g/cm³, and a melting point of around 1350°C, ensuring long service life. Additionally, ASTM A790 / ASTM A789 Super Duplex pipes in UNS S32750 and S32760 grades are highly weldable and machinable, allowing easy fabrication without the need for special equipment.
Difference Between Duplex & Super Duplex Stainless Steel
| Property | Super Duplex Stainless Steel | Duplex Stainless Steel |
| Chemical Composition | ~25% Chromium, ~7% Nickel, ~4% Molybdenum | ~22% Chromium, ~5–6% Nickel, ~3% Molybdenum |
| Corrosion Resistance | Excellent resistance to pitting, crevice corrosion, and chloride stress corrosion cracking | Good corrosion resistance, but lower than super duplex |
| Mechanical Strength | Very high yield and tensile strength | High strength, but comparatively lower |
| Cost | Higher cost due to increased nickel and alloying elements | More economical than super duplex |
| Typical Applications | Offshore, desalination, chemical processing, oil & gas | Structural, chemical, and moderate corrosion environments |
For a detailed technical comparison, grades, applications, and selection guidance, refer to our complete guide on the difference between Duplex and Super Duplex stainless steel.
Super Duplex Pipe Material Grades & Standards (ASTM / ASME A 789 SA 789, ASTM / ASME A 790, SA 790)
Super duplex stainless steel pipes are produced according to internationally accepted standards like ASTM/ASTM A789 and A790. UNS S32750 (ASTM A240 / A790) is characterized by a high level of strength and an outstanding pitting and crevice resistance to corrosion. UNS S32760 (ASTM A789 / A790) is more resistant to seawater and hostile chloride.
Types of Super Duplex Steel Pipes and Super Duplex Steel Tubes
ASTM A789 / ASTM A790 Super Duplex Pipe Specifications
| Specifications | ASTM A 789 ASME SA 789 |
| Standard | AISI, DIN, EN, GB, JIS, ASTM, ASME Super Duplex 2507 Pipe |
| 2507 Seamless Pipe Outer Diameter | 6.00 mm OD up to 250 mm OD, Sizes up to 12” NB |
| Alloy 2507 Welded Pipe size | 5.0 mm – 1219.2 mm |
| 2507 EFW Pipe size | 5.0 mm – 1219.2 mm |
| Thickness | 0.3mm – 50 mm |
| SS 2507 Seamless Tube Size | 3.35 mm OD To 101.6 mm OD, 15 NB to 150 NB IN |
| 2507 Welded Tube Size | 6.35 mm OD To 152 mm OD |
| Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| DSS 2507 tubing wall thickness | 0.020″ –0.220″ (special wall thicknesses available) |
| 2507 Pipe Schedule | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
| Duplex 2507 Pipe & Tube Finish | Polished, AP (Annealed & Pickled), MF, NO.1, NO.4, BA (Bright & Annealed), 2B, BA, HL, 8K, Mirror finish,etc |
| 2507 Pipe & Tube Form | Round, Hollow, Square,Rectangular, Hydraulic, Coiled, Straight Pipes, “U” Shape, Pan Cake Coils etc. |
| Super Duplex 2507 Pipe & Tube Length | Single Random, Double Random, Standard & Cut length |
| 2507 Pipe & Tube End | Beveled End,Plain End, Treaded. |
| 2507 Pipe & Tube Type | 2507 Seamless / ERW/ Welded / Fabricated / EFW / CDW / DOM / CEW Pipes |
| Marking | All 2507 Pipes are marked as follows: Grade, Standard, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
| Super Duplex 2507 Tube Application | Oil Tube, Gas Tube, Fluid Tube, Boiler and Heatexchanger |
| Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Specialized in | Large Dia 2507 Pipe2507 Capillary Tube & Other Odd Size 2507 Super Duplex Heat Exchanger & Condenser Tubes |
| Material Test Certificates (MTC) | Material Test Certificates (MTC) as per EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2, 100% Radiography Test Report, Raw Materials Certificate, Third Party Inspection Report, Fumigation Certificates, Heat Treatment Charts, 2507 Tubes HS Code Commercial Invoice, Form A for Generalized System of Preferences (GSP), Manufacturer Test Certificate , Laboratory Test Certificate from Govt. Approved Lab. |
| We can also cut, thread, and groove Super Duplex 2507 Pipes & Tubes to meet your specifications. | |
ASTM A790 / ASTM A789 Super Duplex Pipe Manufacturing Process
Let’s understand the process of manufacturing super duplex stainless steel pipes:
- Steel Making: Super duplex steel is made through the use of Electrical Arc Furnace (EAF), and then Vacuum Oxygen Decarburization (VOD). With the help of the chemical composition & to maintain the necessary balance of chromium, nickel, molybdenum, and nitrogen to achieve a superior performance.
- Pipe Manufacturing: The pipes are produced through seamless manufacture of cold-finished as well as non-seamless pipes production processes, which allows them to have perfect dimensional precision, uniformity in the wall thickness, and greater mechanical capabilities. This technique makes sure that the pipe construction is not weld-seamed and thus it can be used in high pressure and harsh conditions.
- Heat Treatment: Super duplex pipes cannot be hardened through the traditional heat treatment. They are normally provided in the solution-annealed form in order to re-establish the proper microstructure, enhance corrosion resistance and alleviate internal stresses that are formed during the manufacturing process.
- Super duplex steel pipes have price depending on various factors such as grade (S32750 or S32760), type of pipes (seamless or welded), size, schedule, wall thickness, number, and testing. The alloy content of super duplex pipes and their high mechanical and corrosion-resistant qualities makes them fairly expensive as compared to the ordinary duplex stainless steel pipes.
Types of Super Duplex Stainless Steel Pipes & Tubes
CONTACT US FOR QUATATION & QUESTIONS RELATED TO SUPER DUPLEX PIPES & TUBES
Super Duplex Pipes & Tubes Chemical Composition
| Super Duplex | C | N | P | Si | Mn | Mo | Ni | Cr | S | Other |
| 0.030 | 0.24/0.32 | 0.035 | 0.80 | 1.20 | 3.0/5.0 | 6.00/8.00 | 24.0/26.0 | 0.020 | Cu:0.50 |
Super Duplex Stainless Steel Tube Mechanical Properties
| Super Duplex | Density | Melting Point | Yield Strength (0.2%Offset) | Tensile Strength | Elongation |
| 7.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80000 , MPa – 550 | Psi – 116000 , MPa – 800 | 15 % |
Physical Properties of Super Duplex Stainless ERW Pipe
| Property | Unit | 600°F | 400°F | 200°F | 70°F |
| Elastic Modulus | 103 ksi | 26.2 | 27.0 | 28.2 | 29.0 |
| Thermal Expansion | X10-6/°F | 8.0 | 7.5 | 7.5 | – |
| Density | lbs/in3 | – | – | – | 0.28 |
| Poisson Ratio | – | – | – | – | 0.3 |
| Specific Heat | Btu/lb·°F | .13 | .12 | .12 | 0.12 |
| Thermal Conductivity | Btu-in/h·ft2·°F | 132 | 120 | 108 | 96 |
ASTM A789 / ASTM A790 Super Duplex Pipe Size Ranges
Size Chart of SDSS Welded Pipe
| OD (mm) | WT (mm) | in. | Kg/m |
| 21.34 | 2.11 | 1/2 | 1.02 |
| 17.15 | 1.65 | 3/8 | 0.64 |
| 26.67 | 2.11 | 3/4 | 1.30 |
| 42.16 | 2.77 | 1¼ | 2.73 |
| 33.40 | 2.77 | 1 | 2.13 |
| 13.72 | 1.65 | 1/4 | 0.50 |
| 48.26 | 2.77 | 1½ | 3.16 |
| 73.03 | 3.05 | 2½ | 5.35 |
| 60.33 | 2.77 | 2 | 3.99 |
| 88.90 | 3.05 | 3 | 6.56 |
| 114.30 | 3.05 | 4 | 8.50 |
| 101.60 | 3.05 | 3½ | 7.53 |
| 141.30 | 6.55 | 5 | 22.10 |
| 219.08 | 8.18 | 8 | 43.20 |
| 168.28 | 3.4 | 6 | 14.04 |
Super Duplex Pipe Pressure Rating
| Size | 750° | 700° | 650° | 600° | 500° | 400° | 300° | 200° | 100°F |
| 10″ | 578 | 584 | 596 | 615 | 945 | 694 | 755 | 840 | 974 |
| 8″ | 637 | 644 | 657 | 678 | 711 | 765 | 832 | 926 | 1073 |
| 6″ | 724 | 732 | 747 | 770 | 808 | 869 | 945 | 1052 | 1219 |
| 5″ | 797 | 805 | 822 | 847 | 889 | 956 | 1040 | 1158 | 1342 |
| 4″ | 909 | 919 | 938 | 967 | 1014 | 1091 | 1187 | 1321 | 1531 |
| 3″ | 1072 | 1084 | 1106 | 1140 | 1196 | 1287 | 1400 | 1558 | 1806 |
| 2″ | 1129 | 1141 | 1165 | 1201 | 1260 | 1355 | 1474 | 1640 | 1902 |
| 1.5″ | 1340 | 1354 | 1383 | 1425 | 1496 | 1608 | 1750 | 1947 | 2257 |
| 1″ | 1810 | 1824 | 1867 | 1924 | 2019 | 2171 | 2362 | 2629 | 3048 |
Super Duplex Steel Tube Size Chart
| Wall | Sizes ( O.D.) |
| .010 | 1/16″ , 1/8″ , 3/16″ |
| .020 | 1/16″ , 1/8″ , 3/16″ , 1/4″ , 5/16″ , 3/8″ |
| .012 | 1/8″ |
| .016 | 1/8″ , 3/16″ |
| .028 | 1/8″ , 3/16″ , 1/4″ , 5/16″ , 3/8″ , 1/2″ , 3/4″ , 1″ , 1 1/2″ , 2″ |
| .035 | 1/8″ , 3/16″ , 1/4″ , 5/16″ , 3/8″ , 7/16″ , 1/2″ , 16″ , 5/8″ , 3/4″ , 7/8″ , 1″ , 1 1/4″ , 1 1/2″ , 1 5/8″ , 2″ , 2 1/4″ |
| .049 | 3/16″ , 1/4″ , 5/16″ , 3/8″ , 1/2″ , 16″ , 5/8″ , 3/4″ , 7/8″ , 1″ , 1 1/8″ , 1 1/4″ , 1 1/2″ , 1 5/8″ , 2″ , 2 1/4″ |
| .065 | 1/4″ , 5/16″ , 3/8″ , 1/2″ , 16″ , 5/8″ , 3/4″ , 7/8″ , 1″ , 1 1/4″ , 1 1/2″ , 1 5/8″ , 1 3/4″ , 2″ , 2 1/2″ , 3″ |
| .083 | 1/4″ , 3/8″ , 1/2″ , 5/8″ , 3/4″ , 7/8″ , 1″ , 1 1/4″ , 1 1/2″ , 1 5/8″ , 1 7/8″ , 2″ , 2 1/2″ ,3″ |
| .095 | 1/2″ , 5/8″ , 1″ , 1 1/4″ , 1 1/2″ , 2″ |
| .109 | 1/2″ , 3/4″ , 1″ , 1 1/4″ , 1 1/2″ , 2″ |
| .120 | 1/2″ , 5/8″ , 3/4″ , 7/8″ , 1″ , 1 1/4″ , 1 1/2″ , 2″ , 2 1/4″ , 2 1/2″ , 3″ |
| .125 | 3/4″ , 1″ , 1 1/4″ , 1 1/2″ , 2″ , 3″ , 3 1/4″ |
| .134 | 1″ |
| .250 | 3″ |
| .375 | 3 1/2″ |
Super Duplex Pipe Schedule Chart
| Size (mm) | Size (inch) | OD (mm) | XXS | 160 | 140 | 120 | 100 | 80 | 80S | XS | 60 | 40 | 40S | STD | 30 | 20 | 10S | 5S |
| 200 | 8 | 219.1 | 22.23 | 23.01 | 20.62 | 18.26 | 15.09 | 12.7 | 12.7 | 12.7 | 10.31 | 8.18 | 8.18 | 8.18 | 7.04 | 6.35 | 3.76 | 2.77 |
| 107.92 | 111.27 | 100.92 | 90.44 | 75.92 | 64.64 | 65.95 | 64.64 | 53.08 | 42.55 | 43.39 | 42.55 | 36.81 | 33.31 | 20.37 | 15.09 | |||
| 150 | 6 | 168.3 | 21.95 | 18.26 | – | 14.27 | – | 10.97 | 10.97 | 10.97 | – | 7.11 | 7.11 | 7.11 | – | – | 3.4 | 2.77 |
| 79.22 | 67.56 | – | 54.2 | – | 42.56 | 43.42 | 42.56 | – | 28.26 | 28.83 | 28.26 | – | – | 14.13 | 11.55 | |||
| 125 | 5 | 141.3 | 19.05 | 15.88 | – | 12.7 | – | 9.53 | 9.53 | 9.53 | – | 6.55 | 6.55 | 6.55 | – | – | 3.4 | 2.77 |
| 57.43 | 49.11 | – | 40.28 | – | 30.97 | 31.59 | 30.97 | – | 21.77 | 22.2 | 21.77 | – | – | 11.82 | 9.67 | |||
| 100 | 4 | 114.3 | 17.12 | 13.49 | – | 11.13 | – | 8.56 | 8.56 | 8.56 | – | 6.02 | 6.02 | 6.02 | – | – | 3.05 | 2.11 |
| 41.03 | 33.54 | – | 28.32 | – | 22.32 | 22.77 | 22.32 | – | 16.07 | 16.4 | 16.07 | – | – | 8.52 | 5.96 | |||
| 90 | 3 1/2 | 101.6 | – | – | – | – | – | 8.08 | 8.08 | 8.08 | – | 5.74 | 5.74 | 5.74 | – | – | 3.05 | 2.11 |
| – | – | – | – | – | 18.63 | 19.01 | 18.63 | – | 13.57 | 13.84 | 13.57 | – | – | 7.55 | 5.29 | |||
| 80 | 3 | 88.9 | 15.24 | 11.13 | – | – | – | 7.62 | 7.62 | 7.62 | – | 5.49 | 5.49 | 5.49 | – | – | 3.05 | 2.11 |
| 27.68 | 21.35 | – | – | – | 15.27 | 15.59 | 15.27 | – | 11.29 | 11.52 | 11.29 | – | – | 6.59 | 4.6 | |||
| 65 | 2 1/2 | 73 | 14.02 | 9.53 | – | – | – | 7.01 | 7.01 | 7.01 | – | 5.16 | 5.16 | 5.16 | – | – | 3.05 | 2.11 |
| 20.39 | 14.92 | – | – | – | 11.41 | 11.64 | 11.41 | – | 8.63 | 8.81 | 8.63 | – | – | 5.36 | 3.77 | |||
| 50 | 2 | 60.3 | 11.07 | 8.74 | – | – | – | 5.54 | 5.54 | 5.54 | – | 3.91 | 3.91 | 3.91 | – | – | 2.77 | 1.65 |
| 13.44 | 11.11 | – | – | – | 7.48 | 7.63 | 7.48 | – | 5.44 | 5.54 | 5.44 | – | – | 4.01 | 2.44 | |||
| 40 | 1 1/2 | 48.3 | 10.15 | 7.14 | – | – | – | 5.08 | 5.08 | 5.08 | – | 3.68 | 3.68 | 3.68 | – | – | 2.77 | 1.65 |
| 9.56 | 7.25 | – | – | – | 5.41 | 5.51 | 5.41 | – | 4.05 | 4.13 | 4.05 | – | – | 3.1 | 1.95 | |||
| 32 | 1 1/4 | 42.2 | 9.7 | 6.35 | – | – | – | 4.85 | 4.85 | 4.85 | – | 3.56 | 3.56 | 3.56 | – | – | 2.77 | 1.65 |
| 7.77 | 5.61 | – | – | – | 4.47 | 4.56 | 4.47 | – | 3.39 | 3.46 | 3.39 | – | – | 2.76 | 1.68 | |||
| 25 | 1 | 33.4 | 9.09 | 6.35 | – | – | – | 4.55 | 4.55 | 4.55 | – | 3.38 | 3.38 | 3.38 | – | – | 2.77 | 1.65 |
| 5.45 | 4.24 | – | – | – | 3.24 | 3.29 | 3.24 | – | 2.5 | 2.55 | 2.5 | – | – | 2.13 | 1.33 | |||
| 20 | 3/4 | 26.7 | 7.82 | 5.56 | – | – | – | 3.91 | 3.91 | 3.91 | – | 2.87 | 2.87 | 2.87 | – | – | 2.11 | 1.65 |
| 3.64 | 2.9 | – | – | – | 2.2 | 2.24 | 2.2 | – | 1.69 | 1.71 | 1.69 | – | – | 1.31 | 1.04 | |||
| 15 | 1/2 | 21.3 | 7.47 | 4.78 | – | – | – | 3.73 | 3.73 | 3.73 | – | 2.77 | 2.77 | 2.77 | – | – | 2.11 | 1.65 |
| 2.55 | 1.95 | – | – | – | 1.62 | 1.65 | 1.62 | – | 1.27 | 1.3 | 1.27 | – | – | 1.01 | 0.82 | |||
| 10 | 3/8 | 17.1 | – | – | – | – | – | 3.2 | 3.2 | 3.2 | – | 2.31 | 2.31 | 2.31 | – | – | 1.65 | – |
| – | – | – | – | – | 1.1 | 1.12 | 1.1 | – | 0.84 | 0.86 | 0.84 | – | – | 0.64 | – | |||
| 8 | 1/4 | 13.7 | – | – | – | – | – | 3.02 | 3t.02 | 3.02 | – | 2.24 | 2.24 | 2.24 | – | – | 1.65 | – |
| – | – | – | – | – | 0.8 | 0.82 | 0.8 | – | 0.63 | 0.64 | 0.63 | – | – | 0.51 | – | |||
| 6 | 1/8 | 10.3 | – | – | – | – | – | 2.41 | 2.41 | 2.41 | – | 1.73 | 1.73 | 1.73 | – | – | 1.24 | – |
| – | – | – | – | – | 0.47 | 0.48 | 0.47 | – | 0.37 | 0.36 | 0.37 | – | – | 0.28 | – |
Dimensions Information for Super Duplex Pipes & Tubes
Super Duplex Tube Dimensions in Inches
| Pipe OD mm |
Pipe WT mm |
in. | Sch | Kg/m |
|---|---|---|---|---|
| 13.72 | 1.65 | 1/4 | 10S | 0.50 |
| 13.72 | 2.24 | 1/4 | 40S | 0.64 |
| 13.72 | 3.02 | 1/4 | 80S | 0.81 |
| 17.15 | 1.65 | 3/8 | 10S | 0.64 |
| 17.15 | 2.31 | 3/8 | 40S | 0.86 |
| 17.15 | 3.20 | 3/8 | 80S | 1.12 |
| 21.34 | 2.11 | 1/2 | 10S | 1.02 |
| 21.34 | 2.77 | 1/2 | 40S | 1.29 |
| 21.34 | 3.73 | 1/2 | 80S | 1.65 |
| 26.67 | 2.11 | 3/4 | 10S | 1.30 |
| 26.67 | 2.87 | 3/4 | 40S | 1.71 |
| 26.67 | 3.91 | 3/4 | 80S | 2.23 |
| 33.40 | 2.77 | 1 | 10S | 2.13 |
| 33.40 | 3.38 | 1 | 40S | 2.54 |
| 33.40 | 4.55 | 1 | 80S | 3.29 |
| 33.40 | 6.352) | 1 | 160 | 4.30 |
| 42.16 | 2.77 | 1¼ | 10S | 2.73 |
| 42.16 | 3.56 | 1¼ | 40S | 3.44 |
| 42.16 | 4.85 | 1¼ | 80S | 4.53 |
| 42.16 | 6.352) | 1¼ | 160 | 5.69 |
| 48.26 | 2.77 | 1½ | 10S | 3.16 |
| 48.26 | 3.68 | 1½ | 40S | 4.11 |
| 48.26 | 5.08 | 1½ | 80S | 5.49 |
| 60.33 | 2.77 | 2 | 10S | 3.99 |
| 60.33 | 3.91 | 2 | 40S | 5.52 |
| 60.33 | 5.54 | 2 | 80S | 7.60 |
| 60.33 | 8.742) | 2 | 160 | 11.29 |
| 73.03 | 3.05 | 2½ | 10S | 5.35 |
| 73.03 | 5.16 | 2½ | 40S | 8.77 |
| 73.03 | 7.01 | 2½ | 80S | 11.59 |
| 88.90 | 3.05 | 3 | 10S | 6.56 |
| 88.90 | 5.49 | 3 | 40S | 11.47 |
| 88.90 | 7.62 | 3 | 80S | 15.51 |
| 88.90 | 11.132) | 3 | 160 | 21.67 |
| 101.60 | 3.05 | 3½ | 10S | 7.53 |
| 101.60 | 5.74 | 3½ | 40S | 13.78 |
| 101.60 | 8.08 | 3½ | 80S | 18.92 |
| 114.30 | 3.05 | 4 | 10S | 8.50 |
| 114.30 | 6.02 | 4 | 40S | 16.32 |
| 114.30 | 8.56 | 4 | 80S | 22.67 |
| 114.30 | 13.492) | 4 | 160 | 34.05 |
| 141.30 | 6.55 | 5 | 40S | 22.10 |
| 141.30 | 9.53 | 5 | 80S | 31.44 |
| 141.30 | 15.882) | 5 | 160 | 49.87 |
| 168.28 | 3.4 | 6 | 10S | 14.04 |
| 168.28 | 7.11 | 6 | 40S | 28.69 |
| 168.28 | 10.97 | 6 | 80S | 43.21 |
| 168.28 | 14.27 | 6 | 120 | 54.75 |
| 168.28 | 18.262) | 6 | 160 | 68.59 |
| 219.08 | 8.18 | 8 | 40S | 43.20 |
| 219.08 | 12.7 | 8 | 80S | 65.63 |
| 219.08 | 18.23 | 8 | 120 | 91.30 |
| 219.08 | 23.012) | 8 | 160 | 112.97 |
Super Duplex Pipe dimensions
Super Duplex 2507 Seamless Pipes are stocked according to ANSI/ASME B36.19.
OD = Pipe outside diameter, WT = Pipe wall thickness
Buy from trusted Super Duplex 2507 Pipe suppliers for prime quality & low price.
| Pipe OD
mm |
Pipe WT
mm |
in. | Sch | Kg/m |
| 13.72 | 1.65 | 1/4 | 10S | 0.50 |
| 13.72 | 2.24 | 1/4 | 40S | 0.64 |
| 13.72 | 3.02 | 1/4 | 80S | 0.81 |
| 17.15 | 1.65 | 3/8 | 10S | 0.64 |
| 17.15 | 2.31 | 3/8 | 40S | 0.86 |
| 17.15 | 3.20 | 3/8 | 80S | 1.12 |
| 21.34 | 2.11 | 1/2 | 10S | 1.02 |
| 21.34 | 2.77 | 1/2 | 40S | 1.29 |
| 21.34 | 3.73 | 1/2 | 80S | 1.65 |
| 26.67 | 2.11 | 3/4 | 10S | 1.30 |
| 26.67 | 2.87 | 3/4 | 40S | 1.71 |
| 26.67 | 3.91 | 3/4 | 80S | 2.23 |
| 33.40 | 2.77 | 1 | 10S | 2.13 |
| 33.40 | 3.38 | 1 | 40S | 2.54 |
| 33.40 | 4.55 | 1 | 80S | 3.29 |
| 33.40 | 6.352) | 1 | 160 | 4.30 |
| 42.16 | 2.77 | 1¼ | 10S | 2.73 |
| 42.16 | 3.56 | 1¼ | 40S | 3.44 |
| 42.16 | 4.85 | 1¼ | 80S | 4.53 |
| 42.16 | 6.352) | 1¼ | 160 | 5.69 |
| 48.26 | 2.77 | 1½ | 10S | 3.16 |
| 48.26 | 3.68 | 1½ | 40S | 4.11 |
| 48.26 | 5.08 | 1½ | 80S | 5.49 |
| 60.33 | 2.77 | 2 | 10S | 3.99 |
| 60.33 | 3.91 | 2 | 40S | 5.52 |
| 60.33 | 5.54 | 2 | 80S | 7.60 |
| 60.33 | 8.742) | 2 | 160 | 11.29 |
| 73.03 | 3.05 | 2½ | 10S | 5.35 |
| 73.03 | 5.16 | 2½ | 40S | 8.77 |
| 73.03 | 7.01 | 2½ | 80S | 11.59 |
| 88.90 | 3.05 | 3 | 10S | 6.56 |
| 88.90 | 5.49 | 3 | 40S | 11.47 |
| 88.90 | 7.62 | 3 | 80S | 15.51 |
| 88.90 | 11.132) | 3 | 160 | 21.67 |
| 101.60 | 3.05 | 3½ | 10S | 7.53 |
| 101.60 | 5.74 | 3½ | 40S | 13.78 |
| 101.60 | 8.08 | 3½ | 80S | 18.92 |
| 114.30 | 3.05 | 4 | 10S | 8.50 |
| 114.30 | 6.02 | 4 | 40S | 16.32 |
| 114.30 | 8.56 | 4 | 80S | 22.67 |
| 114.30 | 13.492) | 4 | 160 | 34.05 |
| 141.30 | 6.55 | 5 | 40S | 22.10 |
| 141.30 | 9.53 | 5 | 80S | 31.44 |
| 141.30 | 15.882) | 5 | 160 | 49.87 |
| 168.28 | 3.4 | 6 | 10S | 14.04 |
| 168.28 | 7.11 | 6 | 40S | 28.69 |
| 168.28 | 10.97 | 6 | 80S | 43.21 |
| 168.28 | 14.27 | 6 | 120 | 54.75 |
| 168.28 | 18.262) | 6 | 160 | 68.59 |
| 219.08 | 8.18 | 8 | 40S | 43.20 |
| 219.08 | 12.7 | 8 | 80S | 65.63 |
| 219.08 | 18.23 | 8 | 120 | 91.30 |
| 219.08 | 23.012) | 8 | 160 | 112.97 |
Super Duplex Pipe Weight Chart
| NPS | OD | WT | Weight | Weight | |||
| mm | in | mm | in | Sched | Lb/ft | kg/Mtr | |
| 1″ | 33 | 1.315 | 3.378 | 0.133 | 40 STD | 1.679 | 2.501 |
| 4.547 | 0.179 | 80 STD | 2.172 | 3.325 | |||
| 3/4″ | 27 | 1.050 | 2.870 | 0.113 | 40 STD | 1.131 | 1.684 |
| 3.912 | 0.154 | 80 STD | 1.474 | 2.195 | |||
| 1 1/4″ | 42 | 1.660 | 3.556 | 0.140 | 40 STD | 2.273 | 3.385 |
| 4.851 | 0.191 | 80 STD | 2.997 | 4.464 | |||
| 2″ | 60 | 2.375 | 3.912 | 0.154 | 40 STD | 3.653 | 5.441 |
| 5.537 | 0.218 | 80 STD | 5.022 | 7.480 | |||
| 1 1/2″ | 48 | 1.900 | 3.683 | 0.145 | 40 STD | 2.718 | 4.048 |
| 5.080 | 0.200 | 80 STD | 3.361 | 5.409 | |||
| 1/2″ | 21 | 0.840 | 2.769 | 0.109 | 40 STD | 0.851 | 1.268 |
| 3.734 | 0.147 | 80 STD | 1.088 | 1.621 | |||
| 2 1/2″ | 73 | 2.875 | 5.516 | 0.203 | 40 STD | 5.793 | 8.629 |
| 7.010 | 0.276 | 80 STD | 7.661 | 11.411 | |||
| 4″ | 114 | 4.500 | 6.020 | 0.237 | 10.790 | 16.073 | |
| 8.560 | 0.337 | 14.983 | 22.318 | ||||
| 3″ | 89 | 3.500 | 5.486 | 0.216 | 40 STD | 7.576 | 11.284 |
| 7.620 | 0.300 | 80 STD | 10.253 | 15.272 | |||
| 6″ | 168 | 6.625 | 4.775 | 0.188 | 12.924 | 19.252 | |
| 5.563 | 0.219 | 14.983 | 22.318 | ||||
| 5.516 | 0.203 | 13.923 | 20.739 | ||||
| 6.350 | 0.250 | 17.021 | 25.354 | ||||
| 7.925 | 0.312 | 21.036 | 31.334 | ||||
| 7.112 | 0.280 | 40 STD | 18.974 | 58.263 | |||
| 9.525 | 0.375 | 25.031 | 37.285 | ||||
| 12.700 | 0.500 | 32.708 | 48.719 | ||||
| 10.973 | 0.432 | 80 XHY | 28.573 | 42.561 | |||
Super Duplex Pipes & Tubes Applications
Super Duplex Steel Pipe Price
The price of super duplex steel pipes depends on several factors, including grade (such as S32750 or S32760), pipe type (seamless or welded), size, schedule, wall thickness, quantity, and testing requirements. Due to their higher alloy content and superior mechanical and corrosion-resistant properties, super duplex pipes are priced higher than standard duplex stainless steel pipes.
Super Duplex Steel Pipe Price List
| Pipe Type | Size Range | Schedule / Wall Thickness | Approximate Price Range* |
| Super Duplex Seamless Pipe | 1/8″ – 24″ NB | SCH 10s to SCH XXS | ₹ 850 – 1,300 per kg |
| Super Duplex Welded Pipe | 1/2″ – 48″ NB | SCH 5s to SCH 40s | ₹ 700 – 1,050 per kg |
| Super Duplex ERW Pipe | 1/2″ – 24″ NB | SCH 10s to SCH 40s | ₹ 720 – 1,100 per kg |
| Super Duplex EFW Pipe | 6″ – 100″ NB | As required | ₹ 750 – 1,150 per kg |
| Super Duplex Tubes | 6 mm – 114.3 mm OD | 0.5 mm – 12 mm | ₹ 680 – 1,000 per kg |
Note: Prices are indicative and may vary depending on grade (S32750 / S32760), size, schedule, testing requirements, quantity, and prevailing raw material costs. For accurate and updated super duplex pipe price details, please contact us to request a project-specific quotation.
Testing of Super Duplex Stainless Steel Round Pipes
To achieve quality, dependability, and adherence to international standards, the super duplex stainless steel round pipes are tested stringently, and they include:
- Hardness Test: Confirms the hardness and consistency of the material.
- Mechanical Test (Tensile and Elongation): Verifies the strength, yield, and ductility characteristics.
- Intergranular Corrosion (IGC) Test: The test is used to check resistance to corrosion across grain boundaries.
- Positive Material Identification (PMI) Test: Enhances the accuracy of chemical composition and grade.
- Chemical Analysis (Spectro Analysis): Measures the alloying elements accurately.
- Micro and Macro Examination- Inspections the internal structure and identifies defects.
- Flattening Test: Verifies the integrity of a pipe, and the quality of a weld compression.
- Flaring Test: Tests ductility and formability of the pipe.
- Pitting Test: Is used to establish the resistance to localized corrosion under chloride conditions.
The tests guarantee that the super duplex steel pipes can achieve demanding industrial performance and safety
Frequently Asked Questions About Super Duplex Pipes & Tubes
What is a Super Duplex Steel Pipe?
In Which Applications do Super Duplex Pipes Find?
What Grades of Super Duplex Steel Pipes Can be found?
What Is the Range of Wall Thickness of Welded Tubes Supers of Duplex?
Are Super Duplex Seamless Pipes Heat treatable?
What is the critical crevice temperature of super duplex stainless steel pipes?
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